GIT1

Plasma proteins

Intracellular

Cell type enhanced (Late spermatids, Early spermatids)

Low immune cell specificity

Low cell line specificity

Forms homodimers and possibly oligomers (By similarity). May forms heterooligomers with GIT2 (By similarity). Interacts with G protein-coupled receptor kinases, including GRK2, GRK3, GRK5 and GRK6 (By similarity). Interacts with PPFIA1, PPFIA2 and PPFIA4 (By similarity). Interacts with GRIP1 and forms a ternary complex with PPFIA1 and GRIP1 (By similarity). Directly interacts with ARHGEF7/beta-PIX, forming in vitro a heptameric complex made of a GIT1 dimer and an ARHGEF7 trimer (PubMed:10896954, 27012601). Directly interacts with PXN/paxillin; this interaction is enhanced in the presence of ARHGEF7 (PubMed:10896954, 10938112, 27012601). Directly interacts (via C-terminus) with TGFB1I1/Hic-5 (via LD motif 3) (PubMed:12153727). Directly interacts with PTK2/FAK1 (By similarity). May interact with PTK2B/PYK2; this interaction may be indirect (By similarity). Interacts with AMPA receptors GRIA2/3 (By similarity). Directly interacts with protein Piccolo/PCLO (By similarity). Forms a complex with Ephrin-B1/EFNB1 and NCK2/GRB4 (via SH2); this interaction is important for spine morphogenesis and synapse formation. Interaction with NCK2 is transient and depends upon GIT1 phosphorylation at Tyr-383 (By similarity). Interacts with GRIN3A/GluN3A (via C-terminus); this interaction competes with GIT1 interaction with ARHGEF7 and limits synaptic localization of GIT1 (By similarity). Interacts with IKBKG/NEMO in resting bone mesenchymal stem cells, as well as in TNF-stimulated cells; this interaction may increase IKBKG affinity for 'Lys-63'-linked polyubiquitin chains (PubMed:31502302). Interacts with GABA(A) receptors, including GABRB3 and GABRG2 (By similarity). Interacts with SCRIB (PubMed:15182672, 19041750). Interacts (via N- and C-terminus) with ENTR1/SDCCAG3 (via N-terminus); this interaction is direct (PubMed:23108400). May form a tripartite complex with ENTR1 and PTPN13 (PubMed:23108400). Interacts with YWHAZ (By similarity). Interacts with PAK1 (PubMed:27012601). Interacts with PAK3 (PubMed:10896954). Directly interacts (via N-terminus) with gamma-tubulin (PubMed:27012601). Interacts with MAPK1 and MAPK3; this interaction is required for MAPK1/3 recruitment to focal adhesions (By similarity).

GTPase activation