ID   MDH_PELUB               Reviewed;         320 AA.
AC   Q4FP28;
DT   27-JUN-2006, integrated into UniProtKB/Swiss-Prot.
DT   30-AUG-2005, sequence version 1.
DT   03-AUG-2022, entry version 101.
DE   RecName: Full=Malate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_00487};
DE            EC=1.1.1.37 {ECO:0000255|HAMAP-Rule:MF_00487};
GN   Name=mdh {ECO:0000255|HAMAP-Rule:MF_00487}; OrderedLocusNames=SAR11_0240;
OS   Pelagibacter ubique (strain HTCC1062).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Pelagibacterales;
OC   Pelagibacteraceae; Candidatus Pelagibacter.
OX   NCBI_TaxID=335992;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HTCC1062;
RX   PubMed=16109880; DOI=10.1126/science.1114057;
RA   Giovannoni S.J., Tripp H.J., Givan S., Podar M., Vergin K.L., Baptista D.,
RA   Bibbs L., Eads J., Richardson T.H., Noordewier M., Rappe M.S., Short J.M.,
RA   Carrington J.C., Mathur E.J.;
RT   "Genome streamlining in a cosmopolitan oceanic bacterium.";
RL   Science 309:1242-1245(2005).
CC   -!- FUNCTION: Catalyzes the reversible oxidation of malate to oxaloacetate.
CC       {ECO:0000255|HAMAP-Rule:MF_00487}.
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_00487};
CC   -!- SIMILARITY: Belongs to the LDH/MDH superfamily. MDH type 3 family.
CC       {ECO:0000255|HAMAP-Rule:MF_00487}.
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DR   EMBL; CP000084; AAZ21061.1; -; Genomic_DNA.
DR   RefSeq; WP_011281563.1; NC_007205.1.
DR   AlphaFoldDB; Q4FP28; -.
DR   SMR; Q4FP28; -.
DR   STRING; 335992.SAR11_0240; -.
DR   EnsemblBacteria; AAZ21061; AAZ21061; SAR11_0240.
DR   GeneID; 66294737; -.
DR   KEGG; pub:SAR11_0240; -.
DR   eggNOG; COG0039; Bacteria.
DR   HOGENOM; CLU_045401_2_1_5; -.
DR   OMA; MGWTSQA; -.
DR   OrthoDB; 870724at2; -.
DR   Proteomes; UP000002528; Chromosome.
DR   GO; GO:0030060; F:L-malate dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0019752; P:carboxylic acid metabolic process; IEA:InterPro.
DR   GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR   CDD; cd01339; LDH-like_MDH; 1.
DR   Gene3D; 3.90.110.10; -; 1.
DR   HAMAP; MF_00487; Malate_dehydrog_3; 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; IPR011275; Malate_DH_type3.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   Pfam; PF02866; Ldh_1_C; 1.
DR   Pfam; PF00056; Ldh_1_N; 1.
DR   PIRSF; PIRSF000102; Lac_mal_DH; 1.
DR   PRINTS; PR00086; LLDHDRGNASE.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   SUPFAM; SSF56327; SSF56327; 1.
DR   TIGRFAMs; TIGR01763; MalateDH_bact; 1.
PE   3: Inferred from homology;
KW   NAD; Oxidoreductase; Reference proteome; Tricarboxylic acid cycle.
FT   CHAIN           1..320
FT                   /note="Malate dehydrogenase"
FT                   /id="PRO_0000241957"
FT   ACT_SITE        175
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         8..13
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         33
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         82
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         88
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         95
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         118..120
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         120
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
FT   BINDING         151
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00487"
SQ   SEQUENCE   320 AA;  34427 MW;  A02982E95921F997 CRC64;
     MKKISLIGAG QIGGTLAHLI GTKEVADEVV LFDVASGIAK GKALDIAQSS SVDGFNVKFS
     GTDNYEDIKD SDVIIITAGV PRKPGMSRDD LLGINLKIIK QVAEGIKKNA PNAFVICITN
     PLDVMVMAFQ KFSGLPANKV VGMAGILDSS RFKLFLSLEL NVPVKEIEAM VMGGHGDTMV
     PLPRFTKVSG KPLLDLVKEG KISPERLEEI NQRTRDGGAE IVKYLEKGSA FYAPAASGVQ
     MAEAYLKDEK KLLPCAVHLN GEYGVSNVYA GVPVIIGKDG VEKIEQIDLD EKEKKEFMHS
     IDAVKALWEA ASKIDPDLSK