GTPase

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Proteins that hydrolyze guanine triphosphate to yield guanine diphosphate. This is a class of proteins that belongs to a family of high energy phosphate hydrolases. Members of this family play major roles in biological signal transduction pathways.

**Synonyms:** - Guanosinetriphosphatase