Adenylosuccinate synthase (ASS) from Saccharomyces cerevisiae has been shown to bind specifically to the T-rich side of the autonomously replicating sequence (ARS) core consensus sequence [Zeidler, R., Hobert, O., Johannes, L., Faulhammer, H. & Krauss, G. (1993) J. Biol. Chem. 268, 20191-20197]. We have cloned and sequenced the gene for ASS and have studied in detail the enzymatic properties and DNA-binding activity of ASS. The deduced amino acid sequence of the yeast ASS is highly similar to the same enzymes from other sources from which it is however distinguished by its more basic nature. We show that the enzymatic activity of ASS is inhibited in a highly specific manner by the binding of a 44-base DNA oligonucleotide carrying the ARS core consensus sequence. Other nucleic acids, rNTP and dNTP are not able to mimic the specific inhibitory effect. Single-base substitutions in the ARS core sequence lead to a tenfold reduction in inhibition. The inhibition data corroborate the earlier report on the DNA-binding specificity of this enzyme. The homologous enzymes from Escherichia coli and Dictyostelium discoideum do not show specific binding to single-stranded ARS sequences and their enzymatic activity is not influenced by the presence of a 44-base DNA oligonucleotide carrying the ARS core consensus sequence. Treatment of ASS with alkaline phosphatase leads to a loss of DNA binding and to a loss of the inhibition by DNA of the enzymatic activity which suggests that the DNA-binding activity but not the enzymatic activity may be regulated by the phosphorylation status of the protein.
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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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