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Biomedical subjects

H Berger

Publications and source records attributed to H Berger.

At least 433 records · Page 24Linked to original sources
PubMed1971

Replication and recombination in ligase-deficient rII bacteriophage T4D.

Deoxyribonucleic acid replication and genetic recombination were investigated after infection of Escherichia coli with ligase-deficient rII bacteriophage T4D. The major observations are: (i) deoxyribonucleic acid synthesis is discontinuous, (ii) the discontinuities are more slowly repaired than in wild-type infection, (iii) host ligase is required for viability, and (iv) genetic recombination is increased.

Centrifugation, Density Gradient↗
PubMed1970

Changes in the physical state of DNA during replication in regenerating liver of the rat.

Evidence is presented which demonstrates that DNA synthesis in regenerating liver is discontinuous. In pulse-labeling experiments from 30 seconds to 10 minutes, the earliest detectable intermediate in DNA replication appears to be double-stranded DNA which has a significant degree of single-stranded character probably due to the existence of gaps in the newly synthesized strand. The label begins to move into completely double-stranded DNA 10-30 minutes after the commencement of labeling. The average molecular weight of the single-stranded "unit" of DNA replication is determined to be approximately 7.5 million. Smaller units may be produced but not observed as a result of imperfect synchronization of DNA synthesis.

Animals↗