Table 1 Comparison of small RNAs putatively-targeting transposons in S. ratti with piRNAs in C. elegans and D. melanogaster.
From: piRNA-like small RNAs target transposable elements in a Clade IV parasitic nematode
piRNA (C. elegans) | 21–22U (S. ratti) | 27GA (S. ratti) | piRNA (D. melanogaster) | |
|---|---|---|---|---|
Length (nt) | 21 | 21–22 | 27 | 24–30 |
5′ base | U | U | G/A | U |
5′ modification | Monophosphate | Monophosphate | Polyphosphate? | Monophosphate |
Clustered in genome | Yes | Yes | No | Yes |
Overlapping loci | Yes | Yes | No | Yes |
Upstream motif | Yes | No | No | No |
AU rich downstream sequence | Yes | Yes | No | No |
