Brockes, JP and Brown, PR and Murray, K (1972) The deoxyribonucleic acid modification enzyme of bacteriophage P1. Biochem J , 127 (1) 1 - 10.
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Abstract
The bacteriophage P1 modification enzyme, assayed by the specific methylation of unmodified bacteriophage 82 DNA, has been purified 500-fold from a bacteriophage P1 lysogen of Escherichia coli. The enzyme catalyses the incorporation of approximately 20-24 methyl groups per bacteriophage 82 DNA molecule. The sole product of methylation is 6-methylaminopurine. Methylation of unmodified bacteriophage DNA confers protection against a challenge by purified bacteriophage P1 restriction enzyme. The pH optimum is 6.0-6.25: the apparent K(m) for S-adenosyl-l-methionine is 5x10(-6)m.
| Type: | Article |
|---|---|
| Title: | The deoxyribonucleic acid modification enzyme of bacteriophage P1. |
| Location: | ENGLAND |
| Language: | English |
| Additional information: | PMCID: PMC1178554 |
| Keywords: | Ammonium Sulfate, Catalase, Centrifugation, Zonal, Chromatography, DEAE-Cellulose, Coliphages, DNA, Viral, Dialysis, Hydrogen-Ion Concentration, Hydrolysis, Methylation, Methyltransferases, Morpholines, Purines, S-Adenosylmethionine, Sulfonic Acids, Tritium |
| UCL classification: | UCL > School of Life and Medical Sciences > Faculty of Life Sciences > Biosciences (Division of) > Structural and Molecular Biology |
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