We report the sequence of a 12 kilobase region spanning the centromere of Saccharomyces cerevisiae chromosome II. The sequence from the left arm includes genes for histones H2A and H2B. The sequence from the right arm includes a gene that probably encodes a novel trehalase, as well as the COQ1 gene (for an enzyme involved in coenzyme Q biosynthesis), and an open reading frame with significant similarity to bacterial genes of unknown function. The trehalase gene (YBR0106) on chromosome II is located beside the centromere and transcribed towards it. This is identical to the arrangement of the neutral trehalase gene (NTH1) beside the centromere of chromosome IV. The centromere regions of chromosomes II and IV may therefore have arisen through a duplication of the centromere region of an ancestral chromosome. The YBR0106 and NTH1 proteins are 77% identical in predicted amino acid sequence, but there is no pronounced sequence similarity between the two centromeres (CEN2 and CEN4) outside of the universally conserved CDE I and CDE III elements. The genes flanking the centromere and trehalase genes differ between the two chromosomes, so the similarity between chromosomes II and IV may be less extensive than that recently reported between chromosomes III and XIV.
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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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