mergeto costamere date November 2009 The dystrophin associated proteincomplex is a multiprotein complex that includes dystrophin and the dystrophin associated protein s. ref MeshName Dystrophin Associated ProteinComplex ref Many forms of muscular dystrophy are associated with disorders of the dystrophin associated proteincomplex. ref name pmid12082140 cite journal author Ehmsen J, Poon E, Davies K title The dystrophin associated proteincomplex journal J. Cell. Sci. volume 115 issue Pt 14 pages 2801 3 year 2002 month July pmid 12082140 doi url http jcs.biologists.org cgi pmidlookup?view long&pmid 12082140 ref References reflist See also Costamere Muscle tissue Category Protein complexes biochem stub ... more details
HAMLET complex, human Chemotherapeutic agents Category Protein complexes Category Experimental cancer ...HAMLET Human Alpha lactalbumin Made LEthal to Tumor cells is a complex between alpha lactalbumin and oleic acid that induces apoptosis in tumor cells, but not in healthy cells. HAMLET is a novel chemotherapeutic agent with potent tumoricidal properties. Alpha lactalbumin is the primary protein component of human milk. In a 1995 study, it was noted that multimeric alpha lactalbumin MAL , a compound isolated from a fraction of human milk called casein , induced what appeared to be apoptosis in human lung carcinoma cells, pneumococcus bacteria, and other pathogens, while leaving healthy, differentiated cells unaffected. ref name pmid7644538 cite journal author H kansson A, Zhivotovsky B, Orrenius S, Sabharwal H, Svanborg C title Apoptosis induced by a human milk protein journal Proc. Natl. Acad. Sci. U.S.A. volume 92 issue 17 pages 8064 8 year 1995 month August pmid 7644538 pmc 41287 doi 10.1073 pnas.92.17.8064 ref The active component responsible for the tumoricidal activity was finally elucidated in 2000 and found to be a complex of alpha lactalbumin and oleic acid . ref name pmid10760289 ... lactalbumin to a protein inducing apoptosis journal Proc. Natl. Acad. Sci. U.S.A. volume 97 ... of HAMLET. Mechanism of action The HAMLET protein has been described as the Hydra of ancient ... more protein than healthy, differentiated cells. The mechanism of its entry is poorly understood, but recent studies indicate that the oleic acid in the HAMLET complex interacts with phosphatidylserine ... proteasomes are activated in response to large quantities of unfolded HAMLET protein in the cytoplasm ... its enzymatic activity, an effect that has never before been demonstrated for any protein. However, proteasome ... author Mok KH, Pettersson J, Orrenius S, Svanborg C title HAMLET, protein folding, and tumor cell ... of an infant is an acidic environment, which serves to induce protein unfolding. Human breastmilk ... more details
protein Name nuclear cap binding proteincomplex caption Crystal structure of the human nuclear cap binding complex. ref name pmid11545740 PDB 1H6K cite journal author Mazza C, Ohno M, Segref A, Mattaj IW, Cusack S title Crystal structure of the human nuclear cap binding complex journal Mol. Cell volume 8 issue 2 pages 383 96 year 2001 month August pmid 11545740 doi 10.1016 S1097 2765 01 00299 4 url ref image 1H6K.pdb.jpg width HGNCid 7658 Symbol NCBP1 AltSymbols NCBP EntrezGene 4686 OMIM RefSeq NM 002486 UniProt PDB ECnumber Chromosome 9 Arm q Band 34.1 LocusSupplementaryData protein Name Nuclear cap binding protein subunit 2, 20kDa caption image width HGNCid 7659 Symbol NCBP2 AltSymbols EntrezGene 22916 OMIM 605133 RefSeq NM 007362 UniProt P52298 PDB ECnumber Chromosome 3 Arm q Band 29 LocusSupplementaryData Nuclear cap binding proteincomplex is a RNA binding protein which binds to the 5 cap of RNA polymerase II . The cap and nuclear cap binding protein have many function in mRNA biogenesis including splicing, 3 end formation by stabilizing the interaction of the 3 end processing machinery, nuclear export and protection of the transcripts from nuclease degradation. ref name pmid19864257 ... cap binding proteincomplex in alternative splicing in Arabidopsis thaliana journal Nucleic Acids ... nar gkp869 url ref When RNA is exported to the cytoplasm the nuclear cap binding proteincomplex is replaced by cytoplasmic cap binding complex. The nuclear cap binding complex is a functional heterodimer ... cap binding proteincomplex shows the large subunit, CBC80 consists of 757 amino acid residues. Its ... complex journal EMBO J. volume 21 issue 20 pages 5548 57 year 2002 month October pmid 12374755 pmc 129070 doi ref References Reflist External links MeshName nuclear cap binding proteincomplex biochem ... four percent of beta sheet in the strand. ref name pmid11545740 Human nuclear cap binding proteincomplex plays important role in the maturation of pre messenger RNA mRNA and uracil rich small ... more details
PBB geneid 160 AP 2 complex subunit alpha 1 is a protein that in humans is encoded by the AP2A1 gene . ref name pmid2564002 cite journal author Robinson MS title Cloning of cDNAs encoding two related 100 kD coated vesicle proteins alpha adaptins journal J Cell Biol volume 108 issue 3 pages 833 42 year ... not been determined. ref name entrez cite web title Entrez Gene AP2A1 adaptor related proteincomplex ... 160 accessdate ref Interactions Adaptor related proteincomplex 2, alpha 1 has been shown to Proteinprotein interaction interact with DPYSL2 ref name pmid12942088 cite journal last Nishimura first ... maintained by Protein Box Bot. See Template PBB Controls to Stop updates. PBB Summary section title summary text This gene encodes the alpha 1 adaptin subunit of the adaptor protein 2 AP2 adaptors complex found in clathrin coated vesicles. The AP 2 complex is a heterotetramer consisting of two large adaptins alpha or beta , a medium adaptin mu , and a small adaptin sigma . The complex is part of the protein coat on the cytoplasmic face of coated vesicles which links clathrin to receptors ... Interaction of Shc with adaptor protein adaptins. journal J. Biol. Chem. volume 271 issue 9 pages ... of the Eps 15 protein. journal J. Biol. Chem. volume 271 issue 20 pages 12111 6 year 1996 pmid 8662627 ... Association and colocalization of Eps15 with adaptor protein 2 and clathrin. journal J. Cell Biol ... is an EH domain binding protein implicated in clathrin mediated endocytosis. journal Nature volume ... Clathrin assembly lymphoid myeloid leukemia CALM protein localization in endocytic coated pits, interactions ... sequencing and analysis of 500 novel complete protein coding human cDNAs. journal Genome Res. volume ..., et al. title PACS 1 binding to adaptors is required for acidic cluster motif mediated protein traffic ... Controls template provides controls for Protein Box Bot, please see Template PBB Controls for details. PBB Controls update page yes require manual inspection no update protein box yes update summary ... more details
antibodies against the protein or proteincomplex of interest. References reflist Category Proteins ...Pfam box Symbol SpA Name Protein A image Protein A 1DEE 1L6X.png width caption Structure of a domain of protein A as a three helix bundle binding to the heavy variable chain of a VH3 human Fab ref name ... JB, Silverman GJ. title Crystal structure of a Staphylococcus aureus protein A domain complexed with the Fab ... month May pmid 10805799 doi pmc 25840 ref left. Minimized protein A bound to Fc fragment of Rituximab ... April pmid 10754313 doi ref Pfam InterPro SMART PROSITE SCOP 1DEE TCDB OPM family OPM protein PDB PDB2 1dee , PDB2 1l6x Protein A is a 56 Atomic mass unit kDa MSCRAMM surface protein originally found ... and phagocytosis . Protein A antibody binding Protein A binds with high affinity to human IgG1 and IgG2 as well as mouse IgG2a and IgG2b. Protein A binds with moderate affinity to human IgM ... or IgD , nor will it react to mouse IgM, IgA or IgE. The capacity of protein A to bind antibodies with such high .... The protein A used for production of antibodies in bio pharmaceuticals is most commonly bound to a stationary phase chromatography resin. Other antibody binding proteins In addition to Protein A, other immunoglobulin binding bacterial proteins such as Protein G , Protein A G and Protein L are all ... Staphylococcus aureus utilizes Protein A, along with a host of other proteins and surface factors to aid its survival and, thus, virulence. Protein A helps inhibit phagocytic engulfment and acts as an immunological disguise. Mutants of S. aureus lacking protein A are more efficiently phagocytosed ... toxin. J. Exp. Med. 2003 197 1125 1139. ref Research Recombinant Staphylococcal Protein ... form of Protein A is called MabSelect. ref http www.gelifesciences.com aptrix upp00919.nsf Content 17D93C2E6A580E57C1257628001CE677 file 18114994AE.pdf ref Protein A is often coupled to other molecules .... Protein A is often immobilized onto a solid support and used as reliable method for purifying ... more details
PBB geneid 5627 Protein S is a vitamin K dependent plasma glycoprotein synthesized in the endothelium. In the circulation, Protein S exists in two forms a free form and a complex form bound to complement system complement protein C4b binding protein C4BP . In humans, protein S is encoded by the PROS1 ... B, Stenflo J, Wydro R title Isolation and sequence of the cDNA for human protein S, a regulator ... url ref In 1979, researchers in Seattle , Washington first discovered protein S and arbitrarily ... X Stuart factor , and protein S journal Biochemistry volume 16 issue 4 pages 698 706 year 1977 ... RG, Davie EW title Characterization of protein S, a gamma carboxyglutamic acid containing protein ... March pmid 420821 doi 10.1021 bi00572a026 ref Function The best characterized function of Protein S is its role in the anti coagulation pathway, where it functions as a cofactor to Protein C in the inactivation .... ref name pmid18695379 cite journal author Castoldi E, Hackeng TM title Regulation of coagulation by protein ... 18695379 doi 10.1097 MOH.0b013e328309ec97 url ref Protein S can bind to negatively charged phospholipids via the carboxylated Gla domain GLA domain . This property allows Protein S to function in the removal ... such as macrophages . Protein S can bind to the negatively charged phospholipids and function as a bridging molecule between the apoptotic cell and the phagocyte. The bridging property of Protein ... lead to Protein S deficiency which is a rare blood disorder which can lead to an increased risk of thrombosis ... R, Daly ME title The prevalence of, and molecular defects underlying, inherited protein S deficiency ... author Garc a de Frutos P, Fuentes Prior P, Hurtado B, Sala N title Molecular basis of protein S deficiency ... doi url ref Interactions Protein S has been shown to Proteinprotein interaction interact with Factor ... 621 635 of protein S are essential for binding to factor Va journal J. Biol. Chem. volume 274 issue ... Feb. title Binding of protein S to factor Va associated with inhibition of prothrombinase that is independent ... more details
to form stable proteincomplex es. Like other biological macromolecules such as polysaccharide ... subunit s in this context, which function as a single proteincomplex . Proteins are not entirely rigid ... of large proteincomplex es that carry out many closely related reactions with a common biological ...About a class of molecules protein as a nutrient Protein nutrient other uses pp semi indef File Myoglobin.png thumb right A representation of the 3D structure of the protein myoglobin showing colored alpha helix alpha helices . This protein was the first to have its structure solved by X ray crystallography ... folded into a globular protein globular or fibrous protein fibrous form, facilitating a biological ... . The peptide sequence sequence of amino acids in a protein is defined by the DNA sequence sequence ... archaea pyrrolysine . Shortly after or even during synthesis, the residues in a protein are often ... acid s from food. Through the process of digestion , animals break down ingested protein into free amino acids that are then used in metabolism. Proteins may be protein purification purified from ... made possible a number of methods to facilitate purification. Methods commonly used to study protein ... chains in a protein that ultimately determines its three dimensional structure and its chemical reactivity ... linked in the protein chain, an individual amino acid is called a residue, and the linked series of carbon, nitrogen, and oxygen atoms are known as the main chain or protein backbone. ref Murray ... structures of the peptide bond that links individual amino acids to form a protein polymer The peptide ... angle s in the peptide bond determine the local shape assumed by the protein backbone. ref Murray et al ., p. 31. ref The end of the protein with a free carboxyl group is known as the C terminus .... The words protein , polypeptide, and peptide are a little ambiguous and can overlap in meaning. Protein is generally used to refer to the complete biological molecule in a stable tertiary structure ... more details
The Complex may refer to The Complex An Insider Exposes the Covert World of the Church of Scientology , 2008 book by John Duignan The Complex How the Military Invades Our Everyday Lives , 2008 book by Nick Turse The Complex album The Complex album , by Blue Man Group The Complex Valdosta, Georgia , a multi purpose arena See also Complex disambiguation disambig ... more details
wiktionary complex complexes A complex is a whole that comprehends a number of intricate parts, especially one with interconnected or mutually related parts for example, a complex of building s . Complex may refer to tocright Biology Multiprotein complex , a group of two or more associated polypeptide chains Complex taxonomy , in biology, a cluster of species so closely related that they intergrade ... complex , a complex system of organisms and dependencies involved in a case of mimicry Chemistry Coordination complex , also called a coordination compound or metal complex , a structure consisting ... complex , a coordination complex with more than one bond Mathematics Complex number , an extension of real numbers obtained by adjoining imaginary numbers Complex system , a system of interconnected simple ... order behavior Complex analysis , the study of functions of complex numbers An element of a complex algebra or field of sets Chain complex , a possibly long sequence of maps Simplicial complex , a kind ... CW complex , or closure finite weak complex, a kind of topological space, a generalization of the simplicial complex Line complex , a 3 dimensional family of lines in space Other scientific uses Complex psychology , a group of mental factors that are unconsciously associated by the individual with a particular subject and influence the individual s attitude and behavior Synonym for a complex system which generally includes all interactions between elements Complex crater , a type of large impact crater morphology As a name Complex artist , an American Rap artist Complex band , a Japanese rock band Complex magazine Complex magazine , a young men s style lifestyle magazine CoMPLEX ucl is an interdisciplinary centre at University College London into biology and biomedicine Complex song Complex song , a song by British musician Gary Numan See also The Complex disambiguation Complexity Complexity disambiguation Complexity theory disambiguation Theory of complex systems The Military ... more details
A binding protein is any protein that acts as an agent to Molecular binding bind two or more molecules together. Examples include DNA binding protein Single strand binding protein Telomere binding protein RNA binding protein Poly A binding protein Nuclear cap binding proteincomplex CREB binding protein Calcium binding protein Calcium binding protein 1 S100 calcium binding protein A1 TATA binding protein Actin binding protein Penicillin binding proteins Retinol binding protein Retinol binding protein 4 EP300 Binding immunoglobulin protein Odorant binding protein Lipopolysaccharide binding protein C4b binding protein Rap GTP binding protein Calmodulin binding proteins Iron binding proteins Thyroxine binding proteins Folate binding protein Sterol regulatory element binding protein GTP binding protein Retinaldehyde binding protein 1 Ccaat enhancer binding proteins Androgen binding protein Maltose binding protein Phosphatidylethanolamine binding protein 1 Syntaxin binding protein 3 Insulin like growth factor binding protein Methyl CpG binding domain protein 2 Growth hormone binding protein Vitamin D binding protein Syntaxin binding protein 2 Oxysterol binding protein E3 binding protein Iron responsive element binding protein Polypyrimidine tract binding protein Fatty acid binding protein Myosin binding protein C, cardiac CPE binding protein Category Proteins biochem stub ... more details
Dodecameric is a term pertaining to protein quaternary structure , and describes a proteincomplex with 12 protein subunits protein chain s . Dodecameric complexes can have a number of Protein subunit subunit topology topologies , but typically only a few of the theory theoretically possible subunit arrangement s are observed in protein structure s. A dodecamer is a proteincomplex with 12 protein subunits. A common Protein subunit subunit arrangement involves a tetrahedral distribution of subunit protein trimer trimer s or 3 4 Point groups in three dimensions point symmetry . Another observed arrangement of Protein subunit subunits puts two rings of six subunits side by side along the six fold axis or 2 6 point symmetry . Dodecameric proteins include Complete gap junction channel, composed of two hexamers. glutamine synthetase PDB code http www.pdbe.org 2gls 2gls Dodecameric ferritin PDB code http www.pdbe.org 1qgh 1qgh A 42 Amyloid beta 42 References Protein Data Bank The Protein Data Bank PDB http www.pdbe.org pisa Protein Interfaces, Surfaces and Assemblies Server PISA part of the http www.pdbe.org PDBe . Category Protein structure biochem stub ... more details
The MRX complex is a heterotrimeric proteincomplex consisting of MRE11A Mre11 , Rad50 , and Xrs2 . It is a budding yeast homolog of the mammalian Mre11 Rad50 Nbs1 Mre11 Rad50 Nbs1 MRN DNA damage repair complex. protein stub Category Protein complexes ko MRX ... more details
Unreferenced date December 2009 File 1axc tricolor.png thumb right Assembled human Proliferating Cell Nuclear Antigen PCNA PDB PDBe 1AXC , a sliding DNA clamp protein that is part of the DNA replication complex and serves as a processivity factor for DNA polymerase. The three individual polypeptide chains that make up the trimer are shown. In biochemistry , a trimer is a macromolecular Complex chemistry complex formed by three, usually covalent bond non covalently bound , macromolecule s like protein s or nucleic acid s. A homo trimer would be formed by three identical molecule s. A hetero trimer would be formed by three different macromolecules. Collagen is an example of homo trimeric protein. See also Protein quaternary structure DEFAULTSORT Protein Trimer Category Proteins Biochem stub sr Proteinski trimer ... more details
M, Mann M, Seraphin B 1999 A generic protein purification method for proteincomplex characterization ... last6 S raphin first6 B title A generic protein purification method for proteincomplex characterization ... such as BioGRID and STRING . See also Interactomics Systems biology Complex systems biology Proteinprotein interaction prediction Proteinprotein interaction screening Multiprotein complex Types ... forms a proteinprotein interaction with the ribonuclease protein. The contacts between the two proteins are shown as coloured patches. 250px Proteinprotein interactions occur when two or more protein s bind together, often to carry out their function biology biological function . Many ... molecular machines that are built from a large number of protein components organised by their proteinprotein interactions. Protein interactions have been studied from the perspectives of biochemistry ... or genetic epigenetic graph theory networks . Indeed, proteinprotein interactions are at the core ... cell are mediated to the inside of that cell by proteinprotein interactions of the signaling molecules ... and in many diseases e.g. cancer s . Proteins might interact for a long time to form part of a proteincomplex , a protein may be carrying another protein for example, from cytoplasm to cell nucleus nucleus or vice versa in the case of the nuclear pore importins , or a protein may interact briefly with another protein just to modify it for example, a protein kinase will add a phosphate to a target protein . This modification of proteins can itself change proteinprotein interactions. For example ..., proteinprotein interactions are of central importance for virtually every process in a living cell ... for new therapeutic approaches. Methods to investigate proteinprotein interactions Main Methods to investigate proteinprotein interactions As proteinprotein interactions are so important there are a multitude ... such as yeast two hybrid screening can be used to detect novel proteinprotein interactions. Visualization ... more details
Protein crops are crop s that provide substantial protein , a large class of naturally occurring complex combinations of amino acid s. Such crops, including various oilseed s and grain s, are important in meeting the nutrient requirements of farm animal s. EU Common Agricultural Policy designates certain protein crops as eligible for support, such as pea s, field bean s, and sweet lupin s. References CRS article Report for Congress Agriculture A Glossary of Terms, Programs, and Laws, 2005 Edition url http ncseonline.org nle crsreports 05jun 97 905.pdf author Jasper Womach Category Crops ... more details
Infobox protein family Symbol ATP synt 10 Name ATP10 protein image width caption Pfam PF05176 Pfam clan InterPro IPR007849 SMART PROSITE MEROPS SCOP TCDB OPM family OPM protein CAZy CDD In molecular biology, ATP10 protein mitochondrial ATPase complex subunit ATP10 is an ATP synthase assembly factor. It is essential for the assembly of the mitochondrion mitochondrial F sub 1 sub F sub 0 sub Proteincomplexcomplex . A Saccharomyces cerevisiae yeast cell nucleus nuclear gene ATP10 encodes a product that is essential for the assembly of a functional mitochondrial ATPase complex. Mutations in ATP10 induce a loss of rutamycin sensitivity in the mitochondria mitochondrial ATPase, but do not affect the respiratory enzyme s. ATP10 has a molecular weight of 30,293 Dalton unit Da and its primary structure is not related to any known subunit of the yeast or mammalia mammalian mitochondrial ATPase complexes. ATP10 is associated with the mitochondrial membrane . It is suggested that the ATP10 product is not a subunit of the ATPase complex but rather a protein required for the assembly of the F sub 0 sub sector of the complex. ref name pmid2141026 cite journal author Ackerman SH, Tzagoloff A title ATP10, a yeast nuclear gene required for the assembly of the mitochondrial F sub 1 sub F sub 0 sub complex journal J. Biol. Chem. volume 265 issue 17 pages 9952 9 year 1990 month June pmid 2141026 doi url ref References reflist InterPro content IPR007849 Category Protein families ... more details
proteinprotein interaction s is important for the investigation of intracellular signaling pathways, modelling of proteincomplex structures and for gaining insights into various biochemical ... complex modelling This method ref Aloy ref Chen ref Fukuhara ref Kittichotirat makes use of known proteincomplex structures to predict as well as structurally model interactions between query protein ... to search for proteincomplex structures that are homologous to the query sequences. These known ... is limited to a relatively small number of known proteincomplex structures. Supervised learning problem ... protein pairs and interacting sites by homology modeling of complex structures Nucleic Acids Research ... to predict complexproteinprotein interaction s. Understanding the functional interaction s of proteins ...Proteinprotein interaction prediction is a field combining bioinformatics and structural biology in an attempt ... of experimental techniques, including yeast two hybrid screening two hybrid systems, protein fragment complementation assays PCA , affinity purification mass spectrometry , protein microarray s, fluorescence ... in other organisms. In addition, a number of bound protein complexes have been structurally solved ... pairs of protein families with similar patterns of presence or absence across large numbers of species ... imply physical interaction. Prediction of co evolved protein pairs based on similar phylogenetic ... protein in the hypothesized interacting pair. If the matrices are sufficiently similar as measured ... the two sequences have homologues which form a complex in a database of known structures of complexes ... using BLAST . If more than one complex of Pfam domains is identified, then the query sequences are aligned ... complex are conserved in the alignment. Identification of structural patterns This method ref Aytuna ref Ogmen builds a library of known proteinprotein interfaces from the Protein Data Bank PDB , where ... a known structure i.e. present in the Protein Data Bank PDB . Bayesian network modelling Bayesian ... more details
by the structures of the isomerase domain s of some of its members. A protein family is a group of evolution arily related protein s, and is often nearly synonymous with gene family . The term protein family should not be confused with Family biology family as it is used in taxonomy. Proteins ... protein structure three dimensional structures , functions, and significant sequence similarity ... tool for identifying the members of protein families. Currently, over 60,000 protein families have been defined, ref V.Kunin, I. Cases, A.J. Enrigh, V. de Lorenzo, C.A. Ouzounis, Myriads of protein families ... ambiguity in the definition of protein family leads different researchers to wildly varying numbers. Terminology and usage As with many biological terms, the use of protein family is somewhat context ..., Dayhoff introduced the concept of a protein superfamily. ref Dayhoff, M.O., Computer analysis of protein sequences, Fed. Proc. 33, 2314 2316, 1974. ref ref Dayhoff, M.O., McLaughlin, P.J., Barker, W.C., and Hunt, L.T., Evolution of sequences within protein superfamilies,Naturwissenschaften 62, 154 161, 1975. ref ref Dayhoff, M.O., The origin and evolution of protein superfamilies, Fed. Proc. 35, 2132 2138, 1976. ref Other terms such as protein class , protein group , and protein sub family ... these terms are being used in a particular context. Protein domains and motifs The concept of protein family was conceived at a time when very few protein structures or sequences were known at that time ... units or Protein domain domains . Due to evolutionary shuffling , different domains in a protein have evolved independently. This has led, in recent years, to a focus on families of protein domains ... at the end of this article . Regions of each protein have differing functional constraints features critical to the structure and function of the protein . For example, the active site of an enzyme ..., a proteinprotein binding interface may consist of a large surface with constraints on the hydrophobicity ... more details
File Galactose 1 phosphate uridylyltransferase 1GUP.png thumb right Cartoon diagram of a dimer of Escherichia coli galactose 1 phosphate uridylyltransferase GALT in complex with UDP galactose stick models . Potassium, zinc, and iron ions are visible as purple, gray, and bronze colored spheres respectively. In biochemistry , a dimer is a macromolecular Complex chemistry complex formed by two, usually covalent bond non covalently bound , macromolecule s like protein s or nucleic acid s. It is a Protein quaternary structure quaternary structure of a protein. A homo dimer would be formed by two identical molecule s process called homodimerization . A hetero dimer would be formed by two different macromolecules process called heterodimerization . Most dimers in biochemistry are not connected by covalent bond s with the exception of disulfide bridge s. An example of this would be the enzyme reverse transcriptase , which is made of two different amino acid chains. ref cite journal journal J. Med. Chem. year 2006 volume 49 issue 16 pages 4834 4841 doi 10.1021 jm0604575 title Structure Activity Relationships of 2 ,5 Bis O tert butyldimethylsilyl d ribofuranosyl 3 spiro 5 4 amino 1 ,2 oxathiole 2 ,2 dioxide thymine Derivatives as Inhibitors of HIV 1 Reverse Transcriptase Dimerization author Nicolas Sluis Cremer, Noureddine Hamamouch, Ana San F lix, Sonsoles Vel zquez, Jan Balzarini, and Mar a Jos Camarasa pmid 16884295 ref Some proteins contain specialized domains to ensure dimerization dimerization domains . Examples Antibody Antibodies Receptor tyrosine kinase s Transcription factor s Leucine zipper motif proteins Nuclear receptor s 14 3 3 protein s G protein coupled receptor s G protein subunit dimer Kinesin Triosephosphateisomerase TIM Alcohol dehydrogenase Factor XI Factor XIII Toll like receptor Fibrin ogen References reflist See also Dimer Protein trimer ProtCID DEFAULTSORT Protein dimer Category Proteins Category Dimers chemistry Biochem stub es D mero biolog a ... more details
10.1093 emboj 16.20.6095 url ref Ycf4 co fractionates with a proteincomplex larger than PSI upon sucrose density gradient centrifugation of solubilised thylakoids. ref name pmid9321389 The Ycf3 protein ... carbonate . This suggests that Ycf3 is not part of a stable complex and that it probably Proteinprotein interaction interact s transiently with its partners. ref name pmid11752384 cite journal ...Infobox protein family Symbol BtpA Name BtpA image width caption Pfam PF03437 Pfam clan CL0036 InterPro IPR005137 SMART PROSITE MEROPS SCOP TCDB OPM family OPM protein CAZy CDD In molecular biology, the BtpA protein family is a family of proteins which includes BtpA. BtpA appears to play a role in photosystem I stabilisation. ref name pmid10806238 cite journal author Zak E, Pakrasi HB title The BtpA protein stabilizes the reaction center proteins of photosystem I in the cyanobacterium Synechocystis sp. PCC 6803 at low temperature journal Plant Physiol. volume 123 issue 1 pages 215 22 year 2000 month May pmid 10806238 pmc 58995 doi 10.1104 pp.123.1.215 url ref It is an extrinsic membrane protein located on the cytoplasm cytoplasmic side of the thylakoid membrane . ref name pmid10103064 cite journal author Zak E, Norling B, Andersson B, Pakrasi HB title Subcellular localization of the BtpA protein in the cyanobacterium Synechocystis sp. PCC 6803 journal Eur. J. Biochem. volume 261 issue 1 pages 311 6 year 1999 month April pmid 10103064 doi 10.1046 j.1432 1327.1999.00281.x url ref ref name pmid10806238 Homology biology Homolog s of BtpA are found in the crenarchaeota and euryarchaeota , where their function remains unknown. The Ycf4 protein is firmly associated with the thylakoid membrane, presumably through a transmembrane domain . ref name pmid9321389 cite journal author Boudreau ... frames of Chlamydomonas reinhardtii are required for the accumulation of the photosystem I complex journal ... proteinprotein interaction s. References reflist InterPro content IPR005137 Category Protein families ... more details
InterPro IPR002208 SMART PROSITE PDOC00612 SCOP 1rh5 TCDB 3.A.5 OPM family 19 OPM protein 1rh5 PDB PDB3 1rh5 A 69 417 PDB3 1rhz A 69 417 The SecY protein is the main transmembrane subunit of the eubacterial Sec or Type II secretory pathway and a protein secreting ATPase complex, also known as a translocon ... a chaperone protein SecB , an ATPase SecA , an integral membrane complex SecY, SecE and SecG , and two ... I title Three dimensional structure of the bacterial protein translocation complex SecYEG journal ...Pfam box Symbol SecY Name eubacterial secY protein image PDB 1rh5 EBI.jpg width caption Structure of a protein ... I, et al. title X ray structure of a protein conducting channel journal Nature volume 427 ... targeted to the outer membrane, or remain as periplasmic proteins. The translocase protein subunits ... SecD and SecF ref name PUB00007064 . The chaperone protein SecB ref name PUB00007065 cite journal ... acidic homotetrameric protein that exists as a dimer of dimers in the bacterial cytoplasm. SecB maintains ... protein ATPase SecA for secretion ref name PUB00007066 cite journal author Muller JP title Effects of pre protein overexpression on SecB synthesis in Escherichia coli journal FEMS Microbiol. Lett. volume ... membrane is composed of dimers of SecYEG. The monomeric complex contains 15 transmembrane helices. The eubacterial secY protein ref name PUB00003823 cite journal doi 10.1111 j.1365 2958.1992.tb01417.x author Ito K title SecY and integral membrane components of the Escherichia coli protein translocation ... interacts with the signal sequences of secretory proteins as well as with two other components of the protein translocation system secA and secE. SecY is an integral plasma membrane protein of 419 to 492 ... domains may participate in protein export ref name PUB00003801 cite journal author Oliver DB, Suh ... evidence for a common protein export pathway in eubacteria journal Mol. Microbiol. volume 4 ... 92 80029 G ref where it could be involved in a prokaryotic like protein export system across the two ... more details
. One method of production involves isolation of a specific protein from a virus and administering this by itself ... vaccine , which involves putting a protein gene from the targeted virus into another virus. The second virus will express the protein, but will not present a risk to the patient. This is the type ... Allostery Cooperative binding Cooperativity References reflist Vaccines Category Protein structure cs Podjednotka de Protein Untereinheit es Subunidad proteica it Subunit ja ru ... more details
A secretory protein is any protein, whether it be endocrine or exocrine , which is secreted by a cell. Secretory proteins include many hormones , enzymes , toxins , and antimicrobial peptides . Secretory proteins are synthesized in endoplasmic reticulum. Production The production of a secretory protein starts like any other protein. The Messenger RNA mRNA is produced and transported to the cytosol where it interacts with a free cytosolic ribosome . The part that is produced first, the NH sub 3 sub ter, contains a signal sequence consisting of 6 to 12 amino acid s with hydrophobic side chains. This sequence is recognised by a cytosolic protein, SRP Signal Recognition Particle , which stops the Translation genetics translation and aids in the transport of the mRNA ribosome complex to a translocon in the Cell membrane membrane of the endoplasmic reticulum . When it arrives at the translocon , this channel protein opens and the signal sequence is introduced to the endoplasmic reticulum ER lumen through this opening. The signal sequence is removed and the translation continues while the produced chain moves through the translocon cotranslational translocation . Modification After the production of the protein is completed, it interacts with several other proteins to gain its final state. Endoplasmic Reticulum After translation proteins within the ER make sure that the protein is folded ... too the protein is exported to the cytosol and labelled for destruction. Aside from the folding, there is also a sugar chain added to the protein. After these changes, the protein is transported to the Golgi apparatus by a coated Vesicle biology and chemistry vesicle using coating protein ... certain sugars. The secretory protein leaves the Golgi apparatus by an uncoated vesicle. Excretion ... and so the protein leaves the cell. Some vesicles don t fuse immediately and await a signal before ... Cell biology Category Proteins Category Secretion protein stub ... more details
aided design has also been used to engineer complex properties of a highly ordered nano protein ...Protein engineering is the process of developing useful or valuable protein s. It is a young discipline, with much research taking place into the understanding of protein folding and protein recognition recognition for protein design principles. There are two general strategies for protein engineering ... will often apply both. In the future, more detailed knowledge of protein structure and Protein function ... greatly expand the capabilities of protein engineering. Eventually, even unnatural amino acids may ... acids in the genetic code. Rational design of proteins main Protein design In rational protein design, the scientist uses detailed knowledge of the structure and function of the protein to make desired ... knowledge of a protein is often unavailable, and even when it is available, it can be extremely difficult to predict the effects of various mutations. Computational protein design algorithms seek ... challenging requirement for computational protein design is a fast, yet accurate, energy function that can ... evolution In directed evolution, random mutagenesis is applied to a protein, and a selection regime ... advantage of directed evolution is that it requires no prior structural knowledge of a protein, nor ... for. Examples of engineered proteins Using computational methods, a protein with a novel fold has ... first6 David lastauthoramp yes year 2003 title Design of a Novel Globular Protein Fold with Atomic ... doi 10.1038 nature01556 pmid 12736688 bibcode 2003Natur.423..185L ref The engineering of fusion protein ... specificity journal Protein Science volume 18 issue 10 pages 2125 38 year 2009 month October ... Protein Redesign and Optimization IPRO redesigns proteins to increase or give specificity to native ... of this process allows IPRO to make additive mutations to the protein sequence that collectively ... cofactor specificity journal Protein Science volume 18 issue 10 pages 2125 38 year 2009 month October ... more details
Infobox protein family Symbol Adeno hexon Name Adeno hexon image PDB 1p2z EBI.jpg width caption refinement of adenovirus type 2 hexon with cns Pfam PF01065 Pfam clan InterPro IPR016107 SMART PROSITE MEROPS SCOP 1dhx TCDB OPM family OPM protein CAZy CDD Infobox protein family Symbol Adeno hexon C Name Adeno hexon C image PDB 2bvi EBI.jpg width caption the quasi atomic model of human adenovirus type 5 capsid part 2 Pfam PF03678 Pfam clan InterPro IPR016108 SMART PROSITE MEROPS SCOP 1dhx TCDB OPM family OPM protein CAZy CDD In molecular biology, the hexon protein is a major coat protein found in Adenoviruses . Hexon coat protein proteins are synthesised during late infection and form homo trimers. The 240 copies of the hexon Trimer biochemistry trimer that are produced are organised so that 12 lie on each of the 20 facets. The central 9 hexons in a facet are cemented together by 12 copies of polypeptide IX. The penton complex, formed by the peripentonal hexons and base hexon holding in place a fibre , lie at each of the 12 vertices. ref name pmid7932702 cite journal author Athappilly FK, Murali R, Rux JJ, Cai Z, Burnett RM title The refined crystal structure of hexon, the major coat protein of adenovirus type 2, at 2.9 A resolution journal J. Mol. Biol. volume 242 issue 4 pages 430 55 year 1994 month September pmid 7932702 doi 10.1006 jmbi.1994.1593 url ref The hexon coat protein is a duplication consisting of two protein domain domains with a similar protein folding fold packed together like the nucleoplasmin protein subunit subunits . Within a hexon trimer, the protein domains domains are arranged around a pseudo 6 fold axis. The Domain biology domain s have a beta sandwich secondary structure structure consisting of 8 strands in two beta sheet sheets with a jelly roll topology each domain is heavily decorated with many insertions. ref name pmid12915569 cite journal author ... IPR016107 Category Protein domains ... more details
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