UniProt functional annotation for P54830

UniProt code: P54830.

Organism: Mus musculus (Mouse).
Taxonomy: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus.
 
Function: May regulate the activity of several effector molecules involved in synaptic plasticity and neuronal cell survival, including MAPKs, Src family kinases and NMDA receptors. {ECO:0000250}.
 
Catalytic activity: Reaction=H2O + O-phospho-L-tyrosyl-[protein] = L-tyrosyl-[protein] + phosphate; Xref=Rhea:RHEA:10684, Rhea:RHEA-COMP:10136, Rhea:RHEA- COMP:10137, ChEBI:CHEBI:15377, ChEBI:CHEBI:43474, ChEBI:CHEBI:46858, ChEBI:CHEBI:82620; EC=3.1.3.48; Evidence={ECO:0000255|PROSITE- ProRule:PRU10044};
Subcellular location: [Isoform STEP61]: Endoplasmic reticulum membrane; Multi-pass membrane protein.
Subcellular location: [Isoform STEP46]: Cytoplasm.
Tissue specificity: STEP20 is expressed only in the CNS.
Ptm: Phosphorylation at Ser-221 by PKA deactivates PTPN5. Phosphorylation at Thr-231 and Ser-244 by MAPKs stabilizes the phosphatase, dephosphorylation of these sites results in ubiquitin- mediated degradation of the active phosphatase (By similarity). {ECO:0000250}.
Miscellaneous: [Isoform STEP38]: Lacks the catalytic domain. {ECO:0000305}.
Miscellaneous: [Isoform STEP20]: Lacks the catalytic domain. {ECO:0000305}.
Similarity: Belongs to the protein-tyrosine phosphatase family. Non- receptor class subfamily. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.