UniProtKB - O33348 (RELG_MYCTU)
Protein
Toxin RelG
Gene
relG
Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Status
Functioni
Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity and preferentially cleaves at the 3'-end of purine ribonucleotides (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with cognate antitoxin RelB2 (shown only for M.smegmatis). Overexpression also increases the number of gentamicin-tolerant and levofloxacin-tolerant persister cells.By similarity4 Publications
In combination with cognate antitoxin RelF represses its own promoter. Has been seen to bind DNA in complex with antitoxin RelF but not alone.
GO - Molecular functioni
- DNA binding Source: UniProtKB-KW
- endonuclease activity Source: MTBBASE
GO - Biological processi
- negative regulation of growth Source: MTBBASE
- negative regulation of transcription, DNA-templated Source: MTBBASE
- RNA catabolic process Source: MTBBASE
Keywordsi
Molecular function | DNA-binding, Hydrolase, Nuclease, Repressor |
Biological process | Toxin-antitoxin system, Transcription, Transcription regulation |
Enzyme and pathway databases
BioCyci | MTBH37RV:G185E-7118-MONOMER |
Names & Taxonomyi
Protein namesi | |
Gene namesi | Name:relG Synonyms:relE2 Ordered Locus Names:Rv2866 |
Organismi | Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) |
Taxonomic identifieri | 83332 [NCBI] |
Taxonomic lineagei | Bacteria › Actinobacteria › Corynebacteriales › Mycobacteriaceae › Mycobacterium › Mycobacterium tuberculosis complex › |
Proteomesi |
|
Organism-specific databases
TubercuListi | Rv2866 |
Pathology & Biotechi
Disruption phenotypei
No visible phenotype in culture or upon infection of mice. Significantly fewer persister cells are generated in vitro following exposure to rifampicin and gentamicin, but in infected mice no differences are seen.1 Publication
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000406200 | 1 – 87 | Toxin RelGAdd BLAST | 87 |
Proteomic databases
PaxDbi | O33348 |
PRIDEi | O33348 |
Expressioni
Inductioni
Expressed in log phase cells. Induced by treatment with rifampicin and gentamicin as well as by oxidative, nitrosative and nutritional stress. Induced in the lungs of mice infected for 4 weeks. A member of the relFG operon.2 Publications
Interactioni
Subunit structurei
Interacts with cognate antitoxin RelF, which neutralizes the toxin.
Also interacts with non-cognate antitoxin RelB in vitro, in M.smegmatis this neutralizes the toxicity of this toxin.
1 PublicationProtein-protein interaction databases
DIPi | DIP-60145N |
IntActi | O33348, 1 interactor |
STRINGi | 83332.Rv2866 |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
SMRi | O33348 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | O33348 |
Family & Domainsi
Sequence similaritiesi
Belongs to the RelE toxin family.Curated
Phylogenomic databases
eggNOGi | ENOG4105VG9 Bacteria COG2026 LUCA |
HOGENOMi | HOG000219995 |
InParanoidi | O33348 |
OMAi | EGYWSAR |
PhylomeDBi | O33348 |
Family and domain databases
Gene3Di | 3.30.2310.20, 1 hit |
InterProi | View protein in InterPro IPR007712 RelE/ParE_toxin IPR035093 RelE/ParE_toxin_dom_sf |
Pfami | View protein in Pfam PF05016 ParE_toxin, 1 hit |
SUPFAMi | SSF143011 SSF143011, 1 hit |
i Sequence
Sequence statusi: Complete.
O33348-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MPYTVRFTTT ARRDLHKLPP RILAAVVEFA FGDLSREPLR VGKPLRRELA
60 70 80
GTFSARRGTY RLLYRIDDEH TTVVILRVDH RADIYRR
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AL123456 Genomic DNA Translation: CCP45668.1 |
PIRi | D70886 |
RefSeqi | NP_217382.1, NC_000962.3 WP_003414602.1, NZ_NVQJ01000006.1 |
Genome annotation databases
EnsemblBacteriai | CCP45668; CCP45668; Rv2866 |
GeneIDi | 887450 |
KEGGi | mtu:Rv2866 mtv:RVBD_2866 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AL123456 Genomic DNA Translation: CCP45668.1 |
PIRi | D70886 |
RefSeqi | NP_217382.1, NC_000962.3 WP_003414602.1, NZ_NVQJ01000006.1 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
3G5O | X-ray | 2.00 | B/C | 2-87 | [»] | |
SMRi | O33348 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Protein-protein interaction databases
DIPi | DIP-60145N |
IntActi | O33348, 1 interactor |
STRINGi | 83332.Rv2866 |
Proteomic databases
PaxDbi | O33348 |
PRIDEi | O33348 |
Genome annotation databases
EnsemblBacteriai | CCP45668; CCP45668; Rv2866 |
GeneIDi | 887450 |
KEGGi | mtu:Rv2866 mtv:RVBD_2866 |
Organism-specific databases
TubercuListi | Rv2866 |
Phylogenomic databases
eggNOGi | ENOG4105VG9 Bacteria COG2026 LUCA |
HOGENOMi | HOG000219995 |
InParanoidi | O33348 |
OMAi | EGYWSAR |
PhylomeDBi | O33348 |
Enzyme and pathway databases
BioCyci | MTBH37RV:G185E-7118-MONOMER |
Miscellaneous databases
EvolutionaryTracei | O33348 |
Family and domain databases
Gene3Di | 3.30.2310.20, 1 hit |
InterProi | View protein in InterPro IPR007712 RelE/ParE_toxin IPR035093 RelE/ParE_toxin_dom_sf |
Pfami | View protein in Pfam PF05016 ParE_toxin, 1 hit |
SUPFAMi | SSF143011 SSF143011, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | RELG_MYCTU | |
Accessioni | O33348Primary (citable) accession number: O33348 Secondary accession number(s): L0TDL2 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | April 5, 2011 |
Last sequence update: | January 1, 1998 | |
Last modified: | October 16, 2019 | |
This is version 104 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Prokaryotic Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Complete proteome, Reference proteomeDocuments
- SIMILARITY comments
Index of protein domains and families - Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh
Mycobacterium tuberculosis strains ATCC 25618 / H37Rv and CDC 1551 / Oshkosh: entries and gene names - PDB cross-references
Index of Protein Data Bank (PDB) cross-references