A primase activity which permits DNA synthesis by yeast DNA polymerase I on a single-stranded circular phi X174 or M13 DNA or on poly(dT)n has been extensively purified by fractionation of a yeast enzyme extract which supports in vitro replication of the yeast 2-microns plasmid DNA (Kojo, H., Greenberg, B. D., and Sugino, A. (1981) Proc. Natl. Acad. Sci. U.S.A. 78, 7261-7265). Most of this DNA primase activity was separated from DNA polymerase activity, although a small amount remained associated with DNA polymerase I. The primase, active as a monomer, has a molecular weight of about 60,000. The primase synthesizes oligoribonucleotides of discrete size, mainly eight or nine nucleotides, in the presence of single-stranded template DNA and ribonucleoside 5'-triphosphates; it utilizes deoxyribonucleoside 5'-triphosphates as substrate with 10-fold lower efficiency. Product size, chromatographic properties, alpha-amanitin resistance, and molecular weight of the primase activity distinguish it from RNA polymerases I, II, and III. The DNA products synthesized by both primase and DNA polymerase I on a single-stranded DNA template were 200-500 nucleotides long and covalently linked to oligoribonucleotides at their 5'-ends. Addition of yeast single-stranded DNA-binding protein (Arendes, J., Kim, K. C., and Sugino, A. (1983) Proc. Natl. Acad. Sci. U.S. A. 80, 673-677) stimulated the DNA synthesis 2-3-fold.
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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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