jak1 Antibody – Mouse Monoclonal

Function: Tyrosine kinase of the non-receptor type. Appears to be required in early development for specific cell migrations (epiboly), expression of homeobox protein goosecoid and formation of anterior structures. Ref.1

Catalytic activity: ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate.

Subcellular location: Endomembrane system; Peripheral membrane protein

By similarity. Note: Wholly intracellular, possibly membrane associated

Developmental stage: Present in the unfertilized egg through to the blastula stage where it is distributed uniformly. Levels drop rapidly at four hours development, remain very low until 10 hours, then gradually increase from 12 hours with a rapid increase at 48 hours. At 48 hours it is concentrated in the region of the gill arches. Also present in the adult. Ref.1

Domain: Possesses two phosphotransferase domains. The second one probably contains the catalytic domain, while the presence of slight differences suggest a different role for domain 1.

Sequence similarities: Belongs to the protein kinase superfamily. Tyr protein kinase family. JAK subfamily.Contains 1 FERM domain.Contains 1 protein kinase domain.Contains 1 SH2 domain.