Structure of nascent replicative form DNA of coliphage M13

Journal Article · Sun Jan 01 04:00:00 EST 1978 · Proc. Natl. Acad. Sci. U.S.A.; (United States)

DOI:https://doi.org/10.1073/pnas.75.1.153· OSTI ID:6645800

Dasgupta, S; Mitra, S

Nascent replicative form type II (RFII) DNA of coliphage M13 synthesized in an Escherichia coli mutant deficient in the 5' ..-->.. 3' exonuclease associated with DNA polymerase I contains ribonucleotides that are retained in the covalently closed RFI DNA sealed in vitro by the joint action of T5 phage DNA polymerase and T4 phage DNA ligase. These RFI molecules are labile to alkali and RNase H, unlike the RFI produced either in vivo or from RFII with E. coli DNA polymerase I and E. coli DNA ligase. The ribonucleotides are located at one site and predominantly in one strand of the nascent RF DNA. Furthermore, these molecules contain multiple small gaps, randomly located, and one large gap in the intracistronic region.

• Research Organization: Univ. of Tennessee-Oak Ridge National Lab., TN
• OSTI ID: 6645800
• Journal Information: Proc. Natl. Acad. Sci. U.S.A.; (United States), Journal Name: Proc. Natl. Acad. Sci. U.S.A.; (United States) Vol. 75:1; ISSN PNASA
• Country of Publication: United States
• Language: English

Related Subjects

550200 -- Biochemistry
550400* -- Genetics
59 BASIC BIOLOGICAL SCIENCES
BACTERIA
BACTERIOPHAGES
BIOLOGY
DNA
DNA REPLICATION
ENZYMES
ESCHERICHIA COLI
GENES
GENETICS
IN VITRO
LIGASES
MICROORGANISMS
MOLECULAR BIOLOGY
MOLECULAR STRUCTURE
MUTANTS
NUCLEASES
NUCLEIC ACID REPLICATION
NUCLEIC ACIDS
NUCLEOTIDES
ORGANIC COMPOUNDS
PARASITES
PHOSPHOTRANSFERASES
POLYMERASES
TRANSFERASES
VIRUSES