Overview

helitron


Show Summary Details

Quick Reference

A DNA segment that transposes as a rolling-circle transposon. Unlike other transposons (q.v.), helitrons lack terminal repeats and do not duplicate the insertion sites of their hosts. They carry 5′ TC and 3′ CTTR termini and are always inserted between nucleotides A and T of the host DNA. Helitrons were uncovered by an in silico analysis of genomic sequences from Arabidopsis, rice, and Caenorhabditis, and a helitron was later isolated as an insertion in a mutated Sh2 gene of Zea mays. See Chronology, 2001, Kapitonov and Jura; rolling circle.

Subjects: Genetics and Genomics.


Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.