RT Journal
A1 Ganko, Eric W.
A1 Fielman, Kevin T.
A1 McDonald, John F.
T1 Evolutionary History of Cer Elements and Their Impact on the C. elegans Genome
JF Genome Research 
JO Genome Research 
YR 2001 
FD December 01 
VO 11 
IS 12 
SP 2066 
OP 2074 
DO 10.1101/gr.196201 
UL http://genome.cshlp.org/content/11/12/2066.abstract 
AB We report the results of sequence analysis and chromosomal distribution of all distinguishable long terminal repeat (LTR) retrotransposons (Cer elements) in the Caenorhabditis elegans genome. Included in this analysis are all readily recognizable full-length and fragmented elements, as well as solo LTRs. Our results indicate that there are 19 families of Cerelements, some of which display significant subfamily structure.Cer elements can be clustered based on their tRNA primer binding sites (PBSs). These clusters are in concordance with our reverse transcriptase- and LTR-based phylogenies. Although we find that most Cer elements are located in the gene depauperate chromosome ends, some elements are located in or near putative genes and may contribute to gene structure and function. The results of RT-PCR analyses are consistent with this prediction.