Gene Rv2496c
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | Involved in energy metabolism. The branched-chain alpha-keto acid dehydrogenase complex catalyzes the overall conversion of branched chain alpha-keto acids to acyl-CoA and CO2. It contains multiple copies of three enzymatic components: branched-chain alpha-keto acid decarboxylase (E1), lipoamide acyltransferase (E2) and lipoamide dehydrogenase (E3). |
| Product | Probable branched-chain keto acid dehydrogenase E1 component, beta subunit BkdB |
| Comments | Rv2496c, (MTCY07A7.02c), len: 348 aa. Probable bkdB, branched-chain keto acid dehydrogenase E1 component, beta subunit, similar to others e.g. Q9Y8I6||PDHB from Halobacterium volcanii (Haloferax volcanii) (327 aa) FASTA scores: opt: 1050, E(): 6.4e-60, (49.7% identity in 324 aa overlap); Q9KG98|BH0214 from Bacillus halodurans (328 aa), FASTA scores: opt: 987, E(): 6.9e-56, (45.7% identity in 324 aa overlap); Q9HN76|PDHB|VNG2218G from Halobacterium sp. strain NRC-1 (297 aa), FASTA scores: opt: 968, E(): 1.1e-54, (51.2% identity in 297 aa overlap); P21874|ODPB_BACST|PDHB pyruvate dehydrogenase E1 component from Bacillus stearothermophilus (324 aa), FASTA scores: opt: 951, E(): 1.4e-53, (47.6% identity in 321 aa overlap); etc. Also similar to Q9XA61|SCGD3.17c putative branched-chain alpha keto acid dehydrogenase E1, beta subunit (2-oxoisovalerate dehydrogenase) from Streptomyces coelicolor, (326 aa), FASTA scores: opt: 1178, E(): 4.1e-68, (55.0% identity in 322 aa overlap); Q9XA48|SCGD3.31c putative branched-chain alpha keto acid dehydrogenase E1 beta subunit from Streptomyces coelicolor (334 aa), FASTA scores: opt: 1173, E(): 8.8e-68, (55.6% identity in 320 aa overlap); Q53593|BKDB E1-beta branched-chain alpha keto acid dehydrogenase from Streptomyces avermitilis (334 aa), FASTA scores: opt: 1132, E(): 3.7e-65, (55.0% identity in 320 aa overlap); etc. Previously known as pdhB. |
| Functional category | Intermediary metabolism and respiration |
| Proteomics | Identified in the membrane fraction of M. tuberculosis H37Rv using 1D-SDS-PAGE and uLC-MS/MS (See Gu et al., 2003). Identified in the cell membrane fraction of M. tuberculosis H37Rv using 2DLC/MS (See Mawuenyega et al., 2005). Identified by mass spectrometry in Triton X-114 extracts of M. tuberculosis H37Rv (See Malen et al., 2010). Identified by mass spectrometry in the membrane protein fraction and whole cell lysates of M. tuberculosis H37Rv but not the culture filtrate (See de Souza et al., 2011). |
| Transcriptomics | mRNA identified by microarray analysis and up-regulated after 24h and 96h of starvation (see citation below). |
| Mutant | Non-essential gene for in vitro growth of H37Rv in a MtbYM rich medium, by Himar1 transposon mutagenesis (see Minato et al. 2019). Non-essential gene for in vitro growth of H37Rv, by analysis of saturated Himar1 transposon libraries (see DeJesus et al. 2017). Slow growth mutant by Himar1-based transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). Essential gene for in vitro growth of H37Rv, by Himar1 transposon mutagenesis (See Griffin et al., 2011). Check for mutants available at TARGET website |
Coordinates
| Type | Start | End | Orientation |
|---|---|---|---|
| CDS | 2809936 | 2810982 | - |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv2496c|bkdB
MTQIADRPARPDETLAVAVSDITQSLTMVQAINRALYDAMAADERVLVFGEDVAVEGGVFRVTEGLADTFGADRCFDTPLAESAIIGIAVGLALRGFVPVPEIQFDGFSYPAFDQVVSHLAKYRTRTRGEVDMPVTVRIPSFGGIGAAEHHSDSTESYWVHTAGLKVVVPSTPGDAYWLLRHAIACPDPVMYLEPKRRYHGRGMVDTSRPEPPIGHAMVRRSGTDVTVVTYGNLVSTALSSADTAEQQHDWSLEVIDLRSLAPLDFDTIAASIQRTGRCVVMHEGPRSLGYGAGLAARIQEEMFYQLEAPVLRACGFDTPYPPARLEKLWLPGPDRLLDCVERVLRQP
Bibliography
- Betts JC et al. [2002]. Evaluation of a nutrient starvation model of Mycobacterium tuberculosis persistence by gene and protein expression profiling. Transcriptome
- Gu S et al. [2003]. Comprehensive proteomic profiling of the membrane constituents of a Mycobacterium tuberculosis strain. Proteomics
- Sassetti CM et al. [2003]. Genes required for mycobacterial growth defined by high density mutagenesis. Mutant
- Mawuenyega KG et al. [2005]. Mycobacterium tuberculosis functional network analysis by global subcellular protein profiling. Proteomics
- Tian J, Bryk R, Shi S, Erdjument-Bromage H, Tempst P and Nathan C [2005]. Mycobacterium tuberculosis appears to lack alpha-ketoglutarate dehydrogenase and encodes pyruvate dehydrogenase in widely separated genes. Function
- Målen H et al. [2010]. Definition of novel cell envelope associated proteins in Triton X-114 extracts of Mycobacterium tuberculosis H37Rv. Proteomics
- Griffin JE et al. [2011]. High-resolution phenotypic profiling defines genes essential for mycobacterial growth and cholesterol catabolism. Mutant
- Venugopal A et al. [2011]. Virulence of Mycobacterium tuberculosis depends on lipoamide dehydrogenase, a member of three multienzyme complexes. Operon Product
- de Souza GA et al. [2011]. Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway. Proteomics
- DeJesus MA et al. [2017]. Comprehensive Essentiality Analysis of the Mycobacterium tuberculosis Genome via Saturating Transposon Mutagenesis. Mutant
- Minato Y et al. [2019]. Genomewide Assessment of Mycobacterium tuberculosis Conditionally Essential Metabolic Pathways. Mutant
