Gene Frequency Analysis of Chromosomal Initiation Sites in Bacillus subtilis after Ultraviolet Light or X-Ray Exposure
AUTOR(ES)
Billen, Daniel
RESUMO
Bacillus subtilis was exposed to ultraviolet light (UV) or X rays, and gene frequency analysis was used to study the location of initiation sites of postirradiation deoxyribonucleic acid (DNA) synthesis. It was found that DNA synthesis resumes primarily from the origin after UV exposure. With X irradiation, the origin is not selectively replicated. Elevated origin-to-terminal marker ratios observed after UV exposure of exponentially growing cells were interpreted as evidence for selective UV resistance of the replicative origin region of the bacterial chromosome.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=247288Documentos Relacionados
- Deoxyribonucleic Acid Repair Replication after Ultraviolet Light or X-Ray Exposure of Bacteria
- Ultraviolet and X-Ray Induced Chromosomal Aberrations in Wheat
- An Analysis of X-Ray Induced Chromosomal Aberrations in Tradescantia
- Preliminary X-ray crystallographic studies of Bacillus subtilis SpeA protein
- X-Ray and Ultraviolet Studies on Pollen Tube Chromosomes. I. the Effect of Ultraviolet (2537 Å) on X-Ray-Induced Chromosomal Aberrations