ID A0A2P8F9K0_9RHOB Unreviewed; 199 AA.
AC A0A2P8F9K0;
DT 23-MAY-2018, integrated into UniProtKB/TrEMBL.
DT 23-MAY-2018, sequence version 1.
DT 24-JAN-2024, entry version 15.
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=CLV88_111136 {ECO:0000313|EMBL:PSL18390.1};
OS Shimia abyssi.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodobacterales;
OC Roseobacteraceae.
OX NCBI_TaxID=1662395 {ECO:0000313|EMBL:PSL18390.1, ECO:0000313|Proteomes:UP000240418};
RN [1] {ECO:0000313|EMBL:PSL18390.1, ECO:0000313|Proteomes:UP000240418}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 100673 {ECO:0000313|EMBL:PSL18390.1,
RC ECO:0000313|Proteomes:UP000240418};
RA Goeker M.;
RT "Genomic Encyclopedia of Archaeal and Bacterial Type Strains, Phase II
RT (KMG-II): from individual species to whole genera.";
RL Submitted (MAR-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: 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:PSL18390.1}.
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; PYGJ01000011; PSL18390.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2P8F9K0; -.
DR OrthoDB; 9788328at2; -.
DR Proteomes; UP000240418; Unassembled WGS sequence.
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 InterPro; IPR034804; SQR/QFR_C/D.
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.
DR SUPFAM; SSF81343; Fumarate reductase respiratory complex transmembrane subunits; 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:UP000240418};
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 12..33
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 53..70
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 82..103
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 115..132
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 152..170
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 176..192
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT DOMAIN 57..160
FT /note="Ferric oxidoreductase"
FT /evidence="ECO:0000259|Pfam:PF01794"
SQ SEQUENCE 199 AA; 22668 MW; 25260F3F536A870E CRC64;
MIDLLNAAAR KVPSWVLYIV AALYPTFLFY QGLTGGLGVD PVKAMEHEMG RKGLQVLILT
LSITPLRRYL GVNFMKFRRA TGLIAFFYIG LHLLVWLVLD VQIPSEIWAD ILKRPYVTIG
MVGFIVLLPL AITSNNWSVR RLGRNWHVLH KLTYVAIVLG AVHFLMLAKG FQYEPIIYLV
VVAFLLALRL IPRRRLVRA
//
