Gene Rv3682
in Mycobacterium tuberculosis H37Rv
General annotation
| Type | CDS |
| Function | Involved in peptidoglycan synthesis (at the final stages), cell wall formation. Synthesis of cross-linked peptidoglycan from the lipid intermediates. The enzyme has a penicillin-insensitive transglycosylase N-terminal domain (formation of linear glycan strands) and a penicillin-sensitive transpeptidase C-terminal domain (cross-linking of the peptide subunits). Supposedly involved in stationary-phase survival. |
| Product | Probable bifunctional membrane-associated penicillin-binding protein 1A/1B PonA2 (murein polymerase) [includes: penicillin-insensitive transglycosylase (peptidoglycan TGASE) + penicillin-sensitive transpeptidase (DD-transpeptidase)] |
| Comments | Rv3682, (MTV025.030), len: 810 aa. Probable ponA2, penicillin-binding protein (class A), bienzymatic membrane-associated protein with transglycosylase and transpeptidase activities. Almost identical to Q9CB85|PON1|ML2308 penicillin binding protein (class A) from Mycobacterium leprae (803 aa) FASTA scores: opt: 4743, E(): 3.3e-217, (87.7% identity in 806 aa overlap); or P72351|PON1|PBP1 high-molecular-mass class a penicillin binding protein from Mycobacterium leprae Cosmid B577 (821 aa), FASTA scores: opt: 4547, E(): 6.3e-208, (88.05% identity in 769 aa overlap) (see Basu et al., 1996). Also equivalent to a predicted homologous protein from Mycobacterium smegmatis. Also similar to others e.g. Q9XA34|SCH17.14 from Streptomyces coelicolor (428 aa; fragment), FASTA scores: opt: 727, E(): 2.3e-27, (36.55% identity in 413 aa overlap); Q9F9V7|PONA from Mycobacterium smegmatis (715 aa), FASTA scores: opt: 446, E(): 6.6e-14, (27.65% identity in 771 aa overlap) (see Billman-Jacobe et al., 1999); Q9CCY4|PONA|ML2688 from Mycobacterium leprae (708 aa), FASTA scores: opt: 413, E(): 2.4e-12, (26.8% identity in 660 aa overlap); Q9X6W0|PONB|MRCB|PA4700 from Pseudomonas aeruginosa (774 aa), FASTA scores: opt: 398, E(): 1.3e-11, (27.2% identity in 666 aa overlap); P45345|PBPB_HAEIN|MRCB|PONB|HI1725 (781 aa), FASTA scores: opt: 380, E(): 9.4e-11, (28.6% identity in 601 aa overlap); etc. Also similar to P71707|PONA1|Rv0050|MTCY21.13 probable bifunctional penicillin-binding protein 1A/1B (PBP1) from Mycobacterium tuberculosis (678 aa) FASTA scores: opt: 372, E(): 2e-10, (28.35% identity in 769 aa overlap). Seems to belong to the transglycosylase family in the N-terminal section, and to the transpeptidase family in the C-terminal section. |
| Functional category | Cell wall and cell processes |
| Proteomics | Identified in the membrane fraction of M. tuberculosis H37Rv using 1D-SDS-PAGE and uLC-MS/MS; predicted transmembrane protein (See Gu et al., 2003). Identified in the cytosol and cell membrane fraction of M. tuberculosis H37Rv using 2DLC/MS (See Mawuenyega et al., 2005). Predicted secreted protein - identified in culture filtrates of M. tuberculosis H37Rv; signal peptide predicted (See Malen et al., 2007). Putative glycoprotein identified by LC/ESI-MS/MS in the culture filtrate of M. tuberculosis H37Rv (See Gonzalez-Zamorano et al., 2009). Identified by mass spectrometry in Triton X-114 extracts of M. tuberculosis H37Rv (See Malen et al., 2010). Identified by mass spectrometry in the culture filtrate, membrane protein fraction, and whole cell lysates of M. tuberculosis H37Rv; enriched in the membrane fraction and predicted N-terminal signal peptide is uncleaved (See de Souza et al., 2011). |
| Mutant | Non-essential gene for in vitro growth of H37Rv in a MtbYM rich medium, by Himar1 transposon mutagenesis (see Minato et al. 2019). Disruption of this gene provides a growth advantage 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 CDC1551 strain (see Lamichhane et al., 2003). Required for survival in primary murine macrophages, by transposon site hybridization (TraSH) in H37Rv (See Rengarajan et al., 2005). M. tuberculosis H37Rv transposon mutant is sensitive to pH 4.5 in 7H9 with Tween or Tyloxapol, but not phosphate-citrate buffer with Tyloxapol (See Vandal et al., 2008); mutant is mildly attenuated in C57BL/6 mice (See Vandal et al., 2009). Check for mutants available at TARGET website |
Coordinates
| Type | Start | End | Orientation |
|---|---|---|---|
| CDS | 4121916 | 4124348 | + |
Genomic sequence
Feature type
Upstream flanking region (bp)
Downstream flanking region (bp)
Update
Protein sequence
>Mycobacterium tuberculosis H37Rv|Rv3682|ponA2
MPERLPAAITVLKLAGCCLLASVVATALTFPFAGGLGLMSNRASEVVANGSAQLLEGQVPAVSTMVDAKGNTIAWLYSQRRFEVPSDKIANTMKLAIVSIEDKRFADHSGVDWKGTLTGLAGYASGDLDTRGGSTLEQQYVKNYQLLVTAQTDAEKRAAVETTPARKLREIRMALTLDKTFTKSEILTRYLNLVSFGNNSFGVQDAAQTYFGINASDLNWQQAALLAGMVQSTSTLNPYTNPDGALARRNVVLDTMIENLPGEAEALRAAKAEPLGVLPQPNELPRGCIAAGDRAFFCDYVQEYLSRAGISKEQVATGGYLIRTTLDPEVQAPVKAAIDKYASPNLAGISSVMSVIKPGKDAHKVLAMASNRKYGLDLEAGETMRPQPFSLVGDGAGSIFKIFTTAAALDMGMGINAQLDVPPRFQAKGLGSGGAKGCPKETWCVVNAGNYRGSMNVTDALATSPNTAFAKLISQVGVGRAVDMAIKLGLRSYANPGTARDYNPDSNESLADFVKRQNLGSFTLGPIELNALELSNVAATLASGGVWCPPNPIDQLIDRNGNEVAVTTETCDQVVPAGLANTLANAMSKDAVGSGTAAGSAGAAGWDLPMSGKTGTTEAHRSAGFVGFTNRYAAANYIYDDSSSPTDLCSGPLRHCGSGDLYGGNEPSRTWFAAMKPIANNFGEVQLPPTDPRYVDGAPGSRVPSVAGLDVDAARQRLKDAGFQVADQTNSVNSSAKYGEVVGTSPSGQTIPGSIVTIQISNGIPPAPPPPPLPEDGGPPPPVGSQVVEIPGLPPITIPLLAPPPPAPPP
Bibliography
- Basu J et al. [1996]. Identification and overexpression in Escherichia coli of a Mycobacterium leprae gene, pon1, encoding a high-molecular-mass class A penicillin-binding protein, PBP1. Homolog Product Function
- Billman-Jacobe H et al. [1999]. Characterization of a Mycobacterium smegmatis mutant lacking penicillin binding protein 1. Homolog Mutant
- Keer J, Smeulders MJ, Gray KM and Williams HD [2000]. Mutants of Mycobacterium smegmatis impaired in stationary-phase survival. Homolog Mutant Function
- Lamichhane G et al. [2003]. A postgenomic method for predicting essential genes at subsaturation levels of mutagenesis: application to Mycobacterium tuberculosis. Mutant
- 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
- Mawuenyega KG et al. [2005]. Mycobacterium tuberculosis functional network analysis by global subcellular protein profiling. Proteomics
- Målen H et al. [2007]. Comprehensive analysis of exported proteins from Mycobacterium tuberculosis H37Rv. Proteomics
- Vandal OH et al. [2008]. A membrane protein preserves intrabacterial pH in intraphagosomal Mycobacterium tuberculosis. Mutant
- Vandal OH et al. [2009]. Acid-susceptible mutants of Mycobacterium tuberculosis share hypersusceptibility to cell wall and oxidative stress and to the host environment. Mutant
- González-Zamorano M et al. [2009]. Mycobacterium tuberculosis glycoproteomics based on ConA-lectin affinity capture of mannosylated proteins. Proteomics
- 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
- 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
