p21 RAS Protein

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

**Definition:** Cellular protein encoded by the RAS genes. The protein has intrinsic GTPase activity and is involved in transmembrane signal transduction as a guanine nucleotide binding protein. Elevated levels of p21 c-ras have been associated with neoplasia.

**Synonyms:** - Transforming Protein p21 - p21 - p21 RAS Family Protein - p21(RAS) - p21ras