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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Phillips, J. A. Seeburg, P. H. Vnencak-jones, C. L. Chen, E. Y. |
| Description | Author Affiliation: Vnencak-Jones CL ( Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN 37232.); |
| Abstract | Crossover sites resulting from unequal recombination within the human growth hormone (GH) gene cluster that cause GH1 gene deletions and isolated GH deficiency type 1A were localized in nine patients. In eight unrelated subjects homozygous for 6.7-kilobase (kb) deletions, the breakpoints are within two blocks of highly homologous DNA sequences that lie 5' and 3' to the GH1 gene. In seven of these eight cases, the breakpoints map within a 1250-base-pair (bp) region composed of 300-bp Alu sequences of 86% homology and flanking non-Alu sequences that are 600 and 300 bp in length and are of 96% and 88% homology, respectively. In the eighth patient, the breakpoints are 5' to these Alu repeats and are most likely within a 700-bp region of 96% homologous DNA sequences. In the ninth patient homozygous for a 7.6-kb deletion, the breakpoints are contained within a 29-bp perfect repeat lying 5' to GH1 and the human chorionic somatomammotropin pseudogene (CSHP1). Together, these results indicate that the presence of highly homologous DNA sequences flanking GH1 predispose to recurrent unequal recombinational events presumably through chromosomal misalignment. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 85 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1988-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Chromosome Deletion Deoxyribonucleases, Type II Site-Specific Growth Disorders Genetics Growth Hormone DNA DNA Restriction Enzymes Genes Deficiency Nucleic Acid Hybridization Repetitive Sequences, Nucleic Acid Sequence Homology, Nucleic Acid Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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