ID S2ENT2_9ARCH Unreviewed; 133 AA.
AC S2ENT2;
DT 18-SEP-2013, integrated into UniProtKB/TrEMBL.
DT 18-SEP-2013, sequence version 1.
DT 27-MAR-2024, entry version 35.
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 ECO:0000313|EMBL:EPA06112.1};
GN ORFNames=BG20_I0641 {ECO:0000313|EMBL:EPA06112.1};
OS Candidatus Nitrosarchaeum limnium BG20.
OC Archaea; Nitrososphaerota; Nitrososphaeria; Nitrosopumilales;
OC Nitrosopumilaceae; Nitrosarchaeum.
OX NCBI_TaxID=859192 {ECO:0000313|EMBL:EPA06112.1, ECO:0000313|Proteomes:UP000014065};
RN [1] {ECO:0000313|EMBL:EPA06112.1, ECO:0000313|Proteomes:UP000014065}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BG20 {ECO:0000313|EMBL:EPA06112.1,
RC ECO:0000313|Proteomes:UP000014065};
RX PubMed=22461554; DOI=10.1128/JB.00007-12;
RA Mosier A.C., Allen E.E., Kim M., Ferriera S., Francis C.A.;
RT "Genome Sequence of "Candidatus Nitrosoarchaeum limnia" BG20, a Low-
RT Salinity Ammonia-Oxidizing Archaeon from the San Francisco Bay Estuary.";
RL J. Bacteriol. 194:2119-2120(2012).
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EPA06112.1}.
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DR EMBL; AHJG01000099; EPA06112.1; -; Genomic_DNA.
DR RefSeq; WP_010190831.1; NZ_AHJG01000099.1.
DR AlphaFoldDB; S2ENT2; -.
DR PATRIC; fig|859192.6.peg.679; -.
DR OrthoDB; 5961at2157; -.
DR Proteomes; UP000014065; Unassembled WGS sequence.
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 {ECO:0000256|HAMAP-Rule:MF_01400};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_01400}; Reference proteome {ECO:0000313|Proteomes:UP000014065};
KW Zinc {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; 15176 MW; AB0AD3461B6A9E62 CRC64;
MTEKIVKSTK EWKEVLTPDQ YEVCINKGTE PPFSGKYYNT KETGTYKCSC CGEELFKSDT
KYDSGSGWPS FWKPLADEKI EYITDDSYGM IRTEVNCKKC GAHLGHVFDD GPKPTNLRYC
INSVSLELDK NDE
//
