Proteolysis is the partial breakdown of protein s into smaller polypeptides or the complete degradation into amino acids. This generally occurs by the hydrolysis of the peptide bond , and is most commonly achieved by cellular enzyme s called protease s but may also occur by intramolecular digestion, as well as by non enzymatic methods such as the action of mineral acids and heat. Proteolysis in organisms serves many purposes for example, digestive proteases break down proteins in food to provide amino acids for the organism, while proteolytic processing of polypeptide chain after its synthesis ... proteins in cells. Post translational proteolytic processing Limited proteolysis of a polypeptide ... to its final destination. This peptide is signal removed by proteolysis after their transport ... the active site of the protease, thereby activating the protein. Proteolysis can therefore .... Proteolysis in cellular regulation File Proteaosome 1fnt side.png thumb 150px right Structure of a proteasome ... are constantly being broken down by proteolysis into amino acids. This serves a number of functions ... X ref The rate of proteolysis may also depend on the physiological state of the cell, such as its ... synthesis. The degradation of protein may be achieved in two ways proteolysis in lysosome ... activation has occurred. Regulation in proteolysis Protease may have a regulatory domain ... clotting cascade, calpain . Kringle domain e.g. bind fibrin Proteolysis and diseases Abnormal proteolytic ... applications Proteolysis is also used in research and diagnostic applications In gel digestion ... cause proteolysis. These venoms are, in fact, complex digestive fluids that begin their work outside ... muscle destroying Hemorrhage hemorrhagic bleeding See also Proteolytic enzyme The Proteolysis ... In gel digestion References references External links eMedicineDictionary Proteolysis http www.proteolysis.org Proteolysis MAP from Center on Proteolytic Pathways Protein posttranslational modification ... more details
Image PMAP logoV8 2blue.png 100px thumb right PMAP logo The Proteolysis MAP PMAP is an integrated web resource focused on protease s. ref Igarashi Y, Heureux E, Doctor KS, Talwar P, Gramatikova S, Gramatikoff K, Zhang Y, Blinov M, Ibragimova SS, Boyd S, Ratnikov B, Cieplak P, Godzik A, Smith JW, Osterman AL, Eroshkin AM. PMAP databases for analyzing proteolytic events and pathways. Nucleic Acids Research . 2008 Oct 8. Epub ahead of print ref Rationale PMAP is to aid the protease researchers in reasoning about proteolytic neural network networks and metabolic pathways . History and funding PMAP was originally created at the Burnham Institute for Medical Research , La Jolla, California. In 2004 the National Institutes of Health NIH selected a team led by Jeffrey W. Smith , to establish the Center on Proteolytic Pathways CPP . As part of the NIH Roadmap for Biomedical research, the center develops technology to study the behavior of proteins and to disburse that knowledge to the scientific community at large. Focal point Proteases are a class of enzymes that regulate much of what happens in the human body , both inside the Cell biology cell and out, by cleaving peptide bonds in proteins . Through this activity, they govern the four essential cell functions differentiation cellular differentiation , motility , division and cell death and activate important extracellular episodes, such as the biochemical cascade effect in blood clotting . Simply stated, life could not exist without them. Extensive on line classification system for proteases also referred as peptidases is deposited in the MEROPS database. The goal Proteolytic pathways, or proteolysis, are the series of events controlled by proteases that occur in response to specific stimuli. In addition to the clotting of blood ... Proteolysis Cut Site database curated expert annotation from users http substrate.burnham.org Protease ... http www.protease.org International Proteolysis Society http merops.sanger.ac.uk Merops ... more details
Orphan date February 2009 Heavy meromyosin HMM is the larger of the two fragments obtained from the muscle protein myosin II following limited proteolysis by trypsin or chymotrypsin . HMM is used to determine the polarity of actin filaments by decorating them with HMM then viewing them under the electron microscope . References http www.answers.com topic heavy meromyosin?cat technology Category Motor proteins biochem stub ... more details
Protein metabolism denotes the various biochemistry biochemical processes responsible for the synthesis of protein synthesis proteins and amino acid synthesis amino acids , and the breakdown of proteins and other large molecules, too by protein catabolism catabolism . Protein synthesis Main article Protein biosynthesis . Protein biosynthesis relies on four processes amino acid synthesis RNA synthesis Transcription genetics transcription Translation genetics translation Protein anabolism is the process by which protein are formed from amino acids aka anabolic amino acid synthesis . Protein breakdown See Proteolysis Protein catabolism is the process by which proteins are broken down to their amino acids. This is also called proteolysis . This can be followed by further amino acid degradation . Metabolism DEFAULTSORT Protein Metabolism Category Metabolism Metabolism stub cs B lkovina Metabolismus b lkovin sr Proteinski metabolizam th ... more details
protein Name caspase 4, apoptosis related cysteine peptidase caption image width 240px HGNCid 1505 Symbol CASP4 AltSymbols ICE rel II, ICH 2, TX EntrezGene 837 OMIM 602664 RefSeq NM 001225 UniProt P49662 PDB ECnumber 3.4.22.57 Chromosome 11 Arm q Band 22.2 q22.3 LocusSupplementaryData Caspase 4 is an enzyme that proteolysis proteolytically cleaves other proteins at an aspartic acid residue, and belongs to a family of cysteine protease s called caspase s. The function of caspase 4 is not fully known, but it is believed to be an inflammatory caspase, along with caspase 1 , caspase 5 and the murine homology biology homolog caspase 11 , with a role in the immune system . ref cite journal author Martinon F, Tschopp J title Inflammatory caspases and inflammasomes master switches of inflammation journal Cell Death Differ. volume 14 issue 1 pages 10 22 year 2007 pmid 16977329 doi 10.1038 sj.cdd.4402038 ref See also The Proteolysis Map Caspase References references External links The MEROPS online database for peptidases and their inhibitors http merops.sanger.ac.uk cgi bin merops.cgi?id C14.007 C14.007 Cysteine proteases Category Enzymes Category Caspases gene 11 stub ... more details
protein Name caspase 5, apoptosis related cysteine peptidase caption image width 240px HGNCid 1506 Symbol CASP5 AltSymbols ICE rel III, ICH3 EntrezGene 838 OMIM 602665 RefSeq NM 004347 UniProt P51878 PDB ECnumber 3.4.22.58 Chromosome 11 Arm q Band 22.2 q22.3 LocusSupplementaryData Caspase 5 is an enzyme that proteolysis proteolytically cleaves other proteins at an aspartic acid residue, and belongs to a family of cysteine protease s called caspase s. It is an inflammatory caspase, along with caspase 1 , caspase 4 and the murine caspase 4 homology biology homolog caspase 11 , and has a role in the immune system . ref cite journal author Martinon F, Tschopp J title Inflammatory caspases and inflammasomes master switches of inflammation journal Cell Death Differ. volume 14 issue 1 pages 10 22 year 2007 pmid 16977329 doi 10.1038 sj.cdd.4402038 ref See also The Proteolysis Map Caspase References references External links The MEROPS online database for peptidases and their inhibitors http merops.sanger.ac.uk cgi bin merops.cgi?id C14.008 C14.008 Cysteine proteases Category Enzymes gene 11 stub ... more details
Jeffrey W. Smith is Director , Program for Excellence in Nanotechnology , Center on Proteolytic Pathways, ref Smith JW. Allostery and proteolysis two novel modes of regulating integrin function. Matrix Biol. 1997 Oct 16 4 173 8. Review. ref Tumor Microenvironment at of the Burnham Institute . Jeff earned his Ph.D. in biological sciences at UC Irvine in 1987. Following postdoctoral training at The Scripps Research Institute , he was appointed to their staff in 1991. Dr. Smith was recruited to The Burnham Institute in 1995. See also Nanotechnology The Proteolysis Map References reflist External links http www.burnham.org default.asp?contentID 205 Burnham Institute for Medical Research Jeffrey W. Smith Faculty page http www.ncbi.nlm.nih.gov sites entrez?db pubmed&cmd DetailsSearch&term smith jw and protease&log activity Jeffrey W. Smith, Selected list of publications via PubMed, NIH National Library of Medicine Persondata Metadata see Wikipedia Persondata . NAME Smith, Jeffrey W. ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH PLACE OF BIRTH DATE OF DEATH PLACE OF DEATH DEFAULTSORT Smith, Jeffrey W. Category The Scripps Research Institute Category Living people med bio stub ... more details
Infobox Cheese name Fynbo image othernames country Denmark region town source cow pasteurised yes texture semi hard fat 34 protein dimensions weight 2 kg aging certification Fynbo is a semi hard Denmark Danish cheese named after the island of Fyn . It has a flavor of buckwheat and is processed with a combination of mesophile mesophilic and thermophile thermophilic bacterial cultures. Experiments with secondary proteolysis of Fynbo have helped to identify an important peptide produced during cheese ripening, s1 casein f1 23 ref cite journal author Sihufe GA, Zorrilla SE, Rubiolo AC title Secondary proteolysis of Fynbo cheese salted with NaCl KCl brine and ripened at various temperatures journal Food Chemistry volume 96 issue 2 pages 297 303 year 2006 doi 10.1016 j.foodchem.2005.02.026 url http www.sciencedirect.com science? ob ArticleURL& udi B6T6R 4FW7R26 4& user 10& rdoc 1& fmt & orig search& sort d& docanchor &view c& searchStrId 1141689606& rerunOrigin google& acct C000050221& version 1& urlVersion 0& userid 10&md5 4d2d732f93a865373c69bc93985116dc ref . This cheese was mentioned in Monty Python s Cheese Shop sketch . References Reflist External links http www.epicurious.com tools fooddictionary entry?id 5043 Epicurious Food Dictionary Tybo cheese Danish cheeses Cheese stub Category Danish cheeses Category Cow s milk cheeses Category Foods named after places pl Fynbo ... more details
An exopeptidase is an enzyme produced in the pancreas that catalyst catalyses the removal of an amino acid from the end of a polypeptide chain. Exopeptidase cleaves the end of a polypeptide chain. Aminopeptidase , an enzyme in the brush border of the small intestine, will cleave a single amino acid from the aminoterminal. Carboxypeptidase , which is a digestive enzyme present in pancreatic juice, will cleave a single amino acid from the carboxylic end of the peptide. See also The Proteolysis Map Endopeptidase Edman degradation Dansyl chloride Protease External links MeshName Exopeptidases hydrolase stub Proteases Category Enzymes Category EC 3.4 de Exopeptidasen el fa it Esopeptidasi nl Exopeptidase pl Egzopeptydazy ru zh ... more details
Peptidyl glutamyl peptide hydrolyzing PGPH enzyme activity is a means of proteolysis that cleaves peptide bond s in protein s immediately after acid ic or branched chain amino acid s. One of the three catalysis catalytic Protein subunit subunit s of the proteasome has PGPH activity and is strongly inhibited by the proteasome inhibitor epoxomicin . ref name Meng Meng L, Mohan R, Kwok BHB, Elofsson M, Sin N, Crews CM. 1999 . Epoxomicin, a potent and selective proteasome inhibitor, exhibits in vivo antiinflammatory activity. Proc Natl Acad Sci USA 96 18 10403 10408. ref References references External links http db.yeastgenome.org cgi bin GO go.pl?goid 45024 Gene Ontology entry hydrolase stub Category Posttranslational modification Category Metabolism Category EC 3.4 ... more details
Multiple issues orphan February 2009 expert September 2009 context August 2009 unreferenced August 2009 Meromyosin mero meaning part of are subunits of the actin associated motor protein, myosin formed by trypsin digestion proteolysis . Following digestion, two types of meromyosin are formed heavy meromyosin HMM and light meromyosin LMM . Light meromyosin has a long, straight portion in the tail region. Heavy meromyosin is a protein chain terminating in a globular head portion cross bridge. HMM consists of two subunits, Heavy Meromyosin Subunit 1 and 2 HMMS 1 and HMMS 2 . The majority of myosin activity is concentrated in HMMS 1. HMMS 1 has an Actin binding site and Adenosine triphosphate ATP binding site myosin ATPase that determines the rate of muscle contraction when muscle is stretched. Category Motor proteins biochemistry stub ... more details
this page is a redirect basically to reversible or irreversible Post translational regulation refers to the Regulation of gene expression control of the levels of active protein. There are several forms. ref name Schumannnat. 2006 cite book author1 Wolfgang Schumann author2 Wolfgang Schumann Prof. Dr. rer. nat. title Dynamics of the bacterial chromosome structure and function url http books.google.com books?id pG7RgDra9lQC&pg PA266 accessdate 26 December 2010 year 2006 publisher Wiley VCH isbn 9783527304967 pages 266 ref It is performed either by means of reversible events Post translational modifications , such as Phosphorylation or sequestration or by means of irreversible events proteolysis . References reflist MolBioGeneExp Molecular Biology Category Gene expression Category Posttranslational modification fr R gulation post traductionnelle ... more details
Multiple issues unreferenced February 2009 expert subject February 2009 orphan February 2009 An antigenic determinant is the molecular aspect or moiety of a molecule that lets an antibody complement it and thus by definition, makes the molecule an antigen classified further, an immunogen within an organism . A Protein can underlie further modification within a biochemical pathway such as glycosylation, phosphorylation or proteolysis. This, by altering the structure of the protein, can produce new epitope s which are called neoantigenic determinants as they give rise to new lat. neo antigenic determinants and require separate, specific antibodies for recognition. References reflist Category Immune system molecular cell biology stub ... more details
A degron is a specific sequence of amino acids in a protein that directs the starting place of degradation. A degron sequence can occur at either the N or C terminal region, these are called N Degrons or C degrons respectively. A temperature sensitive degron takes advantage of the N end rule pathway, in which a destabilizing N terminal residue dramatically decreases the in vivo half life of a protein ref Dohmen, R.J., P. Wu, and A. Varshavsky, Heat inducible degron a method for constructing temperature sensitive mutants. Science, 1994. 263 5151 p. 1273 1276. ref . The degron is a fusion protein of ubiquitin , arginine , and DHFR . DHFR is dihydrofolate reductase, a mouse derived enzyme that functions in the synthesis of thymine. It is also heat labile at a higher temperature of 37 , becomes slightly unfolded and exposes an internal lysine , the site of poly ubiquitination. Proteolysis is highly processive, and the protein is degraded by the proteasome . The degron can be fused to a gene to produce the corresponding temperature sensitive protein. It is portable, and can be transferred on a plasmid. blockquote A ligand controllable degron takes advantage of a mutant form of FKBP12 protein that can be controlled using a synthetic ligand ref Schoeber JP, van de Graaf SF, Lee KP, Wittgen HG, Hoenderop JG, Bindels RJ,Conditional fast expression and function of multimeric TRPV5 channels using Shield 1.Am J Physiol Renal Physiol. 2009 Jan 296 1 F204 11 ref . Small molecule Shield1 binds specifically to the degron making it inactive. An inactive degron no longer promotes protein degradation. The degron is reactivated when the small molecule is removed by washing the cells and active protein degradation occurs through proteasome mediated proteolysis ref Chu BW, Banaszynski LA, Chen LC, Wandless TJ,Recent progress with FKBP derived destabilizing domains,Bioorg Med Chem Lett. 2008 Nov 15 18 22 5941 4 ref . blockquote References references See also N end rule Category Amino acid ... more details
Wiktionary hmm HMM may refer to Hammerton railway station , England, National Rail station code HMM. Heavy meromyosin , a fragment obtained from the muscle protein myosin II following limited proteolysis. Heavy metal music , a subgenre of rock music. Heroes of Might and Magic more often referred to as HoMM , a series of turn based strategy games by New World Computing. Hidden Markov model , a statistical model. Homenmen , an Armenian sporting organization. Hum sound , a sound one makes when thinking, e.g. Hmm, I wonder... Hyundai Merchant Marine , a South Korean logistics company. List of active United States Marine Corps aircraft squadrons Marine Medium Helicopter Squadrons Marine Medium Helicopter Squadrons , United States Marine Corps squadrons that fly the CH 46 Sea Knight helicopter. Disambiguation fa HMM ko HMM it HMM ja HMM ru HMM zh HMM ... more details
Infobox protein family Symbol Name Lactoferricin B image width caption Pfam Pfam clan InterPro SMART PROSITE MEROPS SCOP TCDB OPM family 161 OPM protein 1lfc CAZy CDD Lactoferricin is an amphipathic , cationic peptide with anti microbial ref Wakabayashi H, Takase M, Tomita M. http www.ingentaconnect.com content ben cpd 2003 00000009 00000016 art00005 Lactoferricin derived from milk protein lactoferrin. Curr Pharm Des. 2003 9 16 1277 87. ref and anti cancer ref Eliassen LT, Berge G, Sveinbjornsson B, Svendsen JS, Vorland LH, Rekdal O. http cat.inist.fr ?aModele afficheN&cpsidt 14397614 Evidence for a direct antitumor mechanism of action of Bovine lactoferricin . Anticancer Res. 2002 Sep Oct 22 5 2703 10. ref properties. It can be generated by the pepsin mediated Proteolysis digestion of lactoferrin . References references Category Biomolecules Category Peptides Lactoferricin biochem stub ... more details
Other uses Mowse disambiguation Mowse MOWSE for MOlecular Weight SEarch is a method for identification of protein s from the molecular weight of peptide s created by Proteolysis proteolytic digestion and measured with mass spectrometry . ref name pmid15335725 cite journal author Pappin DJ, Hojrup P, Bleasby AJ title Rapid identification of proteins by peptide mass fingerprinting journal Curr. Biol. volume 3 issue 6 pages 327 32 year 1993 month June pmid 15335725 doi 10.1016 0960 9822 93 90195 T url http linkinghub.elsevier.com retrieve pii 0960 9822 93 90195 T ref The MOWSE algorithm was developed by Darryl Pappin and David Perkins at the Imperial Cancer Research Fund , and licensed from Cancer Research Technology. The probability based MOWSE score formed the basis of development of mascot software Mascot , a proprietary software for protein identification from mass spectrometry data. It is documented http www.matrixscience.com help scoring help.html here See also Peptide mass fingerprinting Mascot software References Reflist Bioinformatics stub Category Bioinformatics Category Mass spectrometry software Category Proteomics ... more details
Endopeptidase or endoproteinase are Protease proteolytic peptidase s that break peptide bonds of nonterminal amino acid s i.e. within the molecule , in contrast to exopeptidase s, which break peptide bonds from their end pieces. For this reason, endopeptidases cannot break down peptides into monomers, while exopeptidases can break down proteins into monomers. A particular case of endopeptidase is the oligopeptidase , whose substrates are oligopeptides instead of proteins. They are usually very specific for certain amino acids. Examples of endopeptidases include Trypsin cuts after Arg or Lys, unless followed by Pro. Very strict. Works best at pH 8. Chymotrypsin cuts after Phe, Trp, or Tyr, unless followed by Pro. Cuts more slowly after Asn, His, Met or Leu. Works best at pH 8. Elastase cuts after Ala, Gly, Ser, or Val, unless followed by Pro. Thermolysin cuts before Ile, Met, Phe, Trp, Tyr, or Val, unless preceded by Pro. Sometimes cuts after Ala, Asp, His or Thr. Heat stable. Pepsin cuts before Leu, Phe, Trp or Tyr, unless preceded by Pro. Also others, quite nonspecific works best at pH 2. Endopeptidase V8 alias Glu C cuts after Glu. Works best at pH 8. References reflist External links MeshName Endopeptidases See also The Proteolysis Map Proteases Category EC 3.4 de Endopeptidasen el fa pl Endopeptydazy ru ... more details
Image Immunglobulin A as Dimer.png thumb right 180 px The protein dimer dimer ic IgA molecule. br 1 Immunoglobulin heavy chain H chain . br 2 Immunoglobulin light chain L chain . br 3 J chain . br 4 secretory component . The secretory component is a component of immunoglobulin A IgA which consists of a portion of the polymeric immunoglobulin receptor . Polymeric IgA binds to the polymeric immunoglobulin receptor on the basolateral surface of epithelial cells and is taken up into the cell via transcytosis . The receptor IgA complex passes through the cellular compartments before being secreted on the lumen anatomy luminal surface of the epithelial cells, still attached to the receptor. Proteolysis of the receptor occurs and the dimeric IgA molecule, along with the secretory component, are free to diffuse throughout the lumen. ref Cite journal author CS Kaetzel, JK Robinson, KR Chintalacharuvu, JP Vaerman, and ME Lamm title The polymeric immunoglobulin receptor secretory component mediates transport of immune complexes across epithelial cells a local defense function for IgA journal Proc Natl Acad Sci USA volume 88 issue 19 pages 8796 8800 year 1991 pmid 1924341 doi 10.1073 pnas.88.19.8796 pmc 52597 ref External links MeshName Secretory component References Reflist Category Antibodies Immunology stub pl Fragment wydzielniczy ... more details
Semenogelin is a protein that is involved in the formation of a gel matrix that encases ejaculated spermatozoa, preventing capacitation . ref name de Lamirande Cite journal author de Lamirande E, Lamothe G title Levels of semenogelin in human spermatozoa decrease during capacitation involvement of reactive oxygen species and zinc journal Hum Reprod volume 25 issue 7 pages 1619 1630 year 2010 month May pmid 20501468 doi 10.1093 humrep deq110 url ref It blocks capacitation mainly via inhibition of reactive oxygen species ROS generation. ref name de Lamirande Proteolysis by prostate specific antigen PSA breaks down the gel matrix and allows the spermatozoa to move more freely. ref http www.ncbi.nlm.nih.gov sites entrez?Db gene&Cmd ShowDetailView&TermToSearch 6407 Entrez Gene SEMG2 semenogelin II ref The cleavage products of the semenogelins constitute the main antibacterial components in human seminal plasma. ref cite journal last Edstr m first AM coauthors Malm, J, Frohm, B, Martellini, JA, Giwercman, A, M rgelin, M, Cole, AM, S rensen, OE title The major bactericidal activity of human seminal plasma is zinc dependent and derived from fragmentation of the semenogelins. journal Journal of immunology date Sep 1 year 2008 volume 181 issue 5 pages 3413 21 pmid 18714013 ref There are two variants of the semenogelin protein Semenogelin 1 and Semenogelin 2 . References Reflist Category Proteins Biochemistry stub ... more details
can also be generated by endopeptidases after precise and limited proteolysis, termed processing. Necessary ... in dramatic functional consequences. Aberrant proteolysis can cause wide range of diseases like arthritis ... susceptibility of proteins to proteolysis, and its irreversibility, distinguishes proteolysis ... more details
. Proteases can either break specific peptide bonds limited proteolysis , depending on the amino acid sequence of a protein, or break down a complete peptide to amino acids unlimited proteolysis . The activity ... www.protease.org International Proteolysis Society web page. See also The Proteolysis Map TopFIND , a scientific ... www.protease.org International Proteolysis Society http merops.sanger.ac.uk Merops the peptidase ... lists?peptidas.txt http www.proteolysis.org Proteolysis MAP from Center for Proteolytic Pathways http cutdb.burnham.org Proteolysis Cut Site database curated expert annotation from users http substrate.burnham.org ... more details
lowercase title DnaG Infobox nonhuman protein Name DNA primase image width caption Organism Escherichia coli E. coli K 12 substr. MG1655 TaxID 511145 Symbol dnaG AltSymbols dnaP EntrezGene 947570 PDB RefSeqmRNA RefSeqProtein NP 417538 UniProt P0ABS5 ECnumber 2.7.7.7 Chromosome chromosome EntrezChromosome NC 000913.2 GenLoc start 3208866 GenLoc end 3211135 DnaG is a bacterial primase which synthesizes short RNA oligonucleotides during DNA replication. These RNA oligonucleotides serve as primers for DNA synthesis by bacterial DNA polymerase Pol III. On one of the two parental strands, called the lagging strand, the primase makes a primer every few kilobases. These primers serve a substrates for synthesis of Okazaki fragments. DnaG associates through noncovalent interactions with bacterial replicative helicase DnaB to perform its primase activity, with about three DnaG primase proteins associating with each DnaB helicase. Primases tend to initiate synthesis at specific three nucleotide sequences on single stranded DNA ssDNA strand templates, and for DnaG the sequence is GTA. The DnaG primase is a 581 residue monomeric protein with three functional domains, according to proteolysis studies. There is an N terminal Zn binding domain residues 1 110 where a zinc ion is tetrahedrally coordinated between one histidine and three cysteine residues, which may play a role in recognizing ssDNA. The central domain residues 111 433 displays RNA polymerase activities, and is the site of RNA primer synthesis. The C terminal domain residues 434 581 is responsible for the noncovalent binding of DnaG to the DnaB helicase protein. ref name isbn0 470 57095 4 cite book author Voet, Donald title Biochemistry edition 4 publisher J. Wiley & Sons location New York year 2010 origyear page 1189 isbn 0 470 57095 4 ref External links MeshName dnaG protein, E coli MeshName DnaG Primase References Reflist enzyme stub DNA replication Category DNA replication ru DnaG ... more details
A neurochemical is an Organic chemistry organic molecule, such as serotonin , dopamine , or nerve growth factor , that participates in neural activity. The science of neurochemistry studies the functions of neurochemicals. Prominent neurochemicals The neuropeptide oxytocin . Oxytocin is involved in the control of maternal behavior. It is synthesized inside magnocellular neurosecretory cell s as a precursor protein that is processed by Protease proteolysis to its shorter active peptide form. Specific List of regions in the human brain parts of the brain such as the supraoptic nucleus produce oxytocin which acts on cells in locations such as the ventral pallidum to produce the behavioral effects of oxytocin. A large amount of oxytocin is made in the hypothalamus , transported to the posterior lobe of the pituitary and released into the blood stream by which it reaches target tissues such as the mammary gland s Breastfeeding milk letdown . In the diagram inset, oxytocin is shown bound to a carrier protein, neurophysin. Other examples of neurochemicals Glutamate is the most common neurotransmitter. Most neurons secrete with glutamate or GABA. Glutamate is excitatory, meaning that the release of glutamate by one cell usually causes adjacent cells to fire an action potential . Note Glutamate is chemically identical to the Monosodium glutamate MSG commonly used to flavor food. Gamma aminobutyric acid GABA is an example of an inhibitory neurotransmitter. Dopamine is another example of a neurotransmitter. It plays a key role in the functioning of the limbic system , which is involved in emotional function and control. It also plays a part in movement, alertness, and sensations of pleasure. Serotonin plays a regulatory role in mood, sleep, and other areas. Acetylcholine assists motor function and is involved in memory. Nitric oxide functions as a neurotransmitter, despite being a gas. It is not grouped with the other neurotransmitters because it is not released in the same wa ... more details
Infobox protein family Symbol ICAM N Name Intercellular adhesion molecule ICAM , N terminal domain image PDB 1iam EBI.jpg width caption structure of the two amino terminal domains of human intercellular adhesion molecule 1, icam 1 Pfam PF03921 Pfam clan CL0011 InterPro IPR013768 SMART PROSITE MEROPS SCOP 1zxq TCDB OPM family OPM protein CAZy CDD In molecular biology, intercellular adhesion molecules ICAMs and vascular cell adhesion molecule 1 VCAM 1 are part of the immunoglobulin superfamily. They are important in inflammation , immune response s and in intracellular cell signalling signalling events. ref name pmid9151947 cite journal author Gahmberg CG, Tolvanen M, Kotovuori P title Leukocyte adhesion structure and function of human leukocyte beta2 integrins and their cellular ligands journal Eur. J. Biochem. volume 245 issue 2 pages 215 32 year 1997 month April pmid 9151947 doi url ref The ICAM family consists of five members, designated ICAM 1 to ICAM 5. They are known to bind to leucocyte integrins CD11 CD18 during inflammation and in immune responses. In addition, ICAMs may exist in soluble forms in Homo sapiens human Blood plasma plasma , due to activation and proteolysis mechanisms at Cell biology cell surfaces. Mammalian intercellular adhesion molecules include ICAM 1 ICAM2 ICAM3 ICAM4 ICAM5 References reflist InterPro content IPR013768 Cell adhesion molecules Biochem stub Category Cell biology Category Protein families ... more details
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