P38406
SS
Gene name |
Gnal |
Protein name |
Guanine nucleotide-binding protein G |
Names |
olf subunit alpha , Adenylate cyclase-stimulating G alpha protein, olfactory type |
Species |
Rattus norvegicus (Rat) |
KEGG Pathway |
rno:24611 |
EC number |
|
Protein Class |
|
Descriptions
The Gα subunits of heterotrimeric G proteins are GTP hydrolyases which, upon receptor activation, bind to GTP and regulate effector molecules. Gα-catalyzed hydrolysis of GTP to GDP releases the Gα-GDP product complex from effector and allows its sequestration by inhibitory Gβγ subunits. In Gia1-GppNHp complex, Gln204 of Gia1 interacts with nucleophilic water (Wnuc), participating directly in the Gia1-GTP ground state but must reorient to stabilize the transition state. RGS4, a member of the RGS family of G protein stimulatory factors, accelerates hydrolysis of GTP by Gia1 by destabilizing the ground-state conformation of Gln204. Insertion of Asn128 of RGS4 into the active site enhances catalysis by aiding in binding, orienting, and polarizing Wnuc in the pre-transition state complex. Asn128 of RGS4 displaces the side chain of Gln204 from its anti-catalytic position in the ground state, freeing it to participate in stabilization of the transition state.
Autoinhibitory domains (AIDs)
Target domain |
189-376 (P-loop containing nucleoside triphosphate hydrolase domain) |
Relief mechanism |
Partner binding |
Assay |
|
Accessory elements
No accessory elements
References
- Coleman DE et al. (1999) "Structure of Gialpha1.GppNHp, autoinhibition in a galpha protein-substrate complex", The Journal of biological chemistry, 274, 16669-72
- Lutz S et al. (2007) "Structure of Galphaq-p63RhoGEF-RhoA complex reveals a pathway for the activation of RhoA by GPCRs", Science (New York, N.Y.), 318, 1923-7
Autoinhibited structure
Activated structure
1 structures for P38406
| Entry ID | Method | Resolution | Chain | Position | Source |
|---|---|---|---|---|---|
| AF-P38406-F1 | Predicted | AlphaFoldDB |
No variants for P38406
| Variant ID(s) | Position | Change | Description | Diseaes Association | Provenance |
|---|---|---|---|---|---|
| No variants for P38406 | |||||
No associated diseases with P38406
3 GO annotations of cellular component
| Name | Definition |
|---|---|
| cytoplasm | The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. |
| heterotrimeric G-protein complex | Any of a family of heterotrimeric GTP-binding and hydrolyzing proteins; they belong to a superfamily of GTPases that includes monomeric proteins such as EF-Tu and RAS. Heterotrimeric G-proteins consist of three subunits; the alpha subunit contains the guanine nucleotide binding site and possesses GTPase activity; the beta and gamma subunits are tightly associated and function as a beta-gamma heterodimer; extrinsic plasma membrane proteins (cytoplasmic face) that function as a complex to transduce signals from G protein-coupled receptors to an effector protein. |
| plasma membrane | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. |
5 GO annotations of molecular function
| Name | Definition |
|---|---|
| G protein-coupled receptor binding | Binding to a G protein-coupled receptor. |
| G-protein beta/gamma-subunit complex binding | Binding to a complex of G-protein beta/gamma subunits. |
| GTP binding | Binding to GTP, guanosine triphosphate. |
| GTPase activity | Catalysis of the reaction |
| metal ion binding | Binding to a metal ion. |
7 GO annotations of biological process
| Name | Definition |
|---|---|
| adenylate cyclase-activating dopamine receptor signaling pathway | An adenylate cyclase-activating G protein-coupled receptor signaling pathway initiated by dopamine binding to its receptor, and ending with the regulation of a downstream cellular process. |
| adenylate cyclase-activating G protein-coupled receptor signaling pathway | A G protein-coupled receptor signaling pathway in which the signal is transmitted via the activation of adenylyl cyclase activity and a subsequent increase in the intracellular concentration of cyclic AMP (cAMP). |
| cellular response to dopamine | Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a dopamine stimulus. |
| regulation of long-term synaptic depression | Any process that modulates the frequency, rate or extent of long term synaptic depression. |
| response to amphetamine | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amphetamine stimulus. Amphetamines consist of a group of compounds related to alpha-methylphenethylamine. |
| response to caffeine | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a caffeine stimulus. Caffeine is an alkaloid found in numerous plant species, where it acts as a natural pesticide that paralyzes and kills certain insects feeding upon them. |
| sensory perception of smell | The series of events required for an organism to receive an olfactory stimulus, convert it to a molecular signal, and recognize and characterize the signal. Olfaction involves the detection of chemical composition of an organism's ambient medium by chemoreceptors. This is a neurological process. |
22 homologous proteins in AiPD
| UniProt AC | Gene Name | Protein Name | Species | Evidence Code |
|---|---|---|---|---|
| P04896 | GNAS | Guanine nucleotide-binding protein G(s) subunit alpha isoforms short | Bos taurus (Bovine) | PR |
| P38405 | GNAL | Guanine nucleotide-binding protein G | Homo sapiens (Human) | SS |
| P29797 | GNAS | Guanine nucleotide-binding protein G(s) subunit alpha | Sus scrofa (Pig) | PR |
| P93564 | GPA1 | Guanine nucleotide-binding protein alpha-1 subunit | Solanum tuberosum (Potato) | SS |
| Q6Q7Y5 | Gna13 | Guanine nucleotide-binding protein subunit alpha-13 | Rattus norvegicus (Rat) | SS |
| Q63210 | Gna12 | Guanine nucleotide-binding protein subunit alpha-12 | Rattus norvegicus (Rat) | SS |
| Q9JID2 | Gna11 | Guanine nucleotide-binding protein subunit alpha-11 | Rattus norvegicus (Rat) | SS |
| O88302 | Gna15 | Guanine nucleotide-binding protein subunit alpha-15 | Rattus norvegicus (Rat) | SS |
| P82471 | Gnaq | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| P29348 | Gnat3 | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| P04897 | Gnai2 | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| P08753 | Gnai3 | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| P19627 | Gnaz | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| P10824 | Gnai1 | Guanine nucleotide-binding protein G subunit alpha-1 | Rattus norvegicus (Rat) | EV |
| P59215 | Gnao1 | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| Q63803 | Gnas | Guanine nucleotide-binding protein G | Rattus norvegicus (Rat) | SS |
| Q0DJ33 | GPA1 | Guanine nucleotide-binding protein alpha-1 subunit | Oryza sativa subsp. japonica (Rice) | SS |
| P93163 | GPA2 | Guanine nucleotide-binding protein alpha-2 subunit | Glycine max (Soybean) (Glycine hispida) | SS |
| P49084 | GPA1 | Guanine nucleotide-binding protein alpha-1 subunit | Glycine max (Soybean) (Glycine hispida) | SS |
| O80462 | XLG1 | Extra-large guanine nucleotide-binding protein 1 | Arabidopsis thaliana (Mouse-ear cress) | PR |
| P18064 | GPA1 | Guanine nucleotide-binding protein alpha-1 subunit | Arabidopsis thaliana (Mouse-ear cress) | SS |
| P26981 | GPA1 | Guanine nucleotide-binding protein alpha-1 subunit | Solanum lycopersicum (Tomato) (Lycopersicon esculentum) | SS |
| 10 | 20 | 30 | 40 | 50 | 60 |
| MGCLGNSSKT | AEDQGVDEKE | RREANKKIEK | QLQKERLAYK | ATHRLLLLGA | GESGKSTIVK |
| 70 | 80 | 90 | 100 | 110 | 120 |
| QMRILHVNGS | NPEEKKQKIL | DIRKNVKDAI | VTIVSAMSTI | IPPVPLANPE | NQFRSDYIKS |
| 130 | 140 | 150 | 160 | 170 | 180 |
| IAPITDFEYS | QEFFDHVKKL | WDDEGVKACF | ERSNEYQLID | CAQYFLERID | SVSLVDYTPT |
| 190 | 200 | 210 | 220 | 230 | 240 |
| DQDLLRCRVL | TSGIFETRFQ | VDKVNFHMFD | VGGQRDERRK | WIQCFNDVTA | IIYVAACSSY |
| 250 | 260 | 270 | 280 | 290 | 300 |
| NMVIREDNNT | NRLRESLDLF | ESIWNNRWLR | TISIILFLNK | QDMLAEKVLA | GKSKIEDYFP |
| 310 | 320 | 330 | 340 | 350 | 360 |
| EYANYTVPED | ATPDAGEDPK | VTRAKFFIRD | LFLRISTATG | DGKHYCYPHF | TCAVDTENIR |
| 370 | 380 | ||||
| RVFNDCRDII | QRMHLKQYEL | L |