ID A0A2K2G486_9SPHN Unreviewed; 436 AA.
AC A0A2K2G486;
DT 28-MAR-2018, integrated into UniProtKB/TrEMBL.
DT 28-MAR-2018, sequence version 1.
DT 24-JAN-2024, entry version 22.
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=A8V01_14895 {ECO:0000313|EMBL:PNU05846.1};
OS Novosphingobium guangzhouense.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Novosphingobium.
OX NCBI_TaxID=1850347 {ECO:0000313|EMBL:PNU05846.1, ECO:0000313|Proteomes:UP000236327};
RN [1] {ECO:0000313|EMBL:PNU05846.1, ECO:0000313|Proteomes:UP000236327}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SA925 {ECO:0000313|EMBL:PNU05846.1,
RC ECO:0000313|Proteomes:UP000236327};
RA Sha S.;
RT "Complete genome sequence of Novosphingobium guangzhouense SA925(T).";
RL Submitted (MAY-2016) 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:PNU05846.1}.
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DR EMBL; LYMM01000022; PNU05846.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2K2G486; -.
DR OrthoDB; 9766715at2; -.
DR Proteomes; UP000236327; 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; IPR022593; Oxoisoval_DH_suAlpha_N_dom.
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 Pfam; PF12573; OxoDH_E1alpha_N; 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 Reference proteome {ECO:0000313|Proteomes:UP000236327};
KW Thiamine pyrophosphate {ECO:0000256|RuleBase:RU365014}.
FT DOMAIN 17..56
FT /note="2-oxoisovalerate dehydrogenase E1 alpha subunit N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF12573"
FT DOMAIN 94..388
FT /note="Dehydrogenase E1 component"
FT /evidence="ECO:0000259|Pfam:PF00676"
SQ SEQUENCE 436 AA; 48503 MW; 72F4058DC2B44C84 CRC64;
MAENTAPEPG KARGNLPPLE LYVPEPRYRP GDVVDYSHLP VPPAGQLARP DENCPASETW
PMTTDMIRVL DEEDRAVGPW NPGLDADTLR RMLRTMALTR AFDDRMYRGQ RQGKTSFYMK
CTGEEAISVA HAHALAHDDM VFPTYRQQGI LISRGYPLVE MVNQIYSNRA DKLKGRQLPV
MYSAKDYGFF TISGNLATQY PQAVGWAMAS AIKGDTRIAS AFVGEGSSAE GDFHAAMTFA
AVYNAPVVLN VVNNQWAISS FSGFAGAERT TFAARAAGYG IAGLRVDGND ALAVYAASRW
AADRARANQG PTLIEHFTYR AEGHSTSDDP SAYRSAQERE EWPLGDPIMR LKKHLIALGE
WSEEQQEAMD RDLVEQVKIA TKEAEKNGVL GHGLHHPFHT MFEDVFEELP WHLEEQAAQA
IRERQSKWPE WKGESA
//
