Nuclear matrix is a complex intranuclear network supposed to be involved in the various nuclear functions. In order to identify the nuclear matrix proteins, we isolated a cDNA clone from a human placenta cDNA library. This clone was partially represented a known cDNA clone HA1237. HA1237 encoded a 631-amino-acid peptide, which we designated NXP-1. NXP-1 was related to yeast Rad21/Scc1/Mcd1, Xenopus XRAD21, and mouse PW29, and identical with HR21spA isolated from a human testis cDNA library. We developed a polyclonal antibody to the purified NXP-1 bacterially expressed as a fusion protein with GST. Western blot analysis with anti-NXP-1 polyclonal antibody showed nuclear matrix localization of NXP-1 in HeLa cells. Indirect immunofluorescence staining also showed nuclear and nuclear matrix localization of the NXP-1. Results of in vitro binding assays employing nuclear matrix preparations indicated that the N-terminal region (16-128 amino acid) of NXP-1 has an important role in nuclear matrix distribution.
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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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