The development of bacteriophages SPP1 and phi 29 has been studied in several B. sutilis mutants defective in host DNA replication, under non permissive conditions. Several gene products, involved in the synthesis of host DNA, are required for phi 29 replication, while SPP1 seems to require only the
Specific labelling of replicating SPP1 DNA
β Scribed by K. J. Burger; T. A. Trautner
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 635 KB
- Volume
- 166
- Category
- Article
- ISSN
- 1617-4615
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β¦ Synopsis
Specific labelling of replicating bacteriophage SPP1 DNA can be achieved by infection at nonpermissive temperature of a B. subtilis strain carrying the initation mutation dnaB ts134. Under these conditions host DNA synthesis is reduced by 90 to 95%. This technique was used to identify cistrons of SPP1 involved in phage DNA synthesis and to define intermediates in SPP1 replication.
π SIMILAR VOLUMES
A fast sedimenting complex was isolated from B. subtilis cells infected with bacteriophage SPP1 by renografin centrifugation. This complex was identified as membrane bound parental and replicating SPP1 DNA. Synthesis of SPP1 DNA takes place in close association with the membrane. This newly synthesi
## Abstract A new concept for sequenceβspecific labeling of DNA by using chemically modified cofactors for DNA methyltransferases is presented. Replacement of the amino acid side chain of the natural cofactor __S__βadenosylβLβmethionine with an aziridine group leads to a cofactor suitable for DNA m