A newly recognized peptidase, designated proteinase yscD, was purified from the yeast Saccharomyces cerevisiae. The enzyme cleaves the Pro-Phe bond of the synthetic peptide substrate Bz-Pro-Phe-Arg-4-nitroanilide and the Ala-Ala bond of Ac-Ala-Ala-Pro-Ala-4-nitroanilide, Ac-Ala-Ala-Pro-Phe-4-nitroanilide, and MeO-Suc-Ala-Ala-Pro-Met-4-nitroanilide with high efficiency (Bz-, Ac-, and MeO-Suc are defined as benzoyl, acetyl, and methoxy-succinyl, respectively). [3H]Methylcasein does not serve as a substrate. Optimum pH for cleavage of Bz-Pro-Phe-Arg-4-nitroanilide is in the range of 6.5 to 7; for Ac-Ala-Ala-Pro-Ala-4-nitroanilide the range is between 5.75 and 6. For MeO-Suc-Ala-Ala-Pro-Met-4-nitroanilide the pH optimum was found to be 5.5. The purified enzyme has an apparent Stokes radius of Rs = 37.9 A as judged by gel chromatography. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis indicates a molecular weight of approximately 83,000 for the enzyme. Mercurials and EDTA were found to be potent inhibitors of proteinase yscD activity.
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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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