ID   MQO_PROMM               Reviewed;         496 AA.
AC   Q7V8S6;
DT   15-DEC-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2003, sequence version 1.
DT   25-MAY-2022, entry version 94.
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=PMT_0255;
OS   Prochlorococcus marinus (strain MIT 9313).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=74547;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MIT 9313;
RX   PubMed=12917642; DOI=10.1038/nature01947;
RA   Rocap G., Larimer F.W., Lamerdin J.E., Malfatti S., Chain P., Ahlgren N.A.,
RA   Arellano A., Coleman M., Hauser L., Hess W.R., Johnson Z.I., Land M.L.,
RA   Lindell D., Post A.F., Regala W., Shah M., Shaw S.L., Steglich C.,
RA   Sullivan M.B., Ting C.S., Tolonen A., Webb E.A., Zinser E.R.,
RA   Chisholm S.W.;
RT   "Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche
RT   differentiation.";
RL   Nature 424:1042-1047(2003).
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}.
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DR   EMBL; BX548175; CAE20430.1; -; Genomic_DNA.
DR   RefSeq; WP_011129634.1; NC_005071.1.
DR   AlphaFoldDB; Q7V8S6; -.
DR   STRING; 74547.PMT_0255; -.
DR   EnsemblBacteria; CAE20430; CAE20430; PMT_0255.
DR   KEGG; pmt:PMT_0255; -.
DR   eggNOG; COG0579; Bacteria.
DR   HOGENOM; CLU_028151_0_0_3; -.
DR   OMA; PHLDTRW; -.
DR   OrthoDB; 1371190at2; -.
DR   UniPathway; UPA00223; UER01008.
DR   Proteomes; UP000001423; 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..496
FT                   /note="Probable malate:quinone oxidoreductase"
FT                   /id="PRO_0000128727"
SQ   SEQUENCE   496 AA;  53900 MW;  D32F3D17FDC408E9 CRC64;
     MVVSDVAGSQ SRYDAVLVGA GIMSATLAAL LHELDPELSL LMVERLQAPG LESSAAENNA
     GTGHAANCEL NYTPLQPDGS VATAKALAIN TAFERSLEFW ASLTEKGKLL PQQFLHLVPH
     ISVVFGDADL AFLHQRFQQL SALPAFASMQ WSTDVAELAE WMPLVMEGRA NAESVAATCI
     KRGTDVDFGL LTGAYVKSLQ ASGALELSCG CEVVHLHRLG KHQWNLDLKH SSGSRSVQTP
     FVFLGAGGGA LPLLQRSGIP EAAAYAGFPV SGQWLVCSEP GLTARHHAKV YGKAKVGAPP
     MSVPHLDSRW IDGCRSLLFG PYAGFSSKFL KQGSRLDLLR SVRRSNFRSM LEVGFKNFDL
     VTYLLSELQQ SEKDRFETLK QFLPNAQLND WKLSVAGQRV QIIKRTAEGG RLQMGTEVVS
     AQDGSLAALL GASPGASTAV TVMLEVLQRC WSERMASESW QQRLRKLLPS YGHDPNSEPL
     LLTQMRIRSN KLLNFT