nstd105 (Onozawa et al. 2015)
- Organism:
- Human
- Study Type:
- Collection
- Submitter:
- Masahiro Onozawa
- Description:
- We reported a previously unrecognized form of polymorphic insertions, termed Templated Sequence Insertion Polymorphism (TSIP), in which the inserted sequence was templated from a distant genomic region. TSIPs can be grouped into two classes based on nucleotide sequence features at the insertion junctions; Class 1 TSIPs show target site duplication (TSD), polyadenylation, and preference for insertion at a 5’-TTTT/A-3’ sequence, suggesting a LINE-1 based insertion mechanism, whereas class 2 TSIPs show features consistent with repair of a DNA double strand break by non-homologous end joining. We evaluated whole genome sequence from 52 individuals, and identified 171 TSIPs. Mitochondrial sequences were a frequent template for class 2 insertions, used more commonly than any nuclear chromosome. See Variant Summary counts for nstd105 in dbVar Variant Summary.
- Publication(s):
- Onozawa et al. 2015