ID   DLDH_BUCAP              Reviewed;         476 AA.
AC   Q8K9T7;
DT   15-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   27-MAR-2024, entry version 137.
DE   RecName: Full=Dihydrolipoyl dehydrogenase;
DE            EC=1.8.1.4;
DE   AltName: Full=Dihydrolipoamide dehydrogenase;
DE   AltName: Full=E3 component of pyruvate and 2-oxoglutarate dehydrogenases complexes;
GN   Name=lpdA; OrderedLocusNames=BUsg_201;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
CC   -!- FUNCTION: Lipoamide dehydrogenase is a component of the alpha-ketoacid
CC       dehydrogenase complexes. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=N(6)-[(R)-dihydrolipoyl]-L-lysyl-[protein] + NAD(+) = H(+) +
CC         N(6)-[(R)-lipoyl]-L-lysyl-[protein] + NADH; Xref=Rhea:RHEA:15045,
CC         Rhea:RHEA-COMP:10474, Rhea:RHEA-COMP:10475, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:83099,
CC         ChEBI:CHEBI:83100; EC=1.8.1.4;
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692; Evidence={ECO:0000250};
CC       Note=Binds 1 FAD per subunit. {ECO:0000250};
CC   -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250}.
CC   -!- MISCELLANEOUS: The active site is a redox-active disulfide bond.
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the class-I pyridine nucleotide-disulfide
CC       oxidoreductase family. {ECO:0000305}.
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DR   EMBL; AE013218; AAM67765.1; -; Genomic_DNA.
DR   RefSeq; WP_011053732.1; NC_004061.1.
DR   AlphaFoldDB; Q8K9T7; -.
DR   SMR; Q8K9T7; -.
DR   STRING; 198804.BUsg_201; -.
DR   GeneID; 75258923; -.
DR   KEGG; bas:BUsg_201; -.
DR   eggNOG; COG1249; Bacteria.
DR   HOGENOM; CLU_016755_0_1_6; -.
DR   Proteomes; UP000000416; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004148; F:dihydrolipoyl dehydrogenase activity; IEA:UniProtKB-EC.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:InterPro.
DR   GO; GO:0006096; P:glycolytic process; IEA:UniProtKB-KW.
DR   Gene3D; 3.30.390.30; -; 1.
DR   Gene3D; 3.50.50.60; FAD/NAD(P)-binding domain; 2.
DR   InterPro; IPR036188; FAD/NAD-bd_sf.
DR   InterPro; IPR023753; FAD/NAD-binding_dom.
DR   InterPro; IPR016156; FAD/NAD-linked_Rdtase_dimer_sf.
DR   InterPro; IPR006258; Lipoamide_DH.
DR   InterPro; IPR001100; Pyr_nuc-diS_OxRdtase.
DR   InterPro; IPR004099; Pyr_nucl-diS_OxRdtase_dimer.
DR   InterPro; IPR012999; Pyr_OxRdtase_I_AS.
DR   NCBIfam; TIGR01350; lipoamide_DH; 1.
DR   PANTHER; PTHR22912:SF160; DIHYDROLIPOYL DEHYDROGENASE; 1.
DR   PANTHER; PTHR22912; DISULFIDE OXIDOREDUCTASE; 1.
DR   Pfam; PF07992; Pyr_redox_2; 1.
DR   Pfam; PF02852; Pyr_redox_dim; 1.
DR   PIRSF; PIRSF000350; Mercury_reductase_MerA; 1.
DR   PRINTS; PR00368; FADPNR.
DR   PRINTS; PR00411; PNDRDTASEI.
DR   SUPFAM; SSF51905; FAD/NAD(P)-binding domain; 1.
DR   SUPFAM; SSF55424; FAD/NAD-linked reductases, dimerisation (C-terminal) domain; 1.
DR   PROSITE; PS00076; PYRIDINE_REDOX_1; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Disulfide bond; FAD; Flavoprotein; NAD; Oxidoreductase;
KW   Redox-active center.
FT   CHAIN           1..476
FT                   /note="Dihydrolipoyl dehydrogenase"
FT                   /id="PRO_0000068020"
FT   ACT_SITE        446
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   BINDING         36..45
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
FT   BINDING         54
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
FT   BINDING         117
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
FT   BINDING         182..186
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         205
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         238
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         271..274
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         314
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
FT   BINDING         322
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
FT   DISULFID        45..50
FT                   /note="Redox-active"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   476 AA;  52187 MW;  2BCD5F1ECB08BA58 CRC64;
     MHQEIQSEVV IIGSGPAGYS AAFRCADLGL ETVLIEHQER LGGVCLNVGC IPSKSLLHIA
     KIIKDASELS ESGVFFNKPI IDIKKINNWK EKIIKKLTTG LSNMGEKRKV RIVQGKALFN
     TDHSVLVKNK KNDFTIFFKH AIIATGSKPI KIPSLPNEDN RIWNSTDALS LKSIPNRFLI
     IGGGIIGLEM ATIYSALGSK VDIVDRFNAF LPSVDKDITD IYIKSIKKRF KLLLNTHVKS
     VEKSKDNDLI VKIAEENSDE NVCCYDNILV AIGRSPNVDF LGLEKIGLKL NESGFIEINQ
     QLKTNISHIY AIGDVTGFPM LAHKAVQQAH IAAEVISGKK HYFEPKVIPS VAYTDPEIAW
     VGLSEKEAEN NDIDYEVSLF PWSASGRAHA SNCTLGMTKL IFNKNTNKII GGSIIGTNAS
     ELISEIGLAI EMGSDAEDIS LTIHPHPTLS ESISLASEVF QGTITDLLNL KKSLLN
//