FEATURES

FAMILY

DESCRIPTION

Also known as GNAI2_HUMAN, GNAI2, GNAI2B. Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G(i) proteins are involved in hormonal regulation of adenylate cyclase: they inhibit the cyclase in response to beta-adrenergic stimuli. May play a role in cell division., Regulates the cell surface density of dopamine receptors DRD2 by sequestrating them as an intracellular pool. G proteins are composed of 3 units; alpha, beta and gamma. The alpha chain contains the guanine nucleotide binding site. Interacts with GPSM1 (By similarity). Interacts with RGS12 and RGS14 (By similarity). Interacts with UNC5B (PubMed:12359238). Interacts (inactive GDP-bound form) with NUCB1 (via GBA motif); the interaction leads to activation of GNAI3 (By similarity). Interacts (inactive GDP-bound form) with CCDC88C/DAPLE (via GBA motif) (PubMed:26126266). Interacts (inactive GDP-bound form) with CCDC8A/GIV (via GBA motif) (PubMed:19211784).

EXTERNAL LINKS

GNAI2

Guanine nucleotide-binding protein G(i) subunit alpha-2

GNAI2

Molecular Synopsis