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Database: UniProt
Entry: K9TRW1_9CYAN
LinkDB: K9TRW1_9CYAN
Original site: K9TRW1_9CYAN 
ID   K9TRW1_9CYAN            Unreviewed;       133 AA.
AC   K9TRW1;
DT   06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT   06-MAR-2013, sequence version 1.
DT   24-JAN-2024, entry version 50.
DE   RecName: Full=Peptide methionine sulfoxide reductase MsrB {ECO:0000256|HAMAP-Rule:MF_01400};
DE            EC=1.8.4.12 {ECO:0000256|HAMAP-Rule:MF_01400};
DE   AltName: Full=Peptide-methionine (R)-S-oxide reductase {ECO:0000256|HAMAP-Rule:MF_01400};
GN   Name=msrB {ECO:0000256|HAMAP-Rule:MF_01400};
GN   ORFNames=Oscil6304_5254 {ECO:0000313|EMBL:AFY84744.1};
OS   Oscillatoria acuminata PCC 6304.
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC   Oscillatoriales; Oscillatoriaceae; Oscillatoria.
OX   NCBI_TaxID=56110 {ECO:0000313|EMBL:AFY84744.1, ECO:0000313|Proteomes:UP000010367};
RN   [1] {ECO:0000313|EMBL:AFY84744.1, ECO:0000313|Proteomes:UP000010367}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=PCC 6304 {ECO:0000313|EMBL:AFY84744.1,
RC   ECO:0000313|Proteomes:UP000010367};
RG   US DOE Joint Genome Institute;
RA   Gugger M., Coursin T., Rippka R., Tandeau De Marsac N., Huntemann M.,
RA   Wei C.-L., Han J., Detter J.C., Han C., Tapia R., Davenport K.,
RA   Daligault H., Erkkila T., Gu W., Munk A.C.C., Teshima H., Xu Y., Chain P.,
RA   Chen A., Krypides N., Mavromatis K., Markowitz V., Szeto E., Ivanova N.,
RA   Mikhailova N., Ovchinnikova G., Pagani I., Pati A., Goodwin L., Peters L.,
RA   Pitluck S., Woyke T., Kerfeld C.;
RT   "Finished chromosome of genome of Oscillatoria acuminata PCC 6304.";
RL   Submitted (JUN-2012) 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;
CC         Evidence={ECO:0000256|ARBA:ARBA00001795, ECO:0000256|HAMAP-
CC         Rule:MF_01400};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000256|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:0000256|HAMAP-Rule:MF_01400};
CC   -!- SIMILARITY: Belongs to the MsrB Met sulfoxide reductase family.
CC       {ECO:0000256|HAMAP-Rule:MF_01400}.
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DR   EMBL; CP003607; AFY84744.1; -; Genomic_DNA.
DR   RefSeq; WP_015151356.1; NC_019693.1.
DR   AlphaFoldDB; K9TRW1; -.
DR   STRING; 56110.Oscil6304_5254; -.
DR   KEGG; oac:Oscil6304_5254; -.
DR   PATRIC; fig|56110.3.peg.6436; -.
DR   eggNOG; COG0229; Bacteria.
DR   HOGENOM; CLU_031040_8_5_3; -.
DR   InParanoid; K9TRW1; -.
DR   OrthoDB; 4174719at2; -.
DR   Proteomes; UP000010367; 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 B1; 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 {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW   Rule:MF_01400};
KW   Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW   Rule:MF_01400}; Reference proteome {ECO:0000313|Proteomes:UP000010367};
KW   Zinc {ECO:0000256|ARBA:ARBA00022833, ECO:0000256|HAMAP-Rule:MF_01400}.
FT   DOMAIN          9..131
FT                   /note="MsrB"
FT                   /evidence="ECO:0000259|PROSITE:PS51790"
FT   ACT_SITE        120
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
FT   BINDING         48
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
FT   BINDING         51
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
FT   BINDING         97
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
FT   BINDING         100
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01400"
SQ   SEQUENCE   133 AA;  15088 MW;  7D15CF66B8D67FB4 CRC64;
     MVQKIQKSES EWKEQLTPEQ FKVARKKGTE RAFTGAYHDN KEKGVYKCVC CGTELFSSQT
     KFDSGTGWPS FWSPIQEGNV AEEEDRALFM RRTEVLCANC DAHLGHVFPD GPKPTGLRYC
     INSASLNFEK VED
//
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