Difference between revisions of "PMID:350837"
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!|Phenotype of!!Taxon Information!!Genotype Information (if known)!!Condition Information!!OMP ID!!OMP Term Name!!ECO ID!!ECO Term Name!!Notes!!Status | !|Phenotype of!!Taxon Information!!Genotype Information (if known)!!Condition Information!!OMP ID!!OMP Term Name!!ECO ID!!ECO Term Name!!Notes!!Status | ||
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enzyme activity phenotype | enzyme activity phenotype | ||
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''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 42 <sup>o</sup> C. Also seen in strain BD13. See table 2. | ''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 42 <sup>o</sup> C. Also seen in strain BD13. See table 2. | ||
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enzyme activity phenotype | enzyme activity phenotype | ||
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| − | in | + | in vivo assay evidence |
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''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 45 <sup>o</sup> C, roughly 95 percent compared to the wild type. See figure 1 for full results. | ''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 45 <sup>o</sup> C, roughly 95 percent compared to the wild type. See figure 1 for full results. | ||
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enzyme activity phenotype | enzyme activity phenotype | ||
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| − | in | + | in vivo assay evidence |
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''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 45 <sup>o</sup> C, roughly 95 percent compared to the wild type. See figure 1 for full results. | ''ung'' mutation caused reduced Uracil-DNA glycosylase activity at 45 <sup>o</sup> C, roughly 95 percent compared to the wild type. See figure 1 for full results. | ||
Latest revision as of 13:42, 14 December 2012
| Citation |
Duncan, BK , Rockstroh, PA and Warner, HR (1978) Escherichia coli K-12 mutants deficient in uracil-DNA glycosylase. J. Bacteriol. 134:1039-45 |
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| Abstract |
A new assay specific for uracil-DNA glycosylase is described, Escherichia coli mutants partially and totally deficient in uracil-DNA glycosylase activity have been isolated by using this assay in mass-screening procedures. These have been designated ung mutants. The ung gene maps between tyrA and nadB on the E. coli chromosome. T4 phage containing uracil in their DNA grow on the most glycosylase-deficient hosts but are unable to grow on wild-type bacteria. This provides a simple spot test for the ung genotype. The ung mutants show slightly higher rates of spontaneous mutation to antibiotic resistance. Taken together, these results suggest a central role for uracil-DNA glycosylase in the initiation of an excision repair pathway for the exclusion of uracil from DNA. |
| Links | |
| Keywords |
Chromosome Mapping; Coliphages/analysis; Coliphages/growth & development; DNA Repair; DNA, Viral/analysis; Deoxyuracil Nucleotides; Escherichia coli/genetics; Genes; Mutation; N-Glycosyl Hydrolases/genetics; Uracil/analysis |
| edit table |
Main Points of the Paper
Please summarize the main points of the paper.
Materials and Methods Used
Please list the materials and methods used in this paper (strains, plasmids, antibodies, etc).
Phenotype Annotations
See Help:AnnotationTable for details on how to edit this table.
<protect>
| Phenotype of | Taxon Information | Genotype Information (if known) | Condition Information | OMP ID | OMP Term Name | ECO ID | ECO Term Name | Notes | Status |
|---|---|---|---|---|---|---|---|---|---|
|
a mutation or genetic difference within a strain |
|
|
|
0000298 |
enzyme activity phenotype |
0000178 |
in vivo assay evidence |
ung mutation caused reduced Uracil-DNA glycosylase activity at 42 o C. Also seen in strain BD13. See table 2. |
|
|
a mutation or genetic difference within a strain |
|
|
|
0000298 |
enzyme activity phenotype |
0000178 |
in vivo assay evidence |
ung mutation caused reduced Uracil-DNA glycosylase activity at 45 o C, roughly 95 percent compared to the wild type. See figure 1 for full results. |
|
|
a mutation or genetic difference within a strain |
|
|
|
0000298 |
enzyme activity phenotype |
0000178 |
in vivo assay evidence |
ung mutation caused reduced Uracil-DNA glycosylase activity at 45 o C, roughly 95 percent compared to the wild type. See figure 1 for full results. |
|
| edit table |
</protect>
Notes
References
See Help:References for how to manage references in omp dev.
