Overview:

PTPN7 gene is preferentially expressed in a variety of hematopoietic cells, and is an early response gene in lymphokine stimulated cells (1). The noncatalytic N-terminus of this PTP can interact with MAP kinases and negatively regulates ERK2 and p38 MAP-kinases activity (2). The PTPN7 was shown to be involved in the regulation of T cell antigen receptor (TCR) signaling, which was thought to function through dephosphorylating the molecules related to MAP kinase pathway (3).

Gene Aliases:

LC-PTP, LPTP, HEPTP, PTPNI, BPTP-4

Genbank Number:

NM_002832

References:

1. Adachi, M. et al: Protein-tyrosine phosphatase expression in pre-B cell NALM-6. Cancer Res. 52: 737-740, 1992.

2. Pettiford, S M. et al: The MAP-kinase ERK2 is a specific substrate of the protein tyrosine phosphatase HePTP. Oncogene. 2000 Feb 17;19(7):858-69.

3. Oh-hora, M. et al: Direct .suppression of TCR-mediated activation of extracellular signal-regulated kinase by leukocyte protein tyrosine phosphatase, a tyrosine-specific phosphatase. J Immunol. 1999 Aug 1;163(3):1282-8.