lymphocyte-specific protein tyrosine kinase

Lymphocyte-specific protein tyrosine kinase (LCK) is an enzyme found primarily in immune cells called lymphocytes, which include T cells. It plays a key role in activating these cells by helping them respond to threats like infections or cancer. LCK does this by adding phosphate groups to specific proteins, which triggers signals that lead to immune cell growth and activation. Proper function of LCK is essential for a healthy immune response, while abnormalities can contribute to immune system disorders or cancers.