STS2/TULA (UBASH3A) Antibody – Goat Polyclonal

This gene encodes one of two family members belonging to the T-cell ubiquitin ligand (TULA) family. Both family members can negatively regulate T-cell signaling. This family member can facilitate growth factor withdrawal-induced apoptosis in T cells, which may occur via its interaction with AIF, an apoptosis-inducing factor. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Aug 2011]

STS2: Interferes with CBL-mediated down-regulation and degradation of receptor-type tyrosine kinases. Promotes accumulation of activated target receptors, such as T-cell receptors, EGFR and PDGFRB, on the cell surface. Exhibits negligigle protein tyrosine phosphatase activity at neutral pH. May act as a dominant-negative regulator of UBASH3B-dependent dephosphorylation. May inhibit dynamin-dependent endocytic pathways by functionally sequestering dynamin via its SH3 domain. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Protein phosphatase, tyrosine (non-receptor)

Chromosomal Location of Human Ortholog: 21q22.3

Cellular Component: cytosol; nucleus

Molecular Function: protein binding

Biological Process: negative regulation of T cell receptor signaling pathway; regulation of cytokine production