ID   MQO_PROMP               Reviewed;         497 AA.
AC   Q7V2Q2;
DT   15-DEC-2003, integrated into UniProtKB/Swiss-Prot.
DT   15-DEC-2003, sequence version 2.
DT   25-MAY-2022, entry version 91.
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=PMM0419;
OS   Prochlorococcus marinus subsp. pastoris (strain CCMP1986 / NIES-2087 /
OS   MED4).
OC   Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC   Prochlorococcus.
OX   NCBI_TaxID=59919;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CCMP1986 / NIES-2087 / MED4;
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAE18878.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; BX548174; CAE18878.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; WP_011132055.1; NC_005072.1.
DR   AlphaFoldDB; Q7V2Q2; -.
DR   STRING; 59919.PMM0419; -.
DR   EnsemblBacteria; CAE18878; CAE18878; PMM0419.
DR   KEGG; pmm:PMM0419; -.
DR   eggNOG; COG0579; Bacteria.
DR   HOGENOM; CLU_028151_0_0_3; -.
DR   OMA; PHLDTRW; -.
DR   OrthoDB; 1371190at2; -.
DR   UniPathway; UPA00223; UER01008.
DR   Proteomes; UP000001026; 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   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; Tricarboxylic acid cycle.
FT   CHAIN           1..497
FT                   /note="Probable malate:quinone oxidoreductase"
FT                   /id="PRO_0000128728"
SQ   SEQUENCE   497 AA;  55614 MW;  02AE5FDD80F83287 CRC64;
     MTSKNILNKN NCYDAILVGA GIMSGTLALL ITEILPTIKI LIIEKLNKPG SESTGAFNNA
     GTGHAANCEL NYTPVDENGD LQIDKALFIN RSFENSMSLW ASLYSKGKID IKKFLKFIPH
     ISFVTGTENI SFLKKRFKAM SKYPEFADME FSSSFNQIKS WAPLITTCRD PLDKVAATRI
     KRGTDINFQA LTREYLTYIS KNKNVEIFYN TELIDLKKTD KKQWKLKVRS LGKIVSLNTS
     YVFLGAGGKT INFLQKSKIP EAKIYGGFPV SGKWLICEEK SLTEKHNAKV YGKADIGSPP
     MSVPHLDTRW IEGKKFLLYG PFAGFTTKFL KKGSYLDLFS SIKKSNLFSM LDVGIKNNEL
     INYLFSQSFK SHNSRVENLR NMMPSAEPSN WYLENAGQRV QIIKKTKDGG SLQFGTEIVN
     SGDGSLSALL GASPGASTAV SIMIEVLKKS CLFNADKFEL EKKLSNLLYE SEIKNESDNN
     FLEIIKKRNN SILGFHP