Anti-HPK1 antibodies enable researchers to detect and measure the HPK1 antigen in biological samples. This target is a reported synonym of the MAP4K1 gene, which encodes mitogen-activated protein kinase kinase kinase kinase 1. This protein is known to function in cell proliferation and intracellular signal transduction, among other biological roles. The human version of HPK1 has a canonical amino acid length of 833 residues and a protein mass of 91.3 kilodaltons, although 2 isoforms have been identified. It is reported to be notably expressed in the rectum, lymph node, colon, bone marrow, and appendix. HPK1 is a member of the STE Ser/Thr protein kinase protein family. ELISA is a widely used application for the HPK1 antibodies listed below. In addition, Western Blot is also a common application.