Information on EC - heterotrimeric G-protein GTPase

for references in articles please use BRENDA:EC3.6.5.1
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EC Tree
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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Word Map
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
Reaction Schemes
cone transducin, EC, EF-2, EF-G, elongation factor 2, G alpha i2, G alpha q, G alpha11, G alphaQ, G betagamma, more
GTP + H2O = GDP + phosphate
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