Gene Rv1483 (mabA)
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | Involved in the fatty acid biosynthesis pathway (first reduction step) (mycolic acid biosynthesis); reduces KASA/KASB products [catalytic activity: (3R)-3-hydroxyacyl-[acyl-carrier protein] + NADP+ = 3-oxoacyl-[acyl-carrier protein] + NADPH]. |
| Product | 3-oxoacyl-[acyl-carrier protein] reductase FabG1 (3-ketoacyl-acyl carrier protein reductase) (mycolic acid biosynthesis a protein) |
| Comments | Rv1483, (MTCY277.04), len: 247 aa. FabG1 (alternate gene name: mabA), 3-oxoacyl-[acyl-carrier protein] reductase (see citations below), equivalent to O07399|FABG_MYCAV 3-oxoacyl-[acyl-carrier protein] reductase from Mycobacterium avium (255 aa); P71534|FABG_MYCSM 3-oxoacyl-[acyl-carrier protein] reductase from Mycobacterium smegmatis (255 aa); and NP_302228.1|NC_002677 3-oxoacyl-[ACP] reductase (aka MabA) from Mycobacterium leprae (253 aa). Also highly similar to many e.g. T36779 probable 3-oxacyl-(acyl-carrier-protein) reductase from Streptomyces coelicolor (234 aa); FABG_ECOLI|P25716|NP_415611.1|NC_000913 3-oxoacyl-[acyl-carrier-protein] reductase from Escherichia coli strain K12 (244 aa), FASTA scores: opt: 664, E(): 6.8e-35, (44.4% identity in 241 aa overlap); etc. Contains PS00061 Short-chain dehydrogenases/reductases family signature. Belongs to the short-chain dehydrogenases/reductases (SDR) family. |
| Functional category | Lipid metabolism |
| Proteomics | Identified in the membrane fraction of M. tuberculosis H37Rv using 1D-SDS-PAGE and uLC-MS/MS (See Gu et al., 2003). 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). Translational start site supported by proteomics data (See de Souza et al., 2011) (See Kelkar et al., 2011). |
| Mutant | Essential gene for in vitro growth of H37Rv in a MtbYM rich medium, by Himar1 transposon mutagenesis (see Minato et al. 2019). Essential gene for in vitro growth of H37Rv, by analysis of saturated Himar1 transposon libraries (see DeJesus et al. 2017). Non essential gene by Himar1 transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). Required for survival in primary murine macrophages, by transposon site hybridization (TraSH) in H37Rv (See Rengarajan et al., 2005). Essential gene, determined by allelic exchange experiments (See Parish et al., 2007). 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 | 1673440 | 1674183 | + |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv1483|fabG1
VTATATEGAKPPFVSRSVLVTGGNRGIGLAIAQRLAADGHKVAVTHRGSGAPKGLFGVECDVTDSDAVDRAFTAVEEHQGPVEVLVSNAGLSADAFLMRMTEEKFEKVINANLTGAFRVAQRASRSMQRNKFGRMIFIGSVSGSWGIGNQANYAASKAGVIGMARSIARELSKANVTANVVAPGYIDTDMTRALDERIQQGALQFIPAKRVGTPAEVAGVVSFLASEDASYISGAVIPVDGGMGMGH
Bibliography
- Cole ST et al. [1998]. Deciphering the biology of Mycobacterium tuberculosis from the complete genome sequence. Sequence Secondary
- Banerjee A et al. [1998]. The mabA gene from the inhA operon of Mycobacterium tuberculosis encodes a 3-ketoacyl reductase that fails to confer isoniazid resistance. Product Biochemistry
- Kremer L, Baulard AR and Besra GS [2000]. Review
- Marrakchi H et al. [2002]. MabA (FabG1), a Mycobacterium tuberculosis protein involved in the long-chain fatty acid elongation system FAS-II. Sequence Product Biochemistry
- Cohen-Gonsaud M et al. [2002]. Crystal structure of MabA from Mycobacterium tuberculosis, a reductase involved in long-chain fatty acid biosynthesis. Structure
- Sassetti CM et al. [2003]. Genes required for mycobacterial growth defined by high density mutagenesis. Mutant
- Dahl JL et al. [2003]. The role of RelMtb-mediated adaptation to stationary phase in long-term persistence of Mycobacterium tuberculosis in mice. Regulon
- Gu S et al. [2003]. Comprehensive proteomic profiling of the membrane constituents of a Mycobacterium tuberculosis strain. Proteomics
- Rengarajan J et al. [2005]. Genome-wide requirements for Mycobacterium tuberculosis adaptation and survival in macrophages. Mutant
- Parish T et al. [2007]. Functional complementation of the essential gene fabG1 of Mycobacterium tuberculosis by Mycobacterium smegmatis fabG but not Escherichia coli fabG. Mutant
- Poncet-Montange G et al. [2007]. Lack of dynamics in the MabA active site kills the enzyme activity: practical consequences for drug-design studies. Structure
- Gurvitz A [2009]. The essential mycobacterial genes, fabG1 and fabG4, encode 3-oxoacyl-thioester reductases that are functional in yeast mitochondrial fatty acid synthase type 2. Function Product
- Målen H et al. [2010]. Definition of novel cell envelope associated proteins in Triton X-114 extracts of Mycobacterium tuberculosis H37Rv. Proteomics
- de Souza GA et al. [2011]. Bacterial proteins with cleaved or uncleaved signal peptides of the general secretory pathway. Proteomics
- Kelkar DS et al. [2011]. Proteogenomic analysis of Mycobacterium tuberculosis by high resolution mass spectrometry. Proteomics Sequence
- Griffin JE et al. [2011]. High-resolution phenotypic profiling defines genes essential for mycobacterial growth and cholesterol catabolism. Mutant
- de Souza GA et al. [2011]. Proteogenomic analysis of polymorphisms and gene annotation divergences in prokaryotes using a clustered mass spectrometry-friendly database. Proteomics Sequence
- 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
