GNAI3

Disease related genes, Human disease related genes, Plasma proteins

Intracellular

Cell type enhanced (Cone photoreceptor cells)

Low immune cell specificity

Low cell line specificity

Heterotrimeric G proteins are composed of 3 units; alpha, beta and gamma. The alpha subunit contains the guanine nucleotide binding site. GTP binding causes dissociation of the heterotrimer, liberating the individual subunits so that they can interact with downstream effector proteins. Forms a complex with CCDC88A/GIV and EGFR which leads to enhanced EGFR signaling and triggering of cell migration; ligand stimulation is required for recruitment of GNAI3 to the complex (PubMed:20462955). Interacts (inactive GDP-bound form) with CCDC88A/GIV (via GBA motif); the interaction leads to activation of GNAI3 (PubMed:19211784, PubMed:20462955). Interacts (inactive GDP-bound form) with CCDC88C/DAPLE (via GBA motif); the interaction leads to activation of GNAI3 (PubMed:26126266). Interacts (inactive GDP-bound form) with NUCB1 (via GBA motif) and NUCB2 (via GBA motif); the interaction leads to activation of GNAI3 (By similarity). Interacts (inactive GDP-bound form) with PLCD4 (via GBA motif); the interaction leads to activation of GNAI3 (PubMed:30194280). Interacts with INSR; the interaction is probably mediated by CCDC88A/GIV (PubMed:25187647). Interacts with GPSM1 (By similarity). Interacts (GDP-bound form) with GPSM2 (via GoLoco domains) (PubMed:22952234). Does not interact with RGS2 (PubMed:19478087). Interacts with RGS8 and RGS10; this strongly enhances the intrinsic GTPase activity (PubMed:8774883, PubMed:18434541). Interacts with RGS16; this strongly enhances the intrinsic GTPase activity (PubMed:19478087). Interacts with RGS12 (By similarity). Interacts (via active GTP- or inactive GDP-bound form) with RGS14 (By similarity).

Transducer