We examined cDNAs of the catalytic subunit of DNA polymerase ␣ (185 kDa), the 70 kDa subunit of replication protein A (single-stranded DNA-binding protein) and the 140 kDa subunit of replication factor C for mutations. Surgical specimens from 12 patients with sporadic colon cancer and normal mucosae
Structure and function in the nucleus: Subnuclear trafficking of DNA replication factors
✍ Scribed by M. Cristina Cardoso; Anje Sporbert; Heinrich Leonhardt
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 253 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0730-2312
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✦ Synopsis
The traditional view of the eukaryotic cell nucleus as a more or less amorphous milieu in which proteins and nucleic acids are freely floating has been challenged by an ever increasing number of reports uncovering highly organized structures where biological processes are concentrated together with their corresponding factors. The identification and utilization of protein domains that are necessary and sufficient for targeting to different subnuclear compartments have begun to elucidate the molecular principles underlying this structural organization and its dynamic behavior. The combination of biochemical, cell biology, and biophysical approaches to study nuclear structure and function should help to elucidate how these higher-order structures organize and coordinate countless enzymatic activities in time and space within the mammalian nucleus.
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