ID   AZOR_METC4              Reviewed;         203 AA.
AC   B7KYE7;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 69.
DE   RecName: Full=FMN-dependent NADH:quinone oxidoreductase {ECO:0000255|HAMAP-Rule:MF_01216};
DE            EC=1.6.5.- {ECO:0000255|HAMAP-Rule:MF_01216};
DE   AltName: Full=Azo-dye reductase {ECO:0000255|HAMAP-Rule:MF_01216};
DE   AltName: Full=FMN-dependent NADH-azo compound oxidoreductase {ECO:0000255|HAMAP-Rule:MF_01216};
DE   AltName: Full=FMN-dependent NADH-azoreductase {ECO:0000255|HAMAP-Rule:MF_01216};
DE            EC=1.7.1.17 {ECO:0000255|HAMAP-Rule:MF_01216};
GN   Name=azoR {ECO:0000255|HAMAP-Rule:MF_01216}; OrderedLocusNames=Mchl_2310;
OS   Methylorubrum extorquens (strain CM4 / NCIMB 13688) (Methylobacterium
OS   extorquens).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Methylobacteriaceae; Methylorubrum.
OX   NCBI_TaxID=440085;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CM4 / NCIMB 13688;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Chertkov O., Brettin T., Detter J.C.,
RA   Han C., Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N.,
RA   Marx C., Richardson P.;
RT   "Complete sequence of chromosome of Methylobacterium chloromethanicum
RT   CM4.";
RL   Submitted (DEC-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Quinone reductase that provides resistance to thiol-specific
CC       stress caused by electrophilic quinones. {ECO:0000255|HAMAP-
CC       Rule:MF_01216}.
CC   -!- FUNCTION: Also exhibits azoreductase activity. Catalyzes the reductive
CC       cleavage of the azo bond in aromatic azo compounds to the corresponding
CC       amines. {ECO:0000255|HAMAP-Rule:MF_01216}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 a quinone + H(+) + NADH = 2 a 1,4-benzosemiquinone + NAD(+);
CC         Xref=Rhea:RHEA:65952, ChEBI:CHEBI:15378, ChEBI:CHEBI:57540,
CC         ChEBI:CHEBI:57945, ChEBI:CHEBI:132124, ChEBI:CHEBI:134225;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01216};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=anthranilate + N,N-dimethyl-1,4-phenylenediamine + 2 NAD(+) =
CC         2-(4-dimethylaminophenyl)diazenylbenzoate + 2 H(+) + 2 NADH;
CC         Xref=Rhea:RHEA:55872, ChEBI:CHEBI:15378, ChEBI:CHEBI:15783,
CC         ChEBI:CHEBI:16567, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:71579; EC=1.7.1.17; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01216};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01216};
CC       Note=Binds 1 FMN per subunit. {ECO:0000255|HAMAP-Rule:MF_01216};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01216}.
CC   -!- SIMILARITY: Belongs to the azoreductase type 1 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01216}.
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DR   EMBL; CP001298; ACK83156.1; -; Genomic_DNA.
DR   RefSeq; WP_015950796.1; NC_011757.1.
DR   AlphaFoldDB; B7KYE7; -.
DR   SMR; B7KYE7; -.
DR   EnsemblBacteria; ACK83156; ACK83156; Mchl_2310.
DR   KEGG; mch:Mchl_2310; -.
DR   HOGENOM; CLU_088964_0_0_5; -.
DR   OMA; REGWDHS; -.
DR   BioCyc; MEXT440085:MCHL_RS11185-MON; -.
DR   Proteomes; UP000002385; Chromosome.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0010181; F:FMN binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016652; F:oxidoreductase activity, acting on NAD(P)H, NAD(P) as acceptor; IEA:UniProtKB-UniRule.
DR   GO; GO:0016655; F:oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor; IEA:InterPro.
DR   Gene3D; 3.40.50.360; -; 1.
DR   HAMAP; MF_01216; Azoreductase_type1; 1.
DR   InterPro; IPR003680; Flavodoxin_fold.
DR   InterPro; IPR029039; Flavoprotein-like_sf.
DR   InterPro; IPR023048; NADH:quinone_OxRdtase_FMN_depd.
DR   Pfam; PF02525; Flavodoxin_2; 1.
DR   SUPFAM; SSF52218; SSF52218; 1.
PE   3: Inferred from homology;
KW   Flavoprotein; FMN; NAD; Oxidoreductase.
FT   CHAIN           1..203
FT                   /note="FMN-dependent NADH:quinone oxidoreductase"
FT                   /id="PRO_1000164759"
FT   BINDING         9
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01216"
FT   BINDING         15..17
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01216"
FT   BINDING         138..141
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01216"
SQ   SEQUENCE   203 AA;  20936 MW;  3498FD834A790FF4 CRC64;
     MKLLHVDGSI LGPHSVSRTV SAAIVDRLRA QHPGLEVIYR DLAGTPLPHL SGAVLAGAQP
     NATNTPDVQH DVELGRQVLE EFLAADIVVI GAPLYNFTLS SQLKAWIDRI LVAGVTFRYG
     PTGAEGLAGG KRVIAVVSRG GLYGPGTPAA AAEHAETYLR TVLAFIGITA PEIIVAEGIA
     LGAEARERAL AGALDAAAAL KAA