We have developed a method for the purification in micromole amounts of the trypsin-derived ADP-ribosyl peptide from diphtheria toxin-modified yeast elongation factor 2 (EF-2). EF-2 was partially purified (15 to 20% purity) by ammonium sulfate precipitation and DEAE-Sephadex chromatography. After [3H]ADP-ribosylation by [3H]nad+ and diphtheria toxin, EF-2 was digested with trypsin and a homogeneous [3H]ADP-ribosyl peptide was isolated by chromatography on DEAE-Sephadex and dihydroxyboryl-substituted cellulose. Based on the amount of ADP-ribose acceptor activity in the crude extract, the overall yield of the peptide was 35%. The yeast peptide contains an unusual amino acid (X) which is the site of ADP ribosylation and is apparently identical to the amino acid reported from rat liver EF-2 by Robinson et al. (Robinson, E. A., Hendriksen, O., and Maxwell, E.S. (1974) J. Biol. Chem. 249, 5088-5093). The sequence of the 15-residue yeast peptide was determined to be: Val-Asn-Ile-Leu-Asp-Val-Thr-Leu-His-Ala-Asp-Ala-Ile-X-Arg. The 11 COOH-terminal residues of this peptide and of the homologous 15-residue peptide reported by Maxwell and co-workers from rat liver EF-2 are identical.
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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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