Nucleotide binding to the G12V-mutant of Cdc42 investigated by X-ray diffraction and fluorescence spectroscopy: two different nucleotide states in one crystal.
Rudolph, M.G., Wittinghofer, A., Vetter, I.R.(1999) Protein Sci 8: 778-787
- PubMed: 10211824 
- DOI: 10.1110/ps.8.4.778
- Primary Citation of Related Structures:  
1A4R - PubMed Abstract: 
The 2.5 A crystal structure of the full length human placental isoform of the Gly12 to Val mutant Cdc42 protein (Cdc42(G12V)) bound to both GDP/Mg2+ and GDPNH2 (guanosine-5'-diphospho-beta-amidate) is reported. The crystal contains two molecules in the asymmetric unit, of which one has bound GDP/Mg2+, while the other has bound GDPNH2 without a Mg2+ ion ...