Gene Rv3795
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | Involved in the biosynthesis of the mycobacterial cell wall arabinan and resistance to ethambutol (EMB; dextro-2,2'-(ethylenediimino)-DI-1-butanol). Polymerizes arabinose into the arabinan of arabiogalactan [catalytic activity: UDP-L-arabinose + indol-3-ylacetyl-myo-inositol = UDP + indol-3-ylacetyl-myo-inositol L-arabinoside]. |
| Product | Integral membrane indolylacetylinositol arabinosyltransferase EmbB (arabinosylindolylacetylinositol synthase) |
| Comments | Rv3795, (MTCY13D12.29), len: 1098 aa. EmbB, integral membrane protein, indolylacetylinositol arabinosyltransferase (see citations below), equivalent to P71486|EMBB arabinosyl transferase from Mycobacterium avium (1065 aa), FASTA scores: opt: 4998, E(): 0, (83.25% identity in 1076 aa overlap); Q9CDA9|EMBB|ML0104 putative arabinosyl transferase from Mycobacterium leprae (1083 aa), FASTA scores: opt: 4706, E(): 0, (78.0% identity in 1101 aa overlap); O30406|EMBB (alias Q50395) putative arabinosyl transferase from Mycobacterium smegmatis (1082 aa), FASTA scores: opt: 4163, E(): 0, (68.4% identity in 1091 aa overlap); etc. Also similar to Q50393|EMBC putative arabinosyl transferase from Mycobacterium smegmatis (1074 aa), FASTA scores: opt: 2482, E(): 5e-135, (44.7% identity in 1101 aa overlap); Q9CDA7|EMBC|ML0106 putative arabinosyl transferase from Mycobacterium leprae (1070 aa), FASTA scores: opt: 2259, E(): 3.4e-122, (43.4% identity in 1104 aa overlap); etc. Also similar to P72059|EMBC|Rv3793|MTCY13D12.27 indolylacetylinositol arabinosyltransferase from Mycobacterium tuberculosis (1094 aa), FASTA scores: opt: 2276, E(): 3.6e-123, (44.45% identity in 1118 aa overlap); and P72060|EMBA|Rv3794|MTCY13D12.28 indolylacetylinositol arabinosyltransferase from Mycobacterium tuberculosis (1094 aa), FASTA scores: opt: 1288, E(): 2.5e-66, (42.35% identity in 1114 aa overlap). Supposedly regulated by embR|Rv1267c. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004). |
| Functional category | Cell wall and cell processes |
| Proteomics | Identified in the cell wall and cell membrane fractions 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). |
| 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). Essential gene by Himar1 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 | 4246514 | 4249810 | + |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv3795|embB
MTQCASRRKSTPNRAILGAFASARGTRWVATIAGLIGFVLSVATPLLPVVQTTAMLDWPQRGQLGSVTAPLISLTPVDFTATVPCDVVRAMPPAGGVVLGTAPKQGKDANLQALFVVVSAQRVDVTDRNVVILSVPREQVTSPQCQRIEVTSTHAGTFANFVGLKDPSGAPLRSGFPDPNLRPQIVGVFTDLTGPAPPGLAVSATIDTRFSTRPTTLKLLAIIGAIVATVVALIALWRLDQLDGRGSIAQLLLRPFRPASSPGGMRRLIPASWRTFTLTDAVVIFGFLLWHVIGANSSDDGYILGMARVADHAGYMSNYFRWFGSPEDPFGWYYNLLALMTHVSDASLWMRLPDLAAGLVCWLLLSREVLPRLGPAVEASKPAYWAAAMVLLTAWMPFNNGLRPEGIIALGSLVTYVLIERSMRYSRLTPAALAVVTAAFTLGVQPTGLIAVAALVAGGRPMLRILVRRHRLVGTLPLVSPMLAAGTVILTVVFADQTLSTVLEATRVRAKIGPSQAWYTENLRYYYLILPTVDGSLSRRFGFLITALCLFTAVFIMLRRKRIPSVARGPAWRLMGVIFGTMFFLMFTPTKWVHHFGLFAAVGAAMAALTTVLVSPSVLRWSRNRMAFLAALFFLLALCWATTNGWWYVSSYGVPFNSAMPKIDGITVSTIFFALFAIAAGYAAWLHFAPRGAGEGRLIRALTTAPVPIVAGFMAAVFVASMVAGIVRQYPTYSNGWSNVRAFVGGCGLADDVLVEPDTNAGFMKPLDGDSGSWGPLGPLGGVNPVGFTPNGVPEHTVAEAIVMKPNQPGTDYDWDAPTKLTSPGINGSTVPLPYGLDPARVPLAGTYTTGAQQQSTLVSAWYLLPKPDDGHPLVVVTAAGKIAGNSVLHGYTPGQTVVLEYAMPGPGALVPAGRMVPDDLYGEQPKAWRNLRFARAKMPADAVAVRVVAEDLSLTPEDWIAVTPPRVPDLRSLQEYVGSTQPVLLDWAVGLAFPCQQPMLHANGIAEIPKFRITPDYSAKKLDTDTWEDGTNGGLLGITDLLLRAHVMATYLSRDWARDWGSLRKFDTLVDAPPAQLELGTATRSGLWSPGKIRIGP
Bibliography
- Belanger AE et al. [1996]. The embAB genes of Mycobacterium avium encode an arabinosyl transferase involved in cell wall arabinan biosynthesis that is the target for the antimycobacterial drug ethambutol. Homolog Function
- Telenti A et al. [1997]. The emb operon, a gene cluster of Mycobacterium tuberculosis involved in resistance to ethambutol. Sequence
- Sassetti CM et al. [2003]. Genes required for mycobacterial growth defined by high density mutagenesis. Mutant
- Marmiesse M, Brodin P, Buchrieser C, Gutierrez C, Simoes N, Vincent V, Glaser P, Cole ST and Brosch R [2004]. Macro-array and bioinformatic analyses reveal mycobacterial 'core' genes, variation in the ESAT-6 gene family and new phylogenetic markers for the Mycobacterium tuberculosis complex. Homology
- Mawuenyega KG et al. [2005]. Mycobacterium tuberculosis functional network analysis by global subcellular protein profiling. Proteomics
- Safi H et al. [2008]. Transfer of embB codon 306 mutations into clinical Mycobacterium tuberculosis strains alters susceptibility to ethambutol, isoniazid, and rifampin. Mutant
- 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
- 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
