The structure of the catalytic domain of human memapsin 2 bound to an inhibitor OM00-3 (Glu-Leu-Asp-LeuAla-Val-Glu-Phe, K(i) = 0.3 nM, the asterisk denotes the hydroxyethylene transition-state isostere) has been determined at 2.1 A resolution. Uniquely defined in the structure are the locations of S(3)' and S(4)' subsites, which were not identified in the previous structure of memapsin 2 in complex with the inhibitor OM99-2 (Glu-Val-Asn-LeuAla-Ala-Glu-Phe, K(i) = 1 nM). Different binding modes for the P(2) and P(4) side chains are also observed. These new structural elements are useful for the design of new inhibitors. The structural and kinetic data indicate that the replacement of the P(2)' alanine in OM99-2 with a valine in OM00-3 stabilizes the binding of P(3)' and P(4)'.
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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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