Hck Proteins and Enzymes

The 60-kilodalton protein encoded by HCK resembles the product of the proto-oncogene c-src and is therefore likely to be a peripheral membrane protein (1). Protein-tyrosine kinase Hck is primarily expressed in hematopoietic cells, particularly granulocytes. Protein-tyrosine kinases are implicated in the control of cell growth by virtue of their frequent appearance as products of retroviral oncogenes and as components of growth factor receptors (2). Tyrosine kinases of the Src family are ...