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- Table of Contents
Facts about Tyrosine-protein kinase ZAP-70.
Contributes also into the activation and development of primary B-lymphocytes. When antigen presenting cells (APC) trigger T-cell receptor (TCR), a serie of phosphorylations lead to the recruitment of ZAP70 into the doubly phosphorylated TCR component CD247/CD3Z through ITAM motif in the plasma membrane.
Human | |
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Gene Name: | ZAP70 |
Uniprot: | P43403 |
Entrez: | 7535 |
Belongs to: |
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protein kinase superfamily |
70 kDa zeta-associated protein; EC 2.7.10; EC 2.7.10.2; mrtle; mur; SRK; SRKFLJ17679; STD; STDFLJ17670; Syk-related tyrosine kinase; tyrosine-protein kinase ZAP-70; TZK; ZAP70; ZAP-70; zeta-chain (TCR) associated protein kinase (70 kD); zeta-chain (TCR) associated protein kinase 70kDa; zeta-chain associated protein kinase, 70kD
Mass (kDA):
69.872 kDA
Human | |
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Location: | 2q11.2 |
Sequence: | 2; NC_000002.12 (97712030..97744327) |
Expressed in T- and natural killer cells. Also present in early thymocytes and pro/pre B-cells.
Cytoplasm. Cell membrane; Peripheral membrane protein. In quiescent T-lymphocytes, it is cytoplasmic. Upon TCR activation, it is recruited at the plasma membrane by interacting with CD247/CD3Z. Colocalizes together with RHOH in the immunological synapse. RHOH is required for its proper localization to the cell membrane and cytoskeleton fractions in the thymocytes (By similarity).
PMID: 1423621 by Chan A.C., et al. ZAP-70: a 70 kd protein-tyrosine kinase that associates with the TCR zeta chain.
PMID: 14985102 by Kuroyama H., et al. Identification of a novel isoform of ZAP-70, truncated ZAP kinase.