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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: P30679
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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
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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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
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SwissProt
Manually annotated by BRENDA team
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
additional information
no enzyme expression in H-2122 , A-549, H-661, and H-1299 cancer cells, quantitaative enzyme expression analysis, overview
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
G-protein, Galpha16, is a critical downstream effector of non-canonical Wnt signaling and a potent inhibitor of transformed cell growth in non small cell lung cancer, Wnt7a-stimulated ERK5 activation is Galpha16-dependent. Importance of Wnt7a signaling via its cognate receptor Frizzled9, a G-protein-coupled receptor, in inhibition of cell proliferation, anchorage-independent growth, and reversal of transformed phenotype in non small cell lung cancer primarily through activation of the tumor suppressor, PPARgamma. Galpha16 is a regulator of non small cell lung cancer cell proliferation and anchorage-independent cell growth. Galpha16 and Galphaq are important mediators of PPARgamma and E-cadherin expression in non small cell lung cancer cell lines
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
GNA15_HUMAN
374
0
43568
Swiss-Prot
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SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
heterotrimer
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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
Q212L
site-directed mutagenesis,GTPase-deficient inactive mutant
APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
the enzyme is important as a potential therapeutic target for the treatment of non small cell lung cancer
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Avasarala, S.; Bikkavilli, R.K.; Van Scoyk, M.; Zhang, W.; Lapite, A.; Hostetter, L.; Byers, J.T.; Heasley, L.E.; Sohn, J.W.; Winn, R.A.
Heterotrimeric G-protein, Galpha16, is a critical downstream effector of non-canonical Wnt signaling and a potent inhibitor of transformed cell growth in non small cell lung cancer
PLoS ONE
8
e76895
2013
Homo sapiens (P30679)
Manually annotated by BRENDA team