ID   LLDD_ALCFA              Reviewed;         379 AA.
AC   Q6WB83;
DT   10-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 66.
DE   RecName: Full=L-lactate dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01559};
DE            EC=1.1.-.- {ECO:0000255|HAMAP-Rule:MF_01559};
GN   Name=lldD {ECO:0000255|HAMAP-Rule:MF_01559};
OS   Alcaligenes faecalis.
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Alcaligenaceae; Alcaligenes.
OX   NCBI_TaxID=511;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=CCUG 2071 / LMG 3368 / NCIMB 8687;
RA   Silver S., Phung L.T., Malo B.J.;
RT   "Genes for arsenite oxidation from Alcaligenes faecalis.";
RL   Submitted (APR-2003) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the conversion of L-lactate to pyruvate. Is coupled
CC       to the respiratory chain. {ECO:0000255|HAMAP-Rule:MF_01559}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(S)-lactate + A = AH2 + pyruvate; Xref=Rhea:RHEA:45816,
CC         ChEBI:CHEBI:13193, ChEBI:CHEBI:15361, ChEBI:CHEBI:16651,
CC         ChEBI:CHEBI:17499; Evidence={ECO:0000255|HAMAP-Rule:MF_01559};
CC   -!- COFACTOR:
CC       Name=FMN; Xref=ChEBI:CHEBI:58210;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01559};
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000255|HAMAP-Rule:MF_01559};
CC       Peripheral membrane protein {ECO:0000255|HAMAP-Rule:MF_01559}.
CC   -!- SIMILARITY: Belongs to the FMN-dependent alpha-hydroxy acid
CC       dehydrogenase family. {ECO:0000255|HAMAP-Rule:MF_01559}.
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DR   EMBL; AY297781; AAQ19817.1; -; Genomic_DNA.
DR   RefSeq; WP_003804027.1; NZ_CP036294.1.
DR   AlphaFoldDB; Q6WB83; -.
DR   SMR; Q6WB83; -.
DR   STRING; 511.JT27_12465; -.
DR   eggNOG; COG1304; Bacteria.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0010181; F:FMN binding; IEA:InterPro.
DR   GO; GO:0004457; F:lactate dehydrogenase activity; IEA:InterPro.
DR   GO; GO:0019516; P:lactate oxidation; IEA:UniProtKB-UniRule.
DR   CDD; cd02809; alpha_hydroxyacid_oxid_FMN; 1.
DR   Gene3D; 3.20.20.70; -; 1.
DR   HAMAP; MF_01559; L_lact_dehydr; 1.
DR   InterPro; IPR013785; Aldolase_TIM.
DR   InterPro; IPR012133; Alpha-hydoxy_acid_DH_FMN.
DR   InterPro; IPR000262; FMN-dep_DH.
DR   InterPro; IPR037396; FMN_HAD.
DR   InterPro; IPR008259; FMN_hydac_DH_AS.
DR   InterPro; IPR020920; LldD.
DR   Pfam; PF01070; FMN_dh; 1.
DR   PIRSF; PIRSF000138; Al-hdrx_acd_dh; 1.
DR   PROSITE; PS00557; FMN_HYDROXY_ACID_DH_1; 1.
DR   PROSITE; PS51349; FMN_HYDROXY_ACID_DH_2; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Flavoprotein; FMN; Membrane; Oxidoreductase.
FT   CHAIN           1..379
FT                   /note="L-lactate dehydrogenase"
FT                   /id="PRO_0000206330"
FT   DOMAIN          1..379
FT                   /note="FMN hydroxy acid dehydrogenase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   ACT_SITE        275
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         24
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         106
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         127
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         129
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         155
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         164
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         251
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         278
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
FT   BINDING         306..330
FT                   /ligand="FMN"
FT                   /ligand_id="ChEBI:CHEBI:58210"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01559"
SQ   SEQUENCE   379 AA;  41414 MW;  9975D092C4DDF2F9 CRC64;
     MIISSSTDYR RAAQKRLPPF LFHYIDGGAY AEHTLRRNVD DLAEVALRQR VLKDMSQLDT
     SIDLFGEKLS MPVALSPVGL TGMYARRGEV QAARAADARG IPFTMSSVSV CPIEEVAPRL
     SRPMWFQLYV LKDRGFMRNA LERAQAAGCS TLVFTVDMPV PGARYRDAHS GMSGPNAALR
     RYAQAVMHPR WAWDVGLLGR PHDLGNISRY LGKPTGLEDY MGYLGANFDP SISWKDLEWI
     REFWKGPMLI KGILDPDDAR DAVRFGADGI IVSNHGGRQL DGVLSSARAL PAIADAVKGQ
     IKILADSGIR SGLDVVRMIA LGADAAMLGR AYIYALAAAG QSGVDHLLGL IEKEIRVAMT
     LTSVSSISQI TSELLVREP