ID N6Y5E5_9RHOO Unreviewed; 226 AA.
AC N6Y5E5;
DT 26-JUN-2013, integrated into UniProtKB/TrEMBL.
DT 26-JUN-2013, sequence version 1.
DT 24-JAN-2024, entry version 41.
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=C664_17557 {ECO:0000313|EMBL:ENO75249.1};
OS Thauera sp. 63.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Rhodocyclales; Zoogloeaceae;
OC Thauera.
OX NCBI_TaxID=497321 {ECO:0000313|EMBL:ENO75249.1, ECO:0000313|Proteomes:UP000013007};
RN [1] {ECO:0000313|EMBL:ENO75249.1, ECO:0000313|Proteomes:UP000013007}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=63 {ECO:0000313|EMBL:ENO75249.1,
RC ECO:0000313|Proteomes:UP000013007};
RA Liu B., Shapleigh J.P., Frostegard A.H.;
RT "Draft Genome Sequences of 6 Strains from Genus Thauera.";
RL Submitted (SEP-2012) 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:ENO75249.1}.
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DR EMBL; AMXC01000035; ENO75249.1; -; Genomic_DNA.
DR RefSeq; WP_004291435.1; NZ_AMXC01000035.1.
DR AlphaFoldDB; N6Y5E5; -.
DR eggNOG; COG2717; Bacteria.
DR OrthoDB; 9788328at2; -.
DR Proteomes; UP000013007; 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 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 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..35
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 55..72
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 84..103
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 123..143
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 155..172
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT TRANSMEM 178..198
FT /note="Helical"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01207"
FT DOMAIN 53..167
FT /note="Ferric oxidoreductase"
FT /evidence="ECO:0000259|Pfam:PF01794"
SQ SEQUENCE 226 AA; 25763 MW; BB34223606F03B5B CRC64;
MPTFLRAPSG AQIALIKAVV FLICLLPALN LALGWYEDAL GANPIETITR ASGEWTLRFL
LITLAVTPLR RYTGMHWLLR LRRMLGLFAF AYGAAHLTTY LWLDQFFDWQ AIANDILERP
FITVGFAAFV LLIPLAATSN SFAIRKLGGR RWQSLHRSSY AIAILGVVHF WWLVKADLLE
PLVYALILAV LLGLRAWWRE LERRRQLSVP PPAKHLERPV IRIVPK
//
