ID MSRB_KLEP7 Reviewed; 137 AA.
AC A6T7R0;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 21-AUG-2007, sequence version 1.
DT 27-MAR-2024, entry version 92.
DE RecName: Full=Peptide methionine sulfoxide reductase MsrB {ECO:0000255|HAMAP-Rule:MF_01400};
DE EC=1.8.4.12 {ECO:0000255|HAMAP-Rule:MF_01400};
DE AltName: Full=Peptide-methionine (R)-S-oxide reductase {ECO:0000255|HAMAP-Rule:MF_01400};
GN Name=msrB {ECO:0000255|HAMAP-Rule:MF_01400};
GN OrderedLocusNames=KPN78578_11700; ORFNames=KPN_01198;
OS Klebsiella pneumoniae subsp. pneumoniae (strain ATCC 700721 / MGH 78578).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX NCBI_TaxID=272620;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700721 / MGH 78578;
RG The Klebsiella pneumonia Genome Sequencing Project;
RA McClelland M., Sanderson E.K., Spieth J., Clifton W.S., Latreille P.,
RA Sabo A., Pepin K., Bhonagiri V., Porwollik S., Ali J., Wilson R.K.;
RL Submitted (SEP-2006) to the EMBL/GenBank/DDBJ databases.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=[thioredoxin]-disulfide + H2O + L-methionyl-[protein] =
CC [thioredoxin]-dithiol + L-methionyl-(R)-S-oxide-[protein];
CC Xref=Rhea:RHEA:24164, Rhea:RHEA-COMP:10698, Rhea:RHEA-COMP:10700,
CC Rhea:RHEA-COMP:12313, Rhea:RHEA-COMP:12314, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:16044, ChEBI:CHEBI:29950, ChEBI:CHEBI:45764,
CC ChEBI:CHEBI:50058; EC=1.8.4.12; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_01400};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01400};
CC Note=Binds 1 zinc ion per subunit. The zinc ion is important for the
CC structural integrity of the protein. {ECO:0000255|HAMAP-Rule:MF_01400};
CC -!- SIMILARITY: Belongs to the MsrB Met sulfoxide reductase family.
CC {ECO:0000255|HAMAP-Rule:MF_01400}.
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DR EMBL; CP000647; ABR76631.1; -; Genomic_DNA.
DR RefSeq; WP_002901246.1; NC_009648.1.
DR AlphaFoldDB; A6T7R0; -.
DR SMR; A6T7R0; -.
DR STRING; 272620.KPN_01198; -.
DR PaxDb; 272620-KPN_01198; -.
DR EnsemblBacteria; ABR76631; ABR76631; KPN_01198.
DR KEGG; kpn:KPN_01198; -.
DR HOGENOM; CLU_031040_8_5_6; -.
DR Proteomes; UP000000265; Chromosome.
DR GO; GO:0033743; F:peptide-methionine (R)-S-oxide reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030091; P:protein repair; IEA:InterPro.
DR GO; GO:0006979; P:response to oxidative stress; IEA:InterPro.
DR Gene3D; 2.170.150.20; Peptide methionine sulfoxide reductase; 1.
DR HAMAP; MF_01400; MsrB; 1.
DR InterPro; IPR028427; Met_Sox_Rdtase_MsrB.
DR InterPro; IPR002579; Met_Sox_Rdtase_MsrB_dom.
DR InterPro; IPR011057; Mss4-like_sf.
DR NCBIfam; TIGR00357; peptide-methionine (R)-S-oxide reductase MsrB; 1.
DR PANTHER; PTHR10173; METHIONINE SULFOXIDE REDUCTASE; 1.
DR PANTHER; PTHR10173:SF52; METHIONINE-R-SULFOXIDE REDUCTASE B3; 1.
DR Pfam; PF01641; SelR; 1.
DR SUPFAM; SSF51316; Mss4-like; 1.
DR PROSITE; PS51790; MSRB; 1.
PE 3: Inferred from homology;
KW Metal-binding; Oxidoreductase; Zinc.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000250"
FT CHAIN 2..137
FT /note="Peptide methionine sulfoxide reductase MsrB"
FT /id="PRO_1000068273"
FT DOMAIN 7..129
FT /note="MsrB"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT ACT_SITE 118
FT /note="Nucleophile"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT BINDING 46
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT BINDING 49
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT BINDING 95
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT BINDING 98
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
SQ SEQUENCE 137 AA; 15292 MW; 1D6ECACED2F665CC CRC64;
MANKPTPEEL KNGLSEMQFY VTQHHGTEPP FTGRLLHNKK NGVYHCLVCD APLFNSQTKY
DSGCGWPSFY EPVSAEAIRY LTDNSHGMQR IEIRCGNCDA HLGHVFPDGP QPTGERYCVN
SASLSFTDEQ NGEQIKG
//
