ID   MQO_ECO45               Reviewed;         548 AA.
AC   B7MFC3;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   28-JAN-2026, entry version 88.
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};
GN   OrderedLocusNames=ECS88_2358;
OS   Escherichia coli O45:K1 (strain S88 / ExPEC).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Enterobacterales; Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=585035;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=S88 / ExPEC;
RX   PubMed=19165319; DOI=10.1371/journal.pgen.1000344;
RA   Touchon M., Hoede C., Tenaillon O., Barbe V., Baeriswyl S., Bidet P.,
RA   Bingen E., Bonacorsi S., Bouchier C., Bouvet O., Calteau A., Chiapello H.,
RA   Clermont O., Cruveiller S., Danchin A., Diard M., Dossat C., Karoui M.E.,
RA   Frapy E., Garry L., Ghigo J.M., Gilles A.M., Johnson J., Le Bouguenec C.,
RA   Lescat M., Mangenot S., Martinez-Jehanne V., Matic I., Nassif X., Oztas S.,
RA   Petit M.A., Pichon C., Rouy Z., Ruf C.S., Schneider D., Tourret J.,
RA   Vacherie B., Vallenet D., Medigue C., Rocha E.P.C., Denamur E.;
RT   "Organised genome dynamics in the Escherichia coli species results in
RT   highly diverse adaptive paths.";
RL   PLoS Genet. 5:E1000344-E1000344(2009).
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; Evidence={ECO:0000255|HAMAP-
CC         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}.
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DR   EMBL; CU928161; CAR03639.1; -; Genomic_DNA.
DR   RefSeq; WP_000758066.1; NC_011742.1.
DR   AlphaFoldDB; B7MFC3; -.
DR   SMR; B7MFC3; -.
DR   KEGG; ecz:ECS88_2358; -.
DR   HOGENOM; CLU_028151_0_0_6; -.
DR   UniPathway; UPA00223; UER01008.
DR   Proteomes; UP000000747; Chromosome.
DR   GO; GO:0047545; F:(S)-2-hydroxyglutarate dehydrogenase activity; IEA:TreeGrafter.
DR   GO; GO:0008924; F:L-malate dehydrogenase (quinone) activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.9.10; D-Amino Acid Oxidase, subunit A, domain 2; 1.
DR   Gene3D; 3.50.50.60; FAD/NAD(P)-binding domain; 1.
DR   HAMAP; MF_00212; MQO; 1.
DR   InterPro; IPR036188; FAD/NAD-bd_sf.
DR   InterPro; IPR006231; MQO.
DR   NCBIfam; TIGR01320; mal_quin_oxido; 1.
DR   NCBIfam; NF003603; PRK05257.1-1; 1.
DR   NCBIfam; NF003605; PRK05257.1-4; 1.
DR   NCBIfam; NF003606; PRK05257.2-1; 1.
DR   NCBIfam; NF003608; PRK05257.2-4; 1.
DR   NCBIfam; NF003611; PRK05257.3-2; 1.
DR   NCBIfam; NF009875; PRK13339.1; 1.
DR   PANTHER; PTHR43104; L-2-HYDROXYGLUTARATE DEHYDROGENASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR43104:SF2; L-2-HYDROXYGLUTARATE DEHYDROGENASE, MITOCHONDRIAL; 1.
DR   Pfam; PF06039; Mqo; 1.
DR   SUPFAM; SSF51905; FAD/NAD(P)-binding domain; 1.
PE   3: Inferred from homology;
KW   FAD; Flavoprotein; Oxidoreductase; Reference proteome;
KW   Tricarboxylic acid cycle.
FT   CHAIN           1..548
FT                   /note="Probable malate:quinone oxidoreductase"
FT                   /id="PRO_1000191314"
FT   REGION          521..548
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        530..541
FT                   /note="Low complexity"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   548 AA;  60230 MW;  2378A6D125EBB238 CRC64;
     MKKVTAMLFS MAVGLNAVSM AAKAKASEEQ ETDVLLIGGG IMSATLGTYL RELEPEWSMT
     MVERLEGVAQ ESSNGWNNAG TGHSALMELN YTPQNADGSI SIEKAVAINE AFQISRQFWA
     HQVERGVLRT PRSFINTVPH MSFVWGEDNV NFLRARYAAL QQSSLFRGMR YSEDHAQIKE
     WAPLVMEGRD PQQKVAATRT EIGTDVNYGE ITRQLIASLQ KKSNFSLQLS SEVRALKRND
     DNTWTVTVAD LKNGTAQNIR AKFVFIGAGG AALKLLQESG IPEAKDYAGF PVGGQFLVSE
     NPDVVNHHLA KVYGKASVGA PPMSVPHIDT RVLDGKRVVL FGPFATFSTK FLKNGSLWDL
     MSSTTTSNVM PMMHVGLDNF DLVKYLVSQV MLSEEDRFEA LKEYYPQAKK EDWRLWQAGQ
     RVQIIKRDAD KGGVLRLGTE VVSDQQGTIA ALLGASPGAS TAAPIMLNLL EKVFGDRVSS
     PQWQATLKAI VPSYGRKLNG DVAATERELQ YTSEVLGLKY DKPQAADSTP KPQLKPQPVQ
     KEVADIAL
//