rho gdi made a complex with the gdp-bound form of rhob p20 with a molar ratio of 1:1 but not with the gtp gamma s-bound or guanine nucleotide-free form . rho gdi did not stimulate the gtpase activity of rhob p20 and by itself showed neither gtp gamma s-binding nor gtpase activity . rho gdi was equally active for rhoa p21 and rhob p20 but was inactive for other ras p21/ras p21-like g proteins including c-ha-ras p21 , smg p25a , and smg p21 .
C0018340
gdp
C0018328
guanine nucleotide