Cloned (Comment) | Organism |
---|---|
gene rbr2, generation of transgenic lines in which RBR-2::GFP expression is driven by the rbr-2 promoter showing that RBR-2 is ubiquitously expressed in embryos and larvae, gene rbr-2 interacts with many neuronal genes, overview | Caenorhabditis elegans |
Protein Variants | Comment | Organism |
---|---|---|
additional information | generation of a rbr-2(tm3141) mutant, expression of wild-type rbr-2 gene completely rescues the PVQ defects | Caenorhabditis elegans |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
NURF-1 | an H3K4me3-binding protein and member of the chromatin-remodeling complex NURF, is required for promoting aberrant wsp-1 transcription in rbr-2 mutants and its ablation restores wild-type expression of wsp-1 and axon guidance | Caenorhabditis elegans |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
nucleus | - |
Caenorhabditis elegans | 5634 | - |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
histone H3 N6,N6,N6-trimethyl-L-lysine4 + 2-oxoglutarate + O2 | Caenorhabditis elegans | - |
histone H3 N6,N6-dimethyl-L-lysine4 + succinate + formaldehyde + CO2 | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Caenorhabditis elegans | Q23541 | - |
- |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
embryo | - |
Caenorhabditis elegans | - |
larva | - |
Caenorhabditis elegans | - |
additional information | RBR-2 is ubiquitously expressed in embryos and larvae | Caenorhabditis elegans | - |
nervous system | - |
Caenorhabditis elegans | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
histone H3 N6,N6,N6-trimethyl-L-lysine4 + 2-oxoglutarate + O2 | - |
Caenorhabditis elegans | histone H3 N6,N6-dimethyl-L-lysine4 + succinate + formaldehyde + CO2 | - |
? |
Synonyms | Comment | Organism |
---|---|---|
H3K4me3/2 histone demethylase | - |
Caenorhabditis elegans |
RBR-2 | - |
Caenorhabditis elegans |
General Information | Comment | Organism |
---|---|---|
evolution | RBR-2 is the sole homolog of the KDM5 family of H3K4me3/2 demethylases in Caenorhabditis elegans | Caenorhabditis elegans |
malfunction | the dynamic regulation of histone modifications is important for modulating transcriptional programs during development. Aberrant H3K4 methylation is associated with neurological disorders. Loss of rbr-2 results in increased levels of H3K4me3 at the transcriptional start site of wsp-1, with concomitant higher wsp-1 expression responsible for defective axon guidance, overexpression of WSP-1 mimics rbr-2 loss, and its depletion restores normal axon guidance in rbr-2 mutants, phenotypes in rbr-2(tm3141) mutants, overview. Re-expression of WSP-1 in rbr-2/wsp-1 double mutants results in a significant increase of PVQ defects | Caenorhabditis elegans |
metabolism | NURF-1, an H3K4me3-binding protein and member of the chromatin-remodeling complex NURF, is required for promoting aberrant wsp-1 transcription in rbr-2 mutants and its ablation restores wild-type expression of wsp-1 and axon guidance | Caenorhabditis elegans |
physiological function | the H3K4me3/2 histone demethylase RBR-2 is required during embryogenesis in the nervous system to ensure correct axon guidance. RBR-2 controls axon guidance by repressing the actin-remodeling gene wsp-1. RBR-2 is essential for establishing correct axon guidance of the PVQ neurons during embryonic development, but it does not play any role in its maintenance. Role of rbr-2 in neuronal development, role of H3K4me3 readers in axon patterning, and epigenetic regulation of transcription. RBR-2 is required specifically in the nervous system (F25B3.3 promoter), but its presence in hypodermal cells (dpy-7 promoter) and in muscles(myo-3 promoter) is not essential | Caenorhabditis elegans |