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Information on EC 3.6.5.1 - heterotrimeric G-protein GTPase

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IUBMB Comments
This group comprises GTP-hydrolysing systems, where GTP and GDP alternate in binding. This group includes stimulatory and inhibitory G-proteins such as Gs, Gi, Go and Golf, targetting adenylate cyclase and/or K+ and Ca2+ channels; Gq stimulating phospholipase C; transducin activating cGMP phosphodiesterase; gustducin activating cAMP phosphodiesterase. Golf is instrumental in odour perception, transducin in vision and gustducin in taste recognition. At least 16 different alpha subunits (39-52 kDa), 5 beta subunits (36 kDa) and 12 gamma subunits (6-9 kDa) are known.
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This record set is specific for:
UNIPROT: P04896
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Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
Reaction Schemes
Synonyms
gtpase, transducin, gs alpha, heterotrimeric g protein, galphaq, guanosine triphosphatase, elongation factor 2, heterotrimeric g-protein, rab1a, g alpha q, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
heterotrimeric G protein Gsalpha
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GTP phosphohydrolase
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GTPase
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guanosine 5'-triphosphatase
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guanosine triphosphatase
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phosphatase, guanosine tri-
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ribosomal GTPase
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transducin GTPase
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REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
phosphorous acid anhydride hydrolysis
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SYSTEMATIC NAME
IUBMB Comments
GTP phosphohydrolase (signalling)
This group comprises GTP-hydrolysing systems, where GTP and GDP alternate in binding. This group includes stimulatory and inhibitory G-proteins such as Gs, Gi, Go and Golf, targetting adenylate cyclase and/or K+ and Ca2+ channels; Gq stimulating phospholipase C; transducin activating cGMP phosphodiesterase; gustducin activating cAMP phosphodiesterase. Golf is instrumental in odour perception, transducin in vision and gustducin in taste recognition. At least 16 different alpha subunits (39-52 kDa), 5 beta subunits (36 kDa) and 12 gamma subunits (6-9 kDa) are known.
CAS REGISTRY NUMBER
COMMENTARY hide
9059-32-9
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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
tubulin
direct transfer of GTP
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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UniProt
Manually annotated by BRENDA team
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
GNAS2_BOVIN
394
0
45709
Swiss-Prot
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SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
domain alpha2-4 and domain alpha3-beta5 are important for interaction with tubulin
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Layden, B.T.; Saengsawang, W.; Donati, R.J.; Yang, S.; Mulhearn, D.C.; Johnson, M.E.; Rasenick, M.M.
Structural model of a complex between the heterotrimeric G protein, Gsalpha, and tubulin
Biochim. Biophys. Acta
1783
964-973
2008
Bos taurus (P04896)
Manually annotated by BRENDA team