| PTPN5 | 
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| Identifiers | 
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| Aliases | PTPN5, PTPSTEP, STEP, STEP61, protein tyrosine phosphatase, non-receptor type 5, protein tyrosine phosphatase non-receptor type 5 | 
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| External IDs | OMIM: 176879; MGI: 97807; HomoloGene: 8423; GeneCards: PTPN5; OMA:PTPN5 - orthologs | 
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| | Gene location (Mouse) | 
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 |  |  | Chr. | Chromosome 7 (mouse) | 
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 |  |  | Band | 7 B3|7 30.7 cM | Start | 46,727,543 bp | 
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 | End | 46,783,432 bp | 
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| | RNA expression pattern | 
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 | Bgee | | Human | Mouse (ortholog) | 
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 | | Top expressed in |  | endothelial cell
 middle temporal gyrus
 Brodmann area 23
 nucleus accumbens
 putamen
 primary visual cortex
 caudate nucleus
 external globus pallidus
 superior frontal gyrus
 postcentral gyrus
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 | | Top expressed in |  | olfactory tubercle
 superior frontal gyrus
 nucleus accumbens
 lateral septal nucleus
 globus pallidus
 primary visual cortex
 anterior amygdaloid area
 nucleus of stria terminalis
 medial dorsal nucleus
 lateral geniculate nucleus
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 |  | More reference expression data | 
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 | BioGPS |  | 
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| Wikidata | 
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Protein tyrosine phosphatase non-receptor type 5 is an enzyme that in humans is encoded by the PTPN5 gene.
Protein tyrosine phosphatase (PTP), non-receptor type 5, also known as STEP (STriatal-Enriched protein tyrosine Phosphatase), was the first brain-specific PTP discovered. The human STEP locus maps to chromosome 11p15.2-p15.1 and the murine STEP gene to chromosome 7B3-B5. The single STEP gene is alternatively spliced to produce several isoforms, the best characterized of which are the cytosolic STEP46 protein and the membrane-associated STEP61 protein.