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MSRB_THEVB
ID   MSRB_THEVB              Reviewed;         135 AA.
AC   Q8DJK9;
DT   16-JUN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 109.
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}; OrderedLocusNames=tlr1214;
OS   Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1).
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Thermosynechococcaceae;
OC   Thermosynechococcus.
OX   NCBI_TaxID=197221;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-2133 / IAM M-273 / BP-1;
RX   PubMed=12240834; DOI=10.1093/dnares/9.4.123;
RA   Nakamura Y., Kaneko T., Sato S., Ikeuchi M., Katoh H., Sasamoto S.,
RA   Watanabe A., Iriguchi M., Kawashima K., Kimura T., Kishida Y., Kiyokawa C.,
RA   Kohara M., Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takeuchi C., Yamada M., Tabata S.;
RT   "Complete genome structure of the thermophilic cyanobacterium
RT   Thermosynechococcus elongatus BP-1.";
RL   DNA Res. 9:123-130(2002).
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; BA000039; BAC08766.1; -; Genomic_DNA.
DR   RefSeq; NP_682004.1; NC_004113.1.
DR   RefSeq; WP_011057056.1; NC_004113.1.
DR   AlphaFoldDB; Q8DJK9; -.
DR   SMR; Q8DJK9; -.
DR   STRING; 197221.22294938; -.
DR   EnsemblBacteria; BAC08766; BAC08766; BAC08766.
DR   KEGG; tel:tlr1214; -.
DR   PATRIC; fig|197221.4.peg.1278; -.
DR   eggNOG; COG0229; Bacteria.
DR   OMA; DEQWRAE; -.
DR   OrthoDB; 1650261at2; -.
DR   Proteomes; UP000000440; 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   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   PANTHER; PTHR10173; PTHR10173; 1.
DR   Pfam; PF01641; SelR; 1.
DR   SUPFAM; SSF51316; SSF51316; 1.
DR   TIGRFAMs; TIGR00357; TIGR00357; 1.
DR   PROSITE; PS51790; MSRB; 1.
PE   3: Inferred from homology;
KW   Metal-binding; Oxidoreductase; Reference proteome; Zinc.
FT   CHAIN           1..135
FT                   /note="Peptide methionine sulfoxide reductase MsrB"
FT                   /id="PRO_0000140311"
FT   DOMAIN          8..130
FT                   /note="MsrB"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT   ACT_SITE        119
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT   BINDING         47
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT   BINDING         50
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT   BINDING         96
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
FT   BINDING         99
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01126"
SQ   SEQUENCE   135 AA;  15087 MW;  68CBA46572BAAE59 CRC64;
     MTKVVKTDAE WQAQLTPEQY YVTRKKGTER AFTGCYWNNK KPGLYSCVCC GTPLFRSETK
     YDSGTGWPSF WQPLDPNNIR MERDLSHGMV RTEVLCAVCD AHLGHVFEDG PPPTGLRYCI
     NSAALAFVPE SAASS
 
 
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