ID A0A0M2LUX7_9SPHN Unreviewed; 428 AA.
AC A0A0M2LUX7;
DT 11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT 11-NOV-2015, sequence version 1.
DT 24-JAN-2024, entry version 27.
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=XM50_03085 {ECO:0000313|EMBL:KKI21265.1};
OS Sphingomonas sp. Ag1.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Sphingomonas.
OX NCBI_TaxID=1642949 {ECO:0000313|EMBL:KKI21265.1, ECO:0000313|Proteomes:UP000033997};
RN [1] {ECO:0000313|EMBL:KKI21265.1, ECO:0000313|Proteomes:UP000033997}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Ag1 {ECO:0000313|EMBL:KKI21265.1,
RC ECO:0000313|Proteomes:UP000033997};
RA Pei D., Yu W., Kukutla P., Xu J.;
RT "Draft Genome Sequences of Sphingomonas sp. Ag1 from Mosquito Anopheles
RT gambiae.";
RL Submitted (APR-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:KKI21265.1}.
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DR EMBL; LAZX01000076; KKI21265.1; -; Genomic_DNA.
DR RefSeq; WP_046407296.1; NZ_LAZX01000076.1.
DR AlphaFoldDB; A0A0M2LUX7; -.
DR STRING; 1642949.XM50_03085; -.
DR PATRIC; fig|1642949.3.peg.3349; -.
DR OrthoDB; 9766715at2; -.
DR Proteomes; UP000033997; 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 Thiamine pyrophosphate {ECO:0000256|RuleBase:RU365014}.
FT DOMAIN 10..49
FT /note="2-oxoisovalerate dehydrogenase E1 alpha subunit N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF12573"
FT DOMAIN 88..382
FT /note="Dehydrogenase E1 component"
FT /evidence="ECO:0000259|Pfam:PF00676"
SQ SEQUENCE 428 AA; 47392 MW; B40FB22576501572 CRC64;
MADAARSNLP PLALHVPEPK FRPGDTVDFS DVEIPAAGSV RRPDTAEDAR GFTDLVYTMV
RVLDDDNRAV GPWDPKLSPD TLRRMLRHMA TVRAFDERMF RAQRQGKTSF YMKSLGEEAV
AVPQAYALDA DDMCFPSYRQ QGLLIARGCP LVDMMNQIYS NAGDKLQGKQ LPIMYSEKRF
SFFSISGNLT TQYPQAVGWA MASASKGDTR IAATWCGEGS TAEGDFHSAL TFATVYRAPV
IFNVVNNQWA ISSFSGFAGA EATTFAARAV GYGIAGLRVD GNDALAVYAA TQWAAERART
NQGPTLIEHF TYRAEGHSTS DDPSQYRSAG EPTAWPLGDP IRRLKDHLIT IGEWDEERQA
AMDKEVANEV KAAQKEAEKN GILGHGLHQP LDTLFDGVFE EMPWHLREQQ AQMIAEEEES
GRPWARKK
//
