ID A0A101XRU5_9BACL Unreviewed; 340 AA.
AC A0A101XRU5;
DT 13-APR-2016, integrated into UniProtKB/TrEMBL.
DT 13-APR-2016, sequence version 1.
DT 24-JAN-2024, entry version 28.
DE RecName: Full=2-oxoisovalerate dehydrogenase subunit alpha {ECO:0000256|RuleBase:RU365014};
DE EC=1.2.4.4 {ECO:0000256|RuleBase:RU365014};
DE AltName: Full=Branched-chain alpha-keto acid dehydrogenase E1 component alpha chain {ECO:0000256|RuleBase:RU365014};
GN ORFNames=ATW55_03710 {ECO:0000313|EMBL:KUO96385.1};
OS Ferroacidibacillus organovorans.
OC Bacteria; Bacillota; Bacilli; Bacillales; Alicyclobacillaceae;
OC Ferroacidibacillus.
OX NCBI_TaxID=1765683 {ECO:0000313|EMBL:KUO96385.1, ECO:0000313|Proteomes:UP000053557};
RN [1] {ECO:0000313|EMBL:KUO96385.1, ECO:0000313|Proteomes:UP000053557}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ITV001 {ECO:0000313|EMBL:KUO96385.1,
RC ECO:0000313|Proteomes:UP000053557};
RA Dall'Agnol H., Nancucheo I., Johnson B., Oliveira R., Leite L., Pylro V.,
RA Nunes G.L., Tzotzos G., Fernandes G.R., Dutra J., Orellana S.C.,
RA Oliveira G.;
RT "Draft genome sequence of Acidibacillus ferrooxidans ITV001, isolated from
RT a chalcopyrite acid mine drainage site in Brazil.";
RL Submitted (DEC-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: The branched-chain alpha-keto dehydrogenase complex catalyzes
CC the overall conversion of alpha-keto acids to acyl-CoA and CO(2). It
CC contains multiple copies of three enzymatic components: branched-chain
CC alpha-keto acid decarboxylase (E1), lipoamide acyltransferase (E2) and
CC lipoamide dehydrogenase (E3). {ECO:0000256|RuleBase:RU365014}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=3-methyl-2-oxobutanoate + H(+) + N(6)-[(R)-lipoyl]-L-lysyl-
CC [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase] = CO2 +
CC N(6)-[(R)-S(8)-2-methylpropanoyldihydrolipoyl]-L-lysyl-
CC [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase];
CC Xref=Rhea:RHEA:13457, Rhea:RHEA-COMP:10488, Rhea:RHEA-COMP:10489,
CC ChEBI:CHEBI:11851, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:83099, ChEBI:CHEBI:83142; EC=1.2.4.4;
CC Evidence={ECO:0000256|RuleBase:RU365014};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000256|ARBA:ARBA00001964,
CC ECO:0000256|RuleBase:RU365014};
CC -!- SIMILARITY: Belongs to the BCKDHA family.
CC {ECO:0000256|RuleBase:RU365014}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KUO96385.1}.
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DR EMBL; LPVJ01000019; KUO96385.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A101XRU5; -.
DR Proteomes; UP000053557; Unassembled WGS sequence.
DR GO; GO:0003863; F:3-methyl-2-oxobutanoate dehydrogenase (2-methylpropanoyl-transferring) activity; IEA:UniProtKB-EC.
DR CDD; cd02000; TPP_E1_PDC_ADC_BCADC; 1.
DR Gene3D; 3.40.50.970; -; 1.
DR InterPro; IPR001017; DH_E1.
DR InterPro; IPR029061; THDP-binding.
DR PANTHER; PTHR43380; 2-OXOISOVALERATE DEHYDROGENASE SUBUNIT ALPHA, MITOCHONDRIAL; 1.
DR PANTHER; PTHR43380:SF1; 2-OXOISOVALERATE DEHYDROGENASE SUBUNIT ALPHA, MITOCHONDRIAL; 1.
DR Pfam; PF00676; E1_dh; 1.
DR SUPFAM; SSF52518; Thiamin diphosphate-binding fold (THDP-binding); 1.
PE 3: Inferred from homology;
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU365014};
KW Thiamine pyrophosphate {ECO:0000256|RuleBase:RU365014}.
FT DOMAIN 30..330
FT /note="Dehydrogenase E1 component"
FT /evidence="ECO:0000259|Pfam:PF00676"
FT REGION 1..21
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 340 AA; 37574 MW; 12D1D52D59D2D33A CRC64;
MAKPNQGSQG EDSPRHRALG LSDENVREMY RTMVLTRLLD ERMWLLNRAG KIPFVVSCKG
QEGSQIGAAF ALDPARDYVA PYYRDFGVVL RFGMSARDIM LSAYAKAEDP NSGGRQMPGH
FSSRTRHILS GSSPVSTQIP HAVGIALAAR MRGEKLVTYT SFGEGSSNQG DFHEAANFAG
VHKLPVIFFC ENNLYAISVP QNRQLGCAHV SDRAIGYGMP GVLVDGNDVL AVYEAVSQAV
LRGLNGEGPT LIEAVSYRIN PHSSDDDDRS YRSRDEVEEA KKNDALEVFR DELMRCGVWS
KEDEEALRKE LQRVVDEATE YAQKAPLAEP ETTLDHVYAK
//
