ID A0A2U8FNJ6_9BURK Unreviewed; 216 AA.
AC A0A2U8FNJ6;
DT 12-SEP-2018, integrated into UniProtKB/TrEMBL.
DT 12-SEP-2018, sequence version 1.
DT 24-JAN-2024, entry version 14.
DE RecName: Full=Protein-methionine-sulfoxide reductase heme-binding subunit MsrQ {ECO:0000256|HAMAP-Rule:MF_01207};
DE AltName: Full=Flavocytochrome MsrQ {ECO:0000256|HAMAP-Rule:MF_01207};
GN Name=msrQ {ECO:0000256|HAMAP-Rule:MF_01207};
GN ORFNames=DEH84_02465 {ECO:0000313|EMBL:AWI52418.1};
OS Aquabacterium olei.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC Aquabacterium.
OX NCBI_TaxID=1296669 {ECO:0000313|EMBL:AWI52418.1, ECO:0000313|Proteomes:UP000244892};
RN [1] {ECO:0000313|EMBL:AWI52418.1, ECO:0000313|Proteomes:UP000244892}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NBRC 110486 {ECO:0000313|EMBL:AWI52418.1,
RC ECO:0000313|Proteomes:UP000244892};
RA Tang B., Chang J., Zhang L., Yang H.;
RT "complete genome sequence of Aquabacterium olei NBRC 110486.";
RL Submitted (MAY-2018) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Part of the MsrPQ system that repairs oxidized periplasmic
CC proteins containing methionine sulfoxide residues (Met-O), using
CC respiratory chain electrons. Thus protects these proteins from
CC oxidative-stress damage caused by reactive species of oxygen and
CC chlorine generated by the host defense mechanisms. MsrPQ is essential
CC for the maintenance of envelope integrity under bleach stress, rescuing
CC a wide series of structurally unrelated periplasmic proteins from
CC methionine oxidation. MsrQ provides electrons for reduction to the
CC reductase catalytic subunit MsrP, using the quinone pool of the
CC respiratory chain. {ECO:0000256|HAMAP-Rule:MF_01207}.
CC -!- COFACTOR:
CC Name=FMN; Xref=ChEBI:CHEBI:58210;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01207};
CC Note=Binds 1 FMN per subunit. {ECO:0000256|HAMAP-Rule:MF_01207};
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01207};
CC Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit.
CC {ECO:0000256|HAMAP-Rule:MF_01207};
CC -!- SUBUNIT: Heterodimer of a catalytic subunit (MsrP) and a heme-binding
CC subunit (MsrQ). {ECO:0000256|HAMAP-Rule:MF_01207}.
CC -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|HAMAP-Rule:MF_01207};
CC Multi-pass membrane protein {ECO:0000256|HAMAP-Rule:MF_01207}. Membrane
CC {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
CC -!- SIMILARITY: Belongs to the MsrQ family. {ECO:0000256|HAMAP-
CC Rule:MF_01207}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01207}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP029210; AWI52418.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2U8FNJ6; -.
DR KEGG; aon:DEH84_02465; -.
DR OrthoDB; 9788328at2; -.
DR Proteomes; UP000244892; Chromosome.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR GO; GO:0010181; F:FMN binding; IEA:UniProtKB-UniRule.
DR GO; GO:0020037; F:heme binding; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0030091; P:protein repair; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01207; MsrQ; 1.
DR InterPro; IPR013130; Fe3_Rdtase_TM_dom.
DR InterPro; IPR022837; MsrQ-like.
DR PANTHER; PTHR36964; PROTEIN-METHIONINE-SULFOXIDE REDUCTASE HEME-BINDING SUBUNIT MSRQ; 1.
DR PANTHER; PTHR36964:SF1; PROTEIN-METHIONINE-SULFOXIDE REDUCTASE HEME-BINDING SUBUNIT MSRQ; 1.
DR Pfam; PF01794; Ferric_reduct; 1.
PE 3: Inferred from homology;
KW Cell membrane {ECO:0000256|HAMAP-Rule:MF_01207};
KW Electron transport {ECO:0000256|HAMAP-Rule:MF_01207};
KW Flavoprotein {ECO:0000256|HAMAP-Rule:MF_01207};
KW FMN {ECO:0000256|HAMAP-Rule:MF_01207};
KW Heme {ECO:0000256|HAMAP-Rule:MF_01207};
KW Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01207};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|HAMAP-Rule:MF_01207};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01207};
KW Reference proteome {ECO:0000313|Proteomes:UP000244892};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|HAMAP-
KW Rule:MF_01207};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989, ECO:0000256|HAMAP-
KW Rule:MF_01207};
KW Transport {ECO:0000256|ARBA:ARBA00022448, ECO:0000256|HAMAP-Rule:MF_01207}.
FT TRANSMEM 24..48
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 90..106
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 126..147
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 159..176
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 188..204
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT DOMAIN 57..171
FT /note="Ferric oxidoreductase"
FT /evidence="ECO:0000259|Pfam:PF01794"
SQ SEQUENCE 216 AA; 24341 MW; 52DF6D2B64DAD8DF CRC64;
MSVMPAPALS FLNAWLVRPW MKPLLWAVCA VPAVALLIGA VVGSLGANPA EKLIRETGEW
ALRWLWLTLA ITPLRELASL PALVRFRRTL GVTTFVYAVL HLLSYAGFDK GWVLDDIVRD
VFKRNFILVG MLGFVVMLPL ALTSFNAAVR ALGGRRWQWL HRLTYVVAML GLLHFYLKKA
AKNDTDEVLV YAVILAVLFG WRVMRRGGIL AMWRVR
//
