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In vivo methylation of replicating bacteriophage φX174 DNA

Razin, Aharon and Sedat, John W. and Sinsheimer, Robert L. (1973) In vivo methylation of replicating bacteriophage φX174 DNA. Journal of Molecular Biology, 78 (3). pp. 417-425. ISSN 0022-2836. doi:10.1016/0022-2836(73)90465-8.

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The pattern of DNA methylation during the infection of Escherichia coli C cells with bacteriophage φX174, has been studied. In vivo methylated DNA was isolated and analyzed using the following techniques: velocity sedimentation through neutral and alkaline sucrose gradients, isopycnic analysis, chromatography on benzoylated DBAE-cellulose columns and specific enzymatic digestion. All these analytical methods indicated that the DNA molecules that are methylated during the process of phage φX DNA replication are the replicating intermediates composed of a circular complementary strand and a viral strand larger than one genome length. It is concluded that methylation occurs on the nascent DNA strand of the replicating intermediates involved in the synthesis of progeny single-stranded DNA.

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Additional Information:© 1973 Elsevier Ltd. Received 19 December 1972, Revised 11 April 1973. This research was supported in part by a grant from the U.S. Public Health Service, GM13554, and a postdoctoral fellowship, 1F05 TW1348 to one of us (A.R.). A part of this study was carried out in the Department of Cellular Biochemistry. The Hebrew University-Hadassah Medical School, Jerusalem, Israel, and supported by the Joint Research Fund of the Hebrew University and Hadassah.
Funding AgencyGrant Number
U.S. Public Health Service (USPHS)GM 13554
NIH Postdoctoral Fellowship1F05 TW1348
Hebrew UniversityUNSPECIFIED
Hadassah Medical SchoolUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20160803-123956450
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Official Citation:Aharon Razin, John W. Sedat, Robert L. Sinsheimer, In vivo methylation of replicating bacteriophage φX174 DNA, Journal of Molecular Biology, Volume 78, Issue 3, 15 August 1973, Pages 417-425, ISSN 0022-2836, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69414
Deposited By: Ruth Sustaita
Deposited On:04 Aug 2016 21:52
Last Modified:11 Nov 2021 04:13

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