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Structure of the Chlorella Zepp retrotransposon: nested Zepp clusters in the genome

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Abstract

Zepp elements found in the telomeric region of Chlorella chromosomes show the characteristic features of non-viral (LINE-like) retrotransposons, including a poly(A) tail, 5′ truncations, a retroviral reverse transcriptase-like ORF and flanking target duplications. We have isolated and characterized a full-length Zepp element (8943 bp long) from Chlorella chromosome V. Some peculiar features of this element, including nested integration, two ORF structures, a long 3′ noncoding region and a possible promoter region are compared with those of the Drosophila telomeric retrotransposons HeT-A and TART. The Chlorella chromosome-Zepp system appears to represent an intermediate stage between canonical telomerase-telomeres and Drosophila retrotransposon-telomeres.

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Received: 28 January 1998 / Accepted: 26 April 1998

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Noutoshi, Y., Arai, R., Fujie, M. et al. Structure of the Chlorella Zepp retrotransposon: nested Zepp clusters in the genome. Mol Gen Genet 259, 256–263 (1998). https://doi.org/10.1007/s004380050811

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  • DOI: https://doi.org/10.1007/s004380050811

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