RTclass1 is a computational tool that assigns an unclassified non-LTR retrotransposon to one of the known clades of non-LTR retrotransposons based on phylogenetic analysis of a reverse
transcriptase (RT) domain protein sequence encoded by this retrotransposon.
Kapitonov VV, Tempel S, Jurka J Simple and fast classification of non-LTR retrotransposons based on phylogeny of their RT domain protein sequences. Gene, 2009 Dec 15;448(2):207-13Kapitonov VV, Jurka J A universal classification of eukaryotic transposable elements implemented in Repbase. Nat Rev Genet, 2008 May;9(5):411-2; author reply 414