Mutations in the XNP gene result in different inherited disorders, including the ATR-X syndrome which is characterized by mental retardation (MR) associated with alpha-thalaessemia. Amino acid sequence analysis revealed that the XNP protein is a new member of the SNF2-like family, which comprises numerous members involved in a broad range of biological functions: transcriptional regulation, DNA repair and chromosome segregation. Since experiments on fibroblasts from ATR-X patients have provided no evidence for either a DNA repair defect or abnormal chromosome breakage or segregation, it seems more likely that the XNP protein is somehow involved in regulation of gene expression. Recent genetic and biochemical studies have led to the emerging concept that SNF2-like proteins are components of a large protein complex which may exert its functions by modulating chromatin structure. To investigate whether XNP could mediate the activity of gene-specific activators through chromatin remodelling, we performed a yeast two-hybrid analysis using XNP and several human heterochromatin-associated proteins. We found a specific interaction between the XNP and the EZH2 proteins. In light of these observations, we discuss how the XNP protein may regulate gene transcription at the chromatin level.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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