OBSOLETE. Catalysis of the reaction: GTP + H2O = GDP + phosphate. An intrinsic activity of alpha-tubulin involved in tubulin folding, division plane formation in prokaryotic cells and others.
Source:EC:3.6.5.6,
MetaCyc:3.6.1.51-RXN
Comment
This term was made obsolete because it represents a gene product.