C H O3 CO O O N MeSHName Guanosine Section2 Chembox Properties Formula C sub 10 sub H sub 13 sub N sub ... Hazards MainHazards FlashPt Autoignition Guanosine is a purine nucleoside comprising guanine attached to a ribose ribofuranose ring via a N sub 9 sub glycosidic bond . Guanosine can be Phosphorylation phosphorylated to become guanosine monophosphate GMP , cyclic guanosine monophosphate cGMP , guanosine diphosphate GDP , and guanosine triphosphate GTP . These forms play important roles in various ... , often used in herpes treatment, is structurally similar to guanosine. Guanosine is required for an RNA ... date October 2010 ref File GuanosinN.png thumb left Guanosine with numbered carbons clear References ... bg ca Guanosina cs Guanosin de Guanosin es Guanosina fa fr Guanosine gl Guanosina it Guanosina lt Guanozinas nl Guanosine ja oc Guanosina pl Guanozyna pt Guanosina sr Guanozin fi Guanosiini ur Guanosine zh ... more details
enzyme Name guanosine deaminase EC number 3.5.4.15 CAS number 9067 85 0 IUBMB EC number 3 5 4 15 GO code 0047974 image width caption In enzymology , a guanosine deaminase EC number 3.5.4.15 is an enzyme that catalysis catalyzes the chemical reaction guanosine H sub 2 sub O math rightleftharpoons math xanthosine NH sub 3 sub Thus, the two substrate biochemistry substrates of this enzyme are guanosine and water H sub 2 sub O , whereas its two product chemistry products are xanthosine and ammonia NH sub 3 sub . This enzyme belongs to the family of hydrolase s, those acting on carbon nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is guanosine aminohydrolase . This enzyme is also called guanosine aminase . References reflist 1 cite journal author Isihida Y, Shirafiji H, Kida M and Yoneda M date 1969 title Studies on the guanosine degrading system in bacterial cell. III Preparation and properties of guanosine deaminase journal Agric. Biol. Chem. volume 33 pages 384&ndash 390 hydrolase stub Category EC 3.5.4 Category Enzymes of unknown structure ... more details
enzyme Name guanosine phosphorylase EC number 2.4.2.15 CAS number 9030 28 8 IUBMB EC number 2 4 2 15 GO code 0047975 image width caption In enzymology , a guanosine phosphorylase EC number 2.4.2.15 is an enzyme that catalysis catalyzes the chemical reaction guanosine phosphate math rightleftharpoons math guanine alpha D ribose 1 phosphate Thus, the two substrate biochemistry substrates of this enzyme are guanosine and phosphate , whereas its two product chemistry products are guanine and alpha D ribose 1 phosphate . This enzyme belongs to the family of glycosyltransferase s, specifically the pentosyltransferases. The systematic name of this enzyme class is guanosine phosphate alpha D ribosyltransferase . This enzyme participates in purine metabolism . References reflist 1 cite journal author Yamada EW year 1961 title The phosphorolysis of nucleosides by rabbit bone marrow journal J. Biol. Chem. volume 236 pages 3043&ndash 3046 pmid 14008731 Category EC 2.4.2 Category Enzymes of unknown structure enzyme stub ... more details
enzyme Name guanosine diphosphatase EC number 3.6.1.42 CAS number 98037 56 0 IUBMB EC number 3 6 1 42 GO code 0004382 image width caption In enzymology , a guanosine diphosphatase EC number 3.6.1.42 is an enzyme that catalysis catalyzes the chemical reaction GDP H sub 2 sub O math rightleftharpoons math GMP phosphate Thus, the two substrate biochemistry substrates of this enzyme are guanosine diphosphate GDP and water H sub 2 sub O , whereas its two product chemistry products are guanosine monophosphate GMP and phosphate . This enzyme belongs to the family of hydrolase s, specifically those acting on acid anhydrides in phosphorus containing anhydrides. The systematic name of this enzyme class is GDP phosphohydrolase . This enzyme is also called GDPase . References reflist 1 cite journal author Raychaudhuri P, Ghosh S, Maitra U date 1985 title Purification and characterization of a guanosine diphosphatase activity from calf liver microsomal salt wash proteins journal J. Biol. Chem. volume 260 pages 8306&ndash 11 pmid 2989286 issue 14 hydrolase stub Category EC 3.6.1 Category Enzymes of unknown structure ... more details
Chembox verifiedrevid 445871473 ImageFile GMP chemical structure.png ImageSize 200px ImageFile1 Guanosine monophosphate space filling.png ImageSize1 200px ImageName1 Space filling model of guanosine monophosphate IUPACName small 2 R ,3 S ,4 R ,5 R 5 2 Amino 6 oxo 3 H purin 9 yl 3,4 dihydroxyoxolan 2 yl methyl dihydrogen phosphate small Citation needed date April 2010 OtherNames 5 Guanidylic acid, br 5 Guanylic acid, br E number E626 Section1 Chembox Identifiers Abbreviations GMP CASNo Ref cascite correct CAS CASNo 85 32 5 PubChem 6804 SMILES C1 NC2 C N1 C H 3 C H C H C H O3 COP O O O O O NC NC2 O N MeSHName Guanosine monophosphate Section2 Chembox Properties Formula C sub 10 sub H sub 14 sub N sub 5 sub O sub 8 sub P MolarMass 363.22 g mol pKa 0.7, 2.4, 6.1, 9.4 Appearance Density MeltingPt BoilingPt Solubility Section3 Chembox Hazards MainHazards FlashPt Autoignition Refimprove date April 2010 Guanosine monophosphate , also known as 5 guanidylic acid or guanylic acid and abbreviated GMP , is a nucleotide that is used as a monomer in RNA . It is an ester of phosphoric acid with the nucleoside guanosine . GMP consists of the phosphate Functional group group , the pentose sugar ribose , and the nucleobase guanine hence it is a ribonucleoside monophosphate. Guanosine monophosphate is produced from dried fish or dried seaweed. Citation needed date August 2007 Guanosine monophosphate in the form of its salt chemistry salts , such as disodium guanylate E number E627 , dipotassium guanylate E628 and calcium guanylate E629 , are food additive s used as flavor enhancer s to provide the umami taste. It is often used in synergy with disodium inosinate the combination is known as disodium ... soy protein complex hydrolyzed soy protein , autolyzed yeast or soy sauce . As inhibitor of guanosine ... DEFAULTSORT Guanosine Monophosphate Category Nucleotides Category Flavour enhancers Category ... fa fr Guanosine monophosphate gl Guanos n monofosfato it Guanosina monofosfato ... more details
chembox Verifiedfields changed verifiedrevid 461124476 ImageFile Guanosindiphosphat protoniert.svg ImageSize IUPACName OtherNames Section1 Chembox Identifiers CASNo Ref cascite changed ?? CASNo 146 91 8 ChEMBL Ref ebicite correct EBI ChEMBL 384759 PubChem 730 IUPHAR ligand 2410 ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 8630 ChEBI Ref ebicite correct EBI ChEBI 17552 StdInChI Ref stdinchicite correct chemspider StdInChI 1S C10H15N5O11P2 c11 10 13 7 4 8 18 14 10 12 2 15 7 9 6 17 5 16 3 25 9 1 24 28 22,23 26 27 19,20 21 h2 3,5 6,9,16 17H,1H2, H,22,23 H2,19,20,21 H3,11,13,14,18 t3 ,5 ,6 ,9 m1 s1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey QGWNDRXFNXRZMB UUOKFMHZSA N SMILES C1 NC2 C N1C3C C C O3 COP O O OP O O O O O NC NC2 O N Section2 Chembox Properties Formula C sub 10 sub H sub 15 sub N sub 5 sub O sub 11 sub P sub 2 sub MolarMass 443.200522 Appearance Density MeltingPt BoilingPt Solubility Section3 Chembox Hazards MainHazards FlashPt Autoignition Guanosine diphosphate , abbreviated GDP , is a nucleoside diphosphate . It is an ester of pyrophosphoric acid with the nucleoside guanosine . GDP consists of the pyrophosphate Functional group group , the pentose sugar ribose , and the nucleobase guanine . GDP is the product of guanosine triphosphate GTP dephosphorylation by GTPase s, e.g., the G protein s that are involved in signal transduction . GDP is converted into GTP with the help of pyruvate kinase and phosphoenolpyruvate. See also Nucleoside Nucleotide DNA RNA Oligonucleotide Guanosine triphosphate Nucleobases, nucleosides, and nucleotides biochem stub Category Nucleotides Category Purines cs Guanosindifosf t da Guanosindifosfat de Guanosindiphosphat es Guanos n difosfato fa fr Guanosine diphosphate gl Guanos n difosfato it Guanosindifosfato nl Guanosinedifosfaat ja oc Guanosina difosfat pl Guanozyno 5 difosforan pt Guanosina difosfato ru sr Guanozin difosfat fi Guanosiinidifosfaatti sv ... more details
with G proteins , in second messenger mechanisms where it is converted to Guanosine diphosphate GDP guanosine diphosphate through the action of GTPase s. Uses Energy Transfer GTP is involved in energy ... guanosine triphosphate redirects here Cyclic guanosine triphosphate cGTP helps cyclic adenosine monophosphate ... imidodiphosphate References references Nucleobases, nucleosides, and nucleotides DEFAULTSORT Guanosine ... trifosfato fa fr Guanosine triphosphate gl Guanos n trifosfato it Guanosintrifosfato ... more details
p ppGpp , guanosine pentaphosphate or tetraphosphate is an alarmone which is involved in the stringent response in bacteria , causing the Enzyme inhibition inhibition of RNA synthesis when there is a shortage of amino acid s present. This causes Translation biology translation to decrease and the amino acid s present are therefore conserved. Furthermore, genes for amino acid uptake transport into the cell from surrounding media and biosynthesis are also upregulated. However, p ppGpp influences the overall gene expression pattern in the cell so that many genes required for survival in stressful conditions are up regulated. A complete absence of p ppGpp generates its own unique phenotypic features in E. coli. These include multiple amino acid requirements, poor survival of aged cultures, aberrant cell division, morphology, and immotility, as well as being locked in a growth mode during entry into starvation. p ppGpp is created via pppGpp synthase , also known as RelA, and is converted from pppGpp to ppGpp via pppGpp phosphohydrolase. RelA is associated with about every one in two hundred ribosome s and it becomes activated when an uncharged transfer RNA tRNA molecule enters the A site of the ribosome, due to the shortage of amino acid required by the tRNA. If a mutant bacterium is relA sup sup it is said to be relaxed and no regulation of RNA production due to amino acid absence is seen. Targets of p ppGpp include rRNA operon s, of which there are seven in Escherichia coli a commonly used bacteria l model organism , all of which have 2 Promoter biology promoter s. When p ppGpp associates with the promoter it affects the RNA polymerase enzyme s ability to bind and initiate Transcription genetics transcription . It is thought that p ppGpp may affect the stability of the open complex formed by RNA polymerase on DNA and therefore affect promoter clearance. Its presence also leads to an increase in pausing during transcription elongation and it competes with nucleoside triphosphate ... more details
enzyme Name guanosine triphosphate guanylyltransferase EC number 2.7.7.45 CAS number 54576 89 5 IUBMB EC number 2 7 7 45 GO code 0047351 image width caption In enzymology , a guanosine triphosphate guanylyltransferase EC number 2.7.7.45 is an enzyme that catalysis catalyzes the chemical reaction 2 GTP math rightleftharpoons math diphosphate P sub 1 sub ,P sub 4 sub bis 5 guanosyl tetraphosphate Hence, this enzyme has one substrate biochemistry substrate , guanosine triphosphate GTP , and two product chemistry products , diphosphate and P1,P4 bis 5 guanosyl tetraphosphate . This enzyme belongs to the family of transferase s, specifically those transferring phosphorus containing nucleotide groups nucleotidyltransferase s . The systematic name of this enzyme class is GTP GTP guanylyltransferase . Other names in common use include diguanosine tetraphosphate synthetase , GTP GTP guanylyltransferase , Gp4G synthetase , and guanosine triphosphate guanose triphosphate guanylyltransferase . References reflist 1 cite journal author Warner AH, Beers PC, Huang FL date 1974 title Biosynthesis of the diguanosine nucleotides. I. Purification and properties of an enzyme from yolk platelets of brine shrimp embryos journal Can. J. Biochem. volume 52 pages 231&ndash 40 pmid 4208243 issue 3 enzyme stub Category EC 2.7.7 Category Enzymes of unknown structure ... more details
j.carres.2003.07.009 ref References reflist See also Nucleoside Nucleotide GuanosineGuanosine ... fr Guanosine diphosphate mannose fi Guanosiinidifosfaattimannoosi ... more details
Pfam box Symbol GDI Name GDP dissociation inhibitor image width caption Pfam PF00996 InterPro IPR002005 SMART Prosite SCOP 1gnd TCDB OPM family OPM protein PDB PDB3 1ukv G 1 449 PDB3 2bcg G 1 449 PDB3 1lv0 A 1 438 PDB3 1gnd 1 430 PDB3 1d5t A 1 431 PDB3 1vg9 E 5 542 PDB3 1vg0 A 5 542 PDB3 1ltx R 5 542 The Guanosine nucleotide dissociation inhibitors GDIs , bind to the GDP bound form of Rho and Rab small GTPase s and not only prevent exchange maintaining the small GTPase in an off state , but also prevent the small GTPase from localizing at the membrane, which is their place of action. This inhibition can be removed by the action of a Guanine nucleotide exchange factor GEF . It also inhibits cdc42 by binding to its tail and preventing cdc42 insert itself into membrane, hence it cannot trigger Wiskott Aldrich syndrome protein WASPs and cannot lead to nucleates of F actin External links MeshName Guanine Nucleotide Dissociation Inhibitors Category GTP binding protein regulators GTP binding protein regulators biochem stub DEFAULTSORT Guanosine Nucleotide Dissociation Inhibitors sr Inhibitori disocijacije guanozin nukleotida ... more details
. This enzyme converts Guanosine triphosphate GTP to cGMP. In turn, peptide hormones such as the atrial ... taste. Synthesis of new guanosine 5 phosphate derivatives and their synergistic effect with monosodium ... fr Guanosine monophosphate cyclique gl Guanos n monofosfato c clico it Guanosina monofosfato ciclico ... more details
enzyme Name guanosine 5 triphosphate,3 diphosphate diphosphatase EC number 3.6.1.40 CAS number 85130 44 5 IUBMB EC number 3 6 1 40 GO code 0008894 image width caption In enzymology , a guanosine 5 triphosphate,3 diphosphate diphosphatase EC number 3.6.1.40 is an enzyme that catalysis catalyzes the chemical reaction guanosine 5 triphosphate,3 diphosphate H sub 2 sub O math rightleftharpoons math guanosine 5 diphosphate,3 diphosphate phosphate Thus, the two substrate biochemistry substrates of this enzyme are guanosine 5 triphosphate,3 diphosphate and water H sub 2 sub O , whereas its two product chemistry products are guanosine 5 diphosphate,3 diphosphate and phosphate . This enzyme belongs to the family of hydrolase s, specifically those acting on acid anhydrides in phosphorus containing anhydrides. The systematic name of this enzyme class is guanosine 5 triphosphate,3 diphosphate 5 phosphohydrolase . Other names in common use include pppGpp 5 phosphohydrolase , guanosine 5 triphosphate,3 diphosphate pyrophosphatase , guanosine 5 triphosphate 3 diphosphate 5 phosphohydrolase , guanosine pentaphosphatase , guanosine pentaphosphate phosphatase , guanosine 5 triphosphate 3 diphosphate 5 phosphatase , and guanosine pentaphosphate phosphohydrolase . This enzyme participates in purine metabolism . Structural studies As of late 2007, two tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1T6C and PDB link 1T6D . References reflist 1 cite journal author Hara A, Sy J date 1983 title Guanosine 5 triphosphate, 3 diphosphate 5 phosphohydrolase Purification and substrate specificity journal J. Biol. Chem. volume 258 pages 1678&ndash 83 pmid 6130093 issue 3 hydrolase stub Category EC 3.6.1 Category Enzymes of known structure ... more details
enzyme Name 3 ,5 cyclic GMP phosphodiesterase EC number 3.1.4.35 CAS number 9068 52 4 IUBMB EC number 3 1 4 35 GO code 0047555 image width caption In enzymology , a 3 ,5 cyclic GMP phosphodiesterase EC number 3.1.4.35 is an enzyme that catalysis catalyzes the chemical reaction guanosine 3 ,5 cyclic phosphate H sub 2 sub O math rightleftharpoons math guanosine 5 phosphate Thus, the two substrate biochemistry substrates of this enzyme are guanosine 3 ,5 cyclic phosphate and water H sub 2 sub O , whereas its product chemistry product is guanosine 5 phosphate . This enzyme belongs to the family of hydrolase s, specifically those acting on phosphoric ester diester bonds. The systematic name of this enzyme class is 3 ,5 cyclic GMP 5 nucleotidohydrolase . Other names in common use include guanosine cyclic 3 ,5 phosphate phosphodiesterase , cyclic GMP phosphodiesterase , cyclic 3 ,5 GMP phosphodiesterase , cyclic guanosine 3 ,5 monophosphate phosphodiesterase , cyclic guanosine 3 ,5 phosphate phosphodiesterase , cGMP phosphodiesterase , cGMP PDE , and cyclic guanosine 3 ,5 phosphate phosphodiesterase . Structural studies As of late 2007, 5 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1MC0 , PDB link 2CHM , PDB link 2H40 , PDB link 2H42 , and PDB link 2H44 . References reflist 1 cite journal author Marks F and Raab I date 1974 title The second messenger system of mouse epidermis. IV. Cyclic AMP and cyclic GMP phosphodiesterase journal Biochim. Biophys. Acta volume 334 pages 368&ndash 377 hydrolase stub Esterases Category EC 3.1.4 Category Enzymes of known structure ... more details
enzyme Name guanosine 3 ,5 bis diphosphate 3 diphosphatase EC number 3.1.7.2 CAS number 70457 12 4 IUBMB EC number 3 1 7 2 GO code 0008893 image width caption In enzymology , a guanosine 3 ,5 bis diphosphate 3 diphosphatase EC number 3.1.7.2 is an enzyme that catalysis catalyzes the chemical reaction guanosine 3 ,5 bis diphosphate H sub 2 sub O math rightleftharpoons math guanosine 5 diphosphate diphosphate Thus, the two substrate biochemistry substrates of this enzyme are guanosine 3 ,5 bis diphosphate and water H sub 2 sub O , whereas its two product chemistry products are guanosine 5 diphosphate and diphosphate . This enzyme belongs to the family of hydrolase s, specifically those acting on diphosphoric ester monoester bonds. The systematic name of this enzyme class is guanosine 3 ,5 bis diphosphate 3 diphosphohydrolase . Other names in common use include guanosine 3 ,5 bis diphosphate 3 pyrophosphatase , PpGpp 3 pyrophosphohydrolase , and PpGpp phosphohydrolase . This enzyme participates in purine metabolism . Structural studies As of late 2007, only one tertiary structure structure has been solved for this class of enzymes, with the Protein Data Bank PDB accession code PDB link 1VJ7 . References reflist 1 cite journal author Heinemeyer EA, Richter D date 1978 title Characterization of the guanosine 5 triphosphate 3 diphosphate and guanosine 5 diphosphate 3 diphosphate degradation reaction catalyzed by a specific pyrophosphorylase from Escherichia coli journal Biochemistry. volume 17 pages 5368&ndash 72 pmid 365225 doi 10.1021 bi00618a007 issue 25 cite journal author Richter D, Fehr S, Harder R date 1979 title The guanosine 3 ,5 bis diphosphate ppGpp cycle. Comparison of synthesis and degradation of guanosine 3 ,5 bis diphosphate in various bacterial systems journal Eur. J. Biochem. volume 99 pages 57&ndash 64 pmid 114395 doi 10.1111 j.1432 1033.1979.tb13230.x issue 1 hydrolase stub Category EC 3.1.7 Category Enzymes of known structure ... more details
enzyme Name GTP diphosphokinase EC number 2.7.6.5 CAS number 63690 89 1 IUBMB EC number 2 7 6 5 GO code 0008728 image width caption In enzymology , a GTP diphosphokinase EC number 2.7.6.5 is an enzyme that catalysis catalyzes the chemical reaction ATP GTP math rightleftharpoons math AMP guanosine 3 diphosphate 5 triphosphate Thus, the two substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP and guanosine triphosphate GTP , whereas its two product chemistry products are adenosine monophosphate AMP and guanosine 3 diphosphate 5 triphosphate . This enzyme belongs to the family of transferase s, specifically those transferring two phosphorus containing groups diphosphotransferase s . The systematic name of this enzyme class is ATP GTP 3 diphosphotransferase . Other names in common use include stringent factor , guanosine 3 ,5 polyphosphate synthase , GTP pyrophosphokinase , ATP GTP 3 diphosphotransferase , guanosine 5 ,3 polyphosphate synthetase , p ppGpp synthetase I , p ppGpp synthetase II , guanosine pentaphosphate synthetase , GPSI , and GPSII . This enzyme participates in purine metabolism . Structural studies As of late 2007, 4 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1E3H , PDB link 1E3P , PDB link 1VJ7 , and PDB link 2BE3 . References reflist 1 cite journal author Fehr S, Richter D date 1981 title Stringent response of Bacillus stearothermophilus evidence for the existence of two distinct guanosine 3 ,5 polyphosphate synthetases journal J. Bacteriol. volume 145 pages 68&ndash 73 pmid 6161916 issue 1 pmc 217245 cite journal author Sy J, Akers H date 1976 title Purification and properties of guanosine 5 , 3 polyphosphate synthetase from Bacillus brevis journal Biochemistry. volume 15 pages 4399&ndash 403 pmid 184817 doi 10.1021 bi00665a008 issue 20 enzyme stub Category EC 2.7.6 Category Enzymes of known structure ... more details
enzyme Name mannose 1 phosphate guanylyltransferase EC number 2.7.7.13 CAS number 37278 24 3 IUBMB EC number 2 7 7 13 GO code 0004475 image width caption In enzymology , a mannose 1 phosphate guanylyltransferase EC number 2.7.7.13 is an enzyme that catalysis catalyzes the chemical reaction GTP alpha D mannose 1 phosphate math rightleftharpoons math diphosphate GDP mannose Thus, the two substrate biochemistry substrates of this enzyme are guanosine triphosphate GTP and alpha D mannose 1 phosphate , whereas its two product chemistry products are diphosphate and GDP mannose . This enzyme belongs to the family of transferase s, specifically those transferring phosphorus containing nucleotide groups nucleotidyltransferase s . The systematic name of this enzyme class is GTP alpha D mannose 1 phosphate guanylyltransferase . Other names in common use include GTP mannose 1 phosphate guanylyltransferase , PIM GMP phosphomannose isomerase guanosine 5 diphospho D mannose , pyrophosphorylase , GDP mannose pyrophosphorylase , guanosine 5 diphospho D mannose pyrophosphorylase , guanosine diphosphomannose pyrophosphorylase , guanosine triphosphate mannose 1 phosphate guanylyltransferase , and mannose 1 phosphate guanylyltransferase guanosine triphosphate . This enzyme participates in fructose and mannose metabolism . Structural studies As of late 2007, only one tertiary structure structure has been solved for this class of enzymes, with the Protein Data Bank PDB accession code PDB link 2CU2 . References reflist 1 cite journal author Munch Peterson A date 1955 title Enzymatic synthesis and phosphorolysis of guanosine diphosphate mannose journal Arch. Biochem. Biophys. volume 55 pages 592&ndash 593 doi 10.1016 0003 9861 55 90441 0 issue 2 cite journal author PREISS J, WOOD E date 1964 title SUGAR NUCLEOTIDE REACTIONS IN ARTHROBACTER. I. GUANOSINE DIPHOSPHATE MANNOSE PYROPHOSPHORYLASE PURIFICATION AND PROPERTIES journal J. Biol. Chem. volume 239 pages 3119&ndash 26 pmid 14245350 enzym ... more details
EF Ts elongation factor thermo stable is one of the prokaryotic elongation factors . EF Ts serves as the guanine nucleotide exchange factor for EF Tu elongation factor thermo unstable , catalyzing the release of guanosine diphosphate from EF Tu. This enables EF Tu to bind to a new guanosine triphosphate molecule, release EF Ts, and go on to catalyze another aminoacyl tRNA addition. GeneticTranslation Category Protein biosynthesis enzyme stub ... more details
unreferenced date September 2009 Exisulind is a drug used to treat cancer . It acts by inhibiting the enzyme cyclic guanosine monophosphate phosphodiesterase . Trademark by OSI Pharmaceuticals is Aptosyn. Category Antineoplastic drugs Antineoplastic drug stub ... more details
Image GDP chemical structure.png thumb Guanosine diphosphate Image GTP chemical structure.png thumb Guanosine triphosphate GTP binding protein regulators regulate G protein s in several different ways. Small GTPase s act as molecular switches in signaling pathways, which act to regulate functions of other proteins. They are active or ON when it is bound to Guanosine triphosphate GTP and inactive or OFF when bound to Guanosine diphosphate GDP . ref name Krauss2008 cite book author Gerhard Krauss title Biochemistry of signal transduction and regulation url http books.google.com books?id jRlf BG GrMC&pg PA235 accessdate 15 December 2010 year 2008 publisher Wiley VCH isbn 9783527313976 pages 235 ref Activation and deactivation of small GTPases can be regarded as occurring in a cycle, between the GTP bound and GDP bound form, regulated by other regulatory proteins. Exchangers The inactive form of GTPases GDP form are activated by a class of proteins called Guanosine nucleotide exchange factors GEFs . GEFs catalyse nucleotide exchange by encouraging the release of GDP from the small GTPase by displacement of the small GTPase associated Mg sup 2 sup ion and GDP s replacement by GTP which is in at least a 10 fold excess within the cell . Inactivation of the active small GTPase is achieved through hydrolysis of the GTP by the small GTPase s intrinsic GTP hydrolytic activity. Stimulators The rate of GTP hydrolysis for small GTPases is generally too slow to create physiologically relevant transient signals, and thus requires another class of regulatory proteins to accelerate this activity, the GTPase activating protein s GAPs . Inhibitors Another class of regulatory proteins, the Guanosine nucleotide dissociation inhibitors GDIs , bind to the GDP bound form of Rho and Rab small GTPases and not only prevent exchange maintaining the small GTPase in an off state , but also prevent the small GTPase from localizing at the membrane, which is their place of action. References reflist ... more details
protein Name guanosine monophosphate reductase caption image width HGNCid 4376 Symbol GMPR AltSymbols EntrezGene 2766 OMIM 139265 RefSeq NM 006877 UniProt P36959 PDB ECnumber 1.7.1.7 Chromosome 6 Arm p Band 23 LocusSupplementaryData protein Name guanosine monophosphate reductase 2 caption image width HGNCid 4377 Symbol GMPR2 AltSymbols EntrezGene 51292 OMIM 610781 RefSeq NM 016576 UniProt Q9P2T1 PDB ECnumber Chromosome 14 Arm q Band 11.2 LocusSupplementaryData GMP reductase EC number 1.7.1.7 Guanosine 5 monophosphate oxidoreductase is an enzyme that catalyses the irreversible and NADPH dependent reductive deamination of Guanosine monophosphate GMP into Inosine monophosphate IMP . ref name pmid2904262 cite journal author Andrews SC, Guest JR title Nucleotide sequence of the gene encoding the GMP reductase of Escherichia coli K12 journal Biochem. J. volume 255 issue 1 pages 35 43 year 1988 month October pmid 2904262 pmc 1135187 doi url ref NADPH Guanosine monophosphate guanosine 5 phosphate NADP sup sup Inosine monophosphate inosine 5 phosphate NH sub 3 sub It converts nucleobase, nucleoside and nucleotide derivatives of G to A nucleotides, and maintains intracellular balance of A and G nucleotide nucleotides . In melanocytic cells, GMP reductase gene expression may be regulated by Microphthalmia associated transcription factor MITF . ref name pmid19067971 cite journal author Hoek KS, Schlegel NC, Eichhoff OM, et al. title Novel MITF targets identified using a two step DNA microarray strategy journal Pigment Cell Melanoma Res. volume 21 issue 6 pages 665 76 year 2008 pmid 19067971 doi 10.1111 j.1755 148X.2008.00505.x issn ref See also Purine metabolism References reflist External links MeshName GMP reductase Nitrogenous donor oxidoreductases Nucleotide metabolism InterPro content IPR001093 biochemistry stub it GMP reduttasi ja GMP ... more details
CGMP is an initialism . It can refer to cyclic guanosine monophosphate cGMP current good manufacturing practice cGMP CGMP, the Cisco version of the Internet Group Management Protocol snooping caseinoglycomacropeptide CGMP or caseinomacropeptide see K Casein Competitive Guaranteed Maximum Price disambiguation de CGMP ja CGMP sr CGMP ... more details
CGTP may refer to cyclic guanosine triphosphate Confederaci n General de Trabajadores de Panam , the General Confederation of Workers of Panama Confedera o Geral dos Trabalhadores Portugueses, the General Confederation of the Portuguese Workers Confederaci n General de Trabajadores del Per current Good Tissue Practices disambig es CGTP ... more details
A cyclase is an enzyme , almost always a lyase , that catalysis catalyzes a chemical reaction to form a cyclic compound . Important cyclase enzymes include Adenylyl cyclase , which forms cyclic AMP from adenosine triphosphate Guanylyl cyclase , which forms cyclic GMP from guanosine triphosphate Guanylyl cyclase c disambig Category Enzymes ... more details
enzyme Name acid CoA ligase GDP forming EC number 6.2.1.10 CAS number 37318 59 5 IUBMB EC number 6 2 1 10 GO code 0047612 image width caption In enzymology , an acid CoA ligase GDP forming EC number 6.2.1.10 is an enzyme that catalysis catalyzes the chemical reaction GTP an acid CoA math rightleftharpoons math GDP phosphate acyl CoA The 3 substrate biochemistry substrates of this enzyme are guanosine triphosphate GTP , acid , and coenzyme A CoA , whereas its 3 product chemistry products are guanosine diphosphate GDP , phosphate , and acyl CoA . This enzyme belongs to the family of ligase s, specifically those forming carbon sulfur bonds as acid thiol ligases. The systematic name of this enzyme class is acid CoA ligase GDP forming . Other names in common use include acyl CoA synthetase GDP forming , and acyl coenzyme A synthetase guanosine diphosphate forming . References reflist 1 cite journal author Rossi CR and Gibson DM date 1964 title Activation of fatty acids by a guanosine triphosphate specific thiokinase from liver mitochondria journal J. Biol. Chem. volume 239 pages 1694&ndash 1699 pmid 14213337 url http www.jbc.org content 239 6 1694.full.pdf format PDF issue 6 ligase stub Category EC 6.2.1 Category Enzymes of unknown structure ... more details
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