Gene Rv3398c (idsA)
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | Involved in the biosynthesis of membrane ether-linked lipids. Catalyzes the trans-addition of the three molecules of IPP onto DMAPP to form geranylgeranyl pyrophosphate which is a precursor of the ether-linked lipids [catalytic ACTIVITY1: dimethylallyl diphosphate + isopentenyl diphosphate = diphosphate + geranyl diphosphate] [catalytic ACTIVITY2: geranyl diphosphate + isopentenyl diphosphate = diphosphate + trans,trans-farnesyl diphosphate] [catalytic ACTIVITY3: trans-trans-farnesyl diphosphate + isopentenyl diphosphate = diphosphate + geranylgeranyl diphosphate] |
| Product | Probable multifunctional geranylgeranyl pyrophosphate synthetase IdsA1 (GGPP synthetase) (ggppsase) (geranylgeranyl diphosphate synthase): dimethylallyltransferase (prenyltransferase) (geranyl-diphosphate synthase) + geranyltranstransferase (farnesyl-diphosphate synthase) (farnesyl-pyrophosphate synthetase) (farnesyl diphosphate synthetase) (FPP synthetase) + farnesyltranstransferase (geranylgeranyl-diphosphate synthase) |
| Comments | Rv3398c, (MTCY78.30), len: 359 aa. Probable idsA1, geranylgeranyl pyrophosphate synthetase (GGPP synthetase) including: dimethylallyltransferase , geranyltranstransferase, and farnesyltranstransferase. Most similar to AE000797_3|O26156|Q53479 bifunctional short chain isoprenyl diphosphate synthase from Methanobacterium thermoautotrop (325 aa), FASTA scores: opt: 605, E(): 0, (37.1% identity in 329 aa overlap); homology suggests ATG at 30121 or TTG at 30145 to be the initiation codon. Contains PS00444 Polyprenyl synthetases signature 2. Belongs to the FPP/GGPP synthetases family; belongs to a family that groups together FPP synthetase, GGPP synthetase and hexaprenyl pyrophosphate synthetase. Note that previously known as idsA. |
| Functional category | Lipid metabolism |
| Transcriptomics | DNA microarrays show lower level of expression in M. tuberculosis H37Rv than in phoP|Rv0757 mutant (See Walters et al., 2006). |
| 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). Essential gene by Himar1 transposon mutagenesis in H37Rv strain (see Sassetti et al., 2003). Check for mutants available at TARGET website |
Coordinates
| Type | Start | End | Orientation |
|---|---|---|---|
| CDS | 3815027 | 3816106 | - |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv3398c|idsA1
MRGTDEKYGLPPQPDSDRMTRRTLPVLGLAHELITPTLRQMADRLDPHMRPVVSYHLGWSDERGRPVNNNCGKAIRPALVFVAAEAAGADPHSAIPGAVSVELVHNFSLVHDDLMDRDEHRRHRPTVWALWGDAMALLAGDAMLSLAHEVLLDCDSPHVGAALRAISEATRELIRGQAADTAFESRTDVALDECLKMAEGKTAALMAASAEVGALLAGAPRSVREALVAYGRHIGLAFQLVDDLLGIWGRPEITGKPVYSDLRSRKKTLPVTWTVAHGGSAGRRLAAWLVDETGSQTASDDELAAVAELIECGGGRRWASAEARRHVTQGIDMVARIGIPDRPAAELQDLAHYIVDRQA
Bibliography
- Sassetti CM et al. [2003]. Genes required for mycobacterial growth defined by high density mutagenesis. Mutant
- Walters SB et al. [2006]. The Mycobacterium tuberculosis PhoPR two-component system regulates genes essential for virulence and complex lipid biosynthesis. Transcriptome
- 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
