ID   MDH_DESPS               Reviewed;         325 AA.
AC   Q6AQI3;
DT   01-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   13-SEP-2004, sequence version 1.
DT   03-AUG-2022, entry version 109.
DE   RecName: Full=Malate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01517};
DE            EC=1.1.1.37 {ECO:0000255|HAMAP-Rule:MF_01517};
GN   Name=mdh {ECO:0000255|HAMAP-Rule:MF_01517}; OrderedLocusNames=DP0661;
OS   Desulfotalea psychrophila (strain LSv54 / DSM 12343).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfobacterales;
OC   Desulfocapsaceae; Desulfotalea.
OX   NCBI_TaxID=177439;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 12343 / LSv54;
RX   PubMed=15305914; DOI=10.1111/j.1462-2920.2004.00665.x;
RA   Rabus R., Ruepp A., Frickey T., Rattei T., Fartmann B., Stark M., Bauer M.,
RA   Zibat A., Lombardot T., Becker I., Amann J., Gellner K., Teeling H.,
RA   Leuschner W.D., Gloeckner F.-O., Lupas A.N., Amann R., Klenk H.-P.;
RT   "The genome of Desulfotalea psychrophila, a sulfate-reducing bacterium from
RT   permanently cold Arctic sediments.";
RL   Environ. Microbiol. 6:887-902(2004).
CC   -!- FUNCTION: Catalyzes the reversible oxidation of malate to oxaloacetate.
CC       {ECO:0000255|HAMAP-Rule:MF_01517}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-malate + NAD(+) = H(+) + NADH + oxaloacetate;
CC         Xref=Rhea:RHEA:21432, ChEBI:CHEBI:15378, ChEBI:CHEBI:15589,
CC         ChEBI:CHEBI:16452, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=1.1.1.37;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01517};
CC   -!- SIMILARITY: Belongs to the LDH/MDH superfamily. MDH type 2 family.
CC       {ECO:0000255|HAMAP-Rule:MF_01517}.
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DR   EMBL; CR522870; CAG35390.1; -; Genomic_DNA.
DR   RefSeq; WP_011187906.1; NC_006138.1.
DR   AlphaFoldDB; Q6AQI3; -.
DR   SMR; Q6AQI3; -.
DR   STRING; 177439.DP0661; -.
DR   PRIDE; Q6AQI3; -.
DR   EnsemblBacteria; CAG35390; CAG35390; DP0661.
DR   KEGG; dps:DP0661; -.
DR   eggNOG; COG0039; Bacteria.
DR   HOGENOM; CLU_040727_2_0_7; -.
DR   OMA; TKGMERG; -.
DR   OrthoDB; 870724at2; -.
DR   Proteomes; UP000000602; Chromosome.
DR   GO; GO:0030060; F:L-malate dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006108; P:malate metabolic process; IEA:InterPro.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.90.110.10; -; 1.
DR   HAMAP; MF_01517; Malate_dehydrog_2; 1.
DR   InterPro; IPR001557; L-lactate/malate_DH.
DR   InterPro; IPR022383; Lactate/malate_DH_C.
DR   InterPro; IPR001236; Lactate/malate_DH_N.
DR   InterPro; IPR015955; Lactate_DH/Glyco_Ohase_4_C.
DR   InterPro; IPR010945; Malate_DH_type2.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   PANTHER; PTHR23382; PTHR23382; 1.
DR   Pfam; PF02866; Ldh_1_C; 1.
DR   Pfam; PF00056; Ldh_1_N; 1.
DR   PIRSF; PIRSF000102; Lac_mal_DH; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   SUPFAM; SSF56327; SSF56327; 1.
DR   TIGRFAMs; TIGR01759; MalateDH-SF1; 1.
PE   3: Inferred from homology;
KW   NAD; Oxidoreductase; Reference proteome; Tricarboxylic acid cycle.
FT   CHAIN           1..325
FT                   /note="Malate dehydrogenase"
FT                   /id="PRO_0000113369"
FT   ACT_SITE        187
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         11..17
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         92
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         98
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         105
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         112
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         129..131
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         131
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
FT   BINDING         162
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01517"
SQ   SEQUENCE   325 AA;  34978 MW;  A5EECF8A5C5103F4 CRC64;
     MKPPVRVAIT GAAGHVSYSL IFRIAAGHML GKDQPVILQL LEIPQAMDVL KGVVLELEDC
     AFPLLHGLVC SDDVHVAFKD ADYAILVGAR PRGPGMERSD LIQANGPIFT TQGEALSAEA
     NPEVKVLVVG NPANTNALIL LKNAPYINPR NITAMMRLDH NRALFQVAKK MGCHCSDVEK
     MVVWGNHSAS QFPDISYAEI AGEKVAKGVE NNWHGDNLIP IIQQRGAAVI KARGASSAAS
     AASAAIDHMR NWVLGSGGKW VSMGVYSRGN SYGLDEDIMF SLPVICEDGD WREVAGLELS
     SFQRAMLEAT EAELQAEREA VADII