| Protein Name | G protein alpha subunit 1 |
|---|---|
| Organism | Arabidopsis thaliana |
| Gene ID | 817170 |
| Gene Symbol | GP ALPHA 1 |
| UniProt | P18064 (GPA1_ARATH), A0A178VY32 (A0A178VY32_ARATH) |
| Relationships |
Total Number of functionally related compound(s) :
42
Total Number of Articles : 54 |
Description |
G protein alpha subunit 1 |
| Gene Summary |
Encodes an alpha subunit of a heterotrimeric GTP-binding protein. The active GTP-bound form of GPA1 binds to the GTG1 and GTG2 abscisic acid (ABA) receptors and appears to affect their GTPase and GTP-binding activity, and hence, ABA binding abilities. GPA1 is a positive regulator in ABA-mediated inhibition of stomatal opening. Plants with recessive mutant alleles have complex phenotypes including: reduced brassinolide response, reduced cell divisions, round leaves, short hypocotyls. It is likely to be involved in the signaling events that trigger unfolded protein response-associated cell death. GPA1 is also involved in sugar signaling. |
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