Phosphorylated Proto-Oncogene Tyrosine-Protein Kinase Src

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

**Definition:** A post-translationally modified form of proto-oncogene tyrosine-protein kinase Src where one or more serine, threonine and/or the tyrosine residues are phosphorylated. Phosphorylation of the tyrosine at residue position 530 inhibits Src kinase activity, while phosphorylation of the tyrosine at residue position 419 results in Src activation.

**Synonyms:** - Phospho-Proto-Oncogene Tyrosine-Protein Kinase Src - Phospho-Src - Phosphorylated SRC