ID   PTPB_STAAB              Reviewed;         139 AA.
AC   Q2YUL3;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   20-DEC-2005, sequence version 1.
DT   03-AUG-2022, entry version 89.
DE   RecName: Full=Low molecular weight protein-tyrosine-phosphatase PtpB;
DE            EC=3.1.3.48;
DE   AltName: Full=Phosphotyrosine phosphatase B;
DE            Short=PTPase B;
GN   Name=ptpB; OrderedLocusNames=SAB1999c;
OS   Staphylococcus aureus (strain bovine RF122 / ET3-1).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=273036;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=bovine RF122 / ET3-1;
RX   PubMed=17971880; DOI=10.1371/journal.pone.0001120;
RA   Herron-Olson L., Fitzgerald J.R., Musser J.M., Kapur V.;
RT   "Molecular correlates of host specialization in Staphylococcus aureus.";
RL   PLoS ONE 2:E1120-E1120(2007).
CC   -!- FUNCTION: Dephosphorylates the phosphotyrosine-containing proteins.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=H2O + O-phospho-L-tyrosyl-[protein] = L-tyrosyl-[protein] +
CC         phosphate; Xref=Rhea:RHEA:10684, Rhea:RHEA-COMP:10136, Rhea:RHEA-
CC         COMP:10137, ChEBI:CHEBI:15377, ChEBI:CHEBI:43474, ChEBI:CHEBI:46858,
CC         ChEBI:CHEBI:82620; EC=3.1.3.48;
CC   -!- SIMILARITY: Belongs to the low molecular weight phosphotyrosine protein
CC       phosphatase family. {ECO:0000305}.
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DR   EMBL; AJ938182; CAI81688.1; -; Genomic_DNA.
DR   RefSeq; WP_000697334.1; NC_007622.1.
DR   AlphaFoldDB; Q2YUL3; -.
DR   SMR; Q2YUL3; -.
DR   KEGG; sab:SAB1999c; -.
DR   HOGENOM; CLU_071415_1_2_9; -.
DR   OMA; AFFPQKA; -.
DR   GO; GO:0004725; F:protein tyrosine phosphatase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006470; P:protein dephosphorylation; IEA:InterPro.
DR   InterPro; IPR023485; Ptyr_pPase.
DR   InterPro; IPR036196; Ptyr_pPase_sf.
DR   InterPro; IPR017867; Tyr_phospatase_low_mol_wt.
DR   Pfam; PF01451; LMWPc; 1.
DR   PRINTS; PR00719; LMWPTPASE.
DR   SMART; SM00226; LMWPc; 1.
DR   SUPFAM; SSF52788; SSF52788; 1.
PE   3: Inferred from homology;
KW   Hydrolase; Protein phosphatase.
FT   CHAIN           1..139
FT                   /note="Low molecular weight protein-tyrosine-phosphatase
FT                   PtpB"
FT                   /id="PRO_0000300671"
FT   ACT_SITE        7
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000250|UniProtKB:P11064"
FT   ACT_SITE        13
FT                   /evidence="ECO:0000250|UniProtKB:P11064"
FT   ACT_SITE        111
FT                   /note="Proton donor"
FT                   /evidence="ECO:0000250|UniProtKB:P11064"
SQ   SEQUENCE   139 AA;  15788 MW;  63EB2C0E2A53EA5B CRC64;
     MKILFVCTGN TCRSPLAESI AKEVMPNHQF ESRGIFAVNN QGVSNYVEDL VEEHHLAETT
     LSQQFTEADL KADIILTMSY SHKELIEAHF GLQNHVFTLH EYVKEAGEVI DPYGGTKEMY
     VHTYEELVSL ILKLKDIIC