Carboxypeptidase Y is widely used in peptide sequencing and mass spectrometry. PRC1 coding for proteinase C from Saccharomyces cerevisiae was expressed in Pichia pastoris GS115 as procarboxypeptidase Y with a yield of ~605 mg/l in shake-flasks after 168 h induction with 1 % (v/v) methanol. This precursor of carboxypeptidase Y was cleaved by endogenous proteinases of P. pastoris and released into the fermentation broth as active carboxypeptidase Y within 2 weeks at 10 °C, which facilitated the preparation of mature carboxypeptidase Y. The recombinant enzyme was purified. It was optimally active at 30 °C and pH 6.0, with an optimal activity of ~305 U/mg using benzyloxycarbonyl-L-phenylalanyl-L-leucine as substrate. This is the first report about high-level expression and activation of carboxypeptidase Y in P. pastoris.
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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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