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. 2021 Mar 15;13(1):1896874. doi: 10.1080/20002297.2021.1896874

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© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — A schematic representation of the structure of Tn916 and the Tn916-Tn1545 family elements. The image in A. is Tn916 from E. faecalis DS16 (accession number U09422.1); B. illustrates Tn6815 from S. mitis SM28 (accession number LR828204.); and C. Tn6816 from S. constellatus SC99 (accession number LR828206.1). The element Tn6815 carries the erm(B) hin_1, orf3 and TnpA Transposase from Tn917 inserted between two truncated regions of orf9 (orft.1 and orft.2). The element in S. constellatus SC99 has been designated Tn6816 and it carries group II intron reverse transcriptase/maturase, truncated orf21 and orf22 and a complete copy of orf21 inserted upstream of orf20