bkdAB

bkdAB
168

2-oxoisovalerate dehydrogenase (E1 beta subunit)

Locus
BSU_24040
Molecular weight
35.70 kDa
Isoelectric point
4.79
Protein length
Gene length
Function
utilization of branched-chain keto acids
Product
2-oxoisovalerate dehydrogenase (E1 beta subunit)
Essential
no
E.C.
1.2.4.4
Synonyms
bkdAB, bfmBAB, bfmB1b, bkd

Genomic Context

Categories containing this gene/protein

List of homologs in different organisms, belongs to COG0022 (Galperin et al., 2021)

This gene is a member of the following regulons

Gene
Coordinates
2,498,093  2,499,076
Phenotypes of a mutant
a strain lacking the ptb-bcd-buk-lpdV-bkdAA-bkdAB-bkdB operon and the des gene exhibits strongly reduced membrane fluidity and eventual growth arrest PubMed
The protein
Catalyzed reaction/ biological activity
3-methyl-2-oxobutanoate + [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase]-(R)-N6-lipoyl-L-lysine + H+ --> [dihydrolipoyllysine-residue (2-methylpropanoyl)transferase]-(R)-N6-(S8-2-methylpropanoyldihydrolipoyl)-L-lysine + CO2 (according to UniProt)
Structure
3DUF (PDB) (Geobacillus stearothermophilus PdhC, 36% identity) PubMed
Paralogous protein(s)
Cytoplasm (Homogeneous) PubMed
Expression and Regulation
Operons
Description
Regulation
induced in the presence of isoleucine or valine (BkdR) PubMed
Regulatory mechanism
BkdR: activation, PubMed, in bkdR regulon
CodY: repression, PubMed, in codY regulon
Sigma factors
SigL: sigma factor, PubMed, in sigL regulon
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ptbbkdB

2025-03-16 17:10:53

ghost

100

7b8921dc3f8fdb775067a1f92187895088ac1126

0BF3F61A9229E387986A64E3D2F9F647D24EA48A

Biological materials
Mutant
MGNA-C437 (bfmBAB::erm), available at the NBRP B. subtilis, Japan
BKE24040 (bkdAB::erm  trpC2) available at BGSCPubMed, upstream reverse: _UP1_CATTACTGACATTTGTTCTT,  downstream forward: _UP4_TAAAGACGTAAGGGAGGATA
BKK24040 (bkdAB::kan  trpC2) available at BGSCPubMed, upstream reverse: _UP1_CATTACTGACATTTGTTCTT,  downstream forward: _UP4_TAAAGACGTAAGGGAGGATA
References
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Page visits: 5330

Time of last update: 2025-04-01 23:15:19

Author of last update: Jstuelk