the crystal structure of the guanine-nucleotide-binding domain of p21 ( amino acids 1-166 ) complexed to the guanosine triphosphate analogue guanosine-5'- ( beta , gamma-imido ) triphosphate ( gppnp ) has been determined at a resolution of 2.6 a .
C0018328
guanine-nucleotide
C0018353
guanosine triphosphate