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Long-read sequencing infers a mechanism for copy number variation of template for alternative lengthening of telomeres in a wild C. elegans strain
Template for alternative lengthening of telomeres 1 (TALT1) is a specific sequence used to protect chromosomal ends from telomere damage first identified in the CB4856 strain of Caenorhabditis elegans . Here we assembled the genome of DL226, a wild strain with one more copy of TALT1-like sequences i...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Caltech Library
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066243/ https://www.ncbi.nlm.nih.gov/pubmed/35622501 http://dx.doi.org/10.17912/micropub.biology.000563 |
Sumario: | Template for alternative lengthening of telomeres 1 (TALT1) is a specific sequence used to protect chromosomal ends from telomere damage first identified in the CB4856 strain of Caenorhabditis elegans . Here we assembled the genome of DL226, a wild strain with one more copy of TALT1-like sequences in its genome compared to those of CB4856, using long-read DNA sequencing. We found that a five-copy array of short telomeric repeats and TALT1s present in CB4856 were changed to a six-copy array due to the duplication of the third copy; there was an additional damage-repair trace in the new short telomeric repeat near the newly replicated TALT1. |
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