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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kinoshita, K. Chen, X. Honjo, T. |
| Description | Author Affiliation: Chen X ( Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Yoshida Konoe-cho, Sakyo-ku Kyoto 606-8501, Japan.); |
| Abstract | Immunoglobulin class-switch recombination (CSR) gives rise to looped-out circular DNA of a cleaved S segment, which is lost eventually after cell divisions. To understand the molecular mechanism of S region cleavage during CSR, we constructed artificial CSR substrates in which inversion-type CSR takes place to retain the cleaved S segment. Sequencing analyses of recombinant clones of these substrates revealed that varying degrees of deletions and duplications exist at CSR breakpoints, suggesting the involvement of staggered cleavage of the S region in CSR. In addition, mutations frequently found near junctions showed a similar profile of base replacement to Ig somatic hypermutation. These findings suggest that single-strand tails of staggered cleavage may be repaired by error-prone DNA synthesis. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 24 |
| Volume Number | 98 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2001-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Deletion Gene Duplication Genes, Immunoglobulin Immunoglobulin Class Switching Genetics Immunoglobulin Switch Region Immunoglobulin Mu-Chains Recombination, Genetic Animals Cell Line Chromosome Inversion DNA, Complementary Mice Molecular Sequence Data Nucleic Acid Conformation Point Mutation Sequence Analysis, DNA Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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