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. Author manuscript; available in PMC: 2020 Apr 2.
Published in final edited form as: Development. 2017 Aug 1;144(15):2719–2729. doi: 10.1242/dev.132605

Figure 1. Classification of transposable elements.

Figure 1

The different classes of transposable elements and examples of their structures are depicted. LTR, long terminal repeat; Gag, group-specific antigen; Pol, polymerase; Env, envelope protein; UTR, untranslated region; ORF, open reading frame; (A)n, poly(A) tail; A and B, component sequences of the RNA polymerase III promoter; AR, the adenosine-rich segment separating the 7SL monomers; VNTR, variable number target repeats; ITR, inverted terminal repeat.