ID   MQO_ALKHC               Reviewed;         500 AA.
AC   Q9Z9Q7;
DT   01-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 106.
DE   RecName: Full=Probable malate:quinone oxidoreductase {ECO:0000255|HAMAP-Rule:MF_00212};
DE            EC=1.1.5.4 {ECO:0000255|HAMAP-Rule:MF_00212};
DE   AltName: Full=MQO {ECO:0000255|HAMAP-Rule:MF_00212};
DE   AltName: Full=Malate dehydrogenase [quinone] {ECO:0000255|HAMAP-Rule:MF_00212};
GN   Name=mqo {ECO:0000255|HAMAP-Rule:MF_00212}; OrderedLocusNames=BH3960;
OS   Alkalihalobacillus halodurans (strain ATCC BAA-125 / DSM 18197 / FERM 7344
OS   / JCM 9153 / C-125) (Bacillus halodurans).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Alkalihalobacillus.
OX   NCBI_TaxID=272558;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125;
RX   PubMed=10086841; DOI=10.1007/s007920050095;
RA   Takami H., Nakasone K., Hirama C., Takaki Y., Masui N., Fuji F.,
RA   Nakamura Y., Inoue A.;
RT   "An improved physical and genetic map of the genome of alkaliphilic
RT   Bacillus sp. C-125.";
RL   Extremophiles 3:21-28(1999).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-125 / DSM 18197 / FERM 7344 / JCM 9153 / C-125;
RX   PubMed=11058132; DOI=10.1093/nar/28.21.4317;
RA   Takami H., Nakasone K., Takaki Y., Maeno G., Sasaki R., Masui N., Fuji F.,
RA   Hirama C., Nakamura Y., Ogasawara N., Kuhara S., Horikoshi K.;
RT   "Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans
RT   and genomic sequence comparison with Bacillus subtilis.";
RL   Nucleic Acids Res. 28:4317-4331(2000).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-malate + a quinone = a quinol + oxaloacetate;
CC         Xref=Rhea:RHEA:46012, ChEBI:CHEBI:15589, ChEBI:CHEBI:16452,
CC         ChEBI:CHEBI:24646, ChEBI:CHEBI:132124; EC=1.1.5.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00212};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00212};
CC   -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle;
CC       oxaloacetate from (S)-malate (quinone route): step 1/1.
CC       {ECO:0000255|HAMAP-Rule:MF_00212}.
CC   -!- SIMILARITY: Belongs to the MQO family. {ECO:0000255|HAMAP-
CC       Rule:MF_00212}.
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; AB013369; BAA75375.1; -; Genomic_DNA.
DR   EMBL; BA000004; BAB07679.1; -; Genomic_DNA.
DR   PIR; T44345; T44345.
DR   RefSeq; WP_010900084.1; NC_002570.2.
DR   AlphaFoldDB; Q9Z9Q7; -.
DR   STRING; 272558.10176585; -.
DR   EnsemblBacteria; BAB07679; BAB07679; BAB07679.
DR   KEGG; bha:BH3960; -.
DR   eggNOG; COG0579; Bacteria.
DR   HOGENOM; CLU_028151_0_0_9; -.
DR   OMA; PHLDTRW; -.
DR   OrthoDB; 1371190at2; -.
DR   UniPathway; UPA00223; UER01008.
DR   Proteomes; UP000001258; Chromosome.
DR   GO; GO:0052589; F:malate dehydrogenase (menaquinone) activity; IEA:UniProtKB-EC.
DR   GO; GO:0008924; F:malate dehydrogenase (quinone) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.50.50.60; -; 1.
DR   HAMAP; MF_00212; MQO; 1.
DR   InterPro; IPR036188; FAD/NAD-bd_sf.
DR   InterPro; IPR006231; MQO.
DR   Pfam; PF06039; Mqo; 1.
DR   SUPFAM; SSF51905; SSF51905; 1.
DR   TIGRFAMs; TIGR01320; mal_quin_oxido; 1.
PE   3: Inferred from homology;
KW   FAD; Flavoprotein; Oxidoreductase; Reference proteome;
KW   Tricarboxylic acid cycle.
FT   CHAIN           1..500
FT                   /note="Probable malate:quinone oxidoreductase"
FT                   /id="PRO_0000128706"
SQ   SEQUENCE   500 AA;  55081 MW;  4B4E4EF094AA4B6F CRC64;
     MSSIQNKTDV ILIGAGIMSA TLGSLLKELK PEWEIKVFEK LANAGEESSN EWNNAGTGHA
     ALCELNYTAE KSDGTIDISK AVKINEQFQI SRQFWAYLVS QNLISNPQDF IMPIPHMSLV
     QGEDNVAYLK KRFKALSNIP LFEGMEFSND PEKLKEWIPL VMEGRTSNEP IAATKIDSGT
     DVNFGALTRM LFEHLKEQNV EVHYKHSVKD IKRTSDGSWS VKVQEIESGT IEYHTANFVF
     IGGGGGSLPL LQKTGIPESK NIGGFPVSGL FMVCNNPEVV EQHHAKVYGK AKVGAPPMSV
     PHLDTRYIDN KKSLLFGPFA GFSPKFLKTG SNFDLIGSVK PYNVFTMLAA GAKEMSLTKY
     LIQQVMLSKE KRMAELREFM PNAKSEDWDI VVAGQRVQVI KDTEAGGKGT LQFGTEVVSS
     ADGSIAALLG ASPGASTAVH VMLEVLEKCF PHHMLEWQPK IKEMIPSYGV SLAENRELFQ
     EIHQSTAEAL GLSEKELVHS