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A visceral-fat-associated SNP, rs11678490 of NGEF, was found in Korean men.
FGFR (show FGFR2 Proteins)-mediated phosphorylation of ephexin1 enhances the guanine nucleotide exchange activity toward RhoA (show RHOA Proteins) without affecting the activity to Rac1 or Cdc42 (show CDC42 Proteins).
An essential role is identified for rho guanine nucleotide exchange factor (RhoGEF) ephexin1 in the maturation of acetylcholine receptor clusters.
Acts as a guanine nucleotide exchange factor (GEF) which differentially activates the GTPases RHOA, RAC1 and CDC42. Plays a role in axon guidance regulating ephrin-induced growth cone collapse and dendritic spine morphogenesis. Upon activation by ephrin through EPHA4, the GEF activity switches toward RHOA resulting in its activation. Activated RHOA promotes cone retraction at the expense of RAC1- and CDC42-stimulated growth cone extension (By similarity).
neuronal guanine nucleotide exchange factor
, eph-interacting exchange protein
, transforming immortalised mammary epithelial sequence 2
, brain-enriched SH3-domain protein Besh3
, guanine nucleotide exchange factor