Ontology highlight
ABSTRACT:
ORGANISM(S): Xenopus (Silurana) tropicalis
SUBMITTER: Nicolas Robine
PROVIDER: E-GEOD-19173 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Current biology : CB 20091201 24
<h4>Background</h4>Piwi-interacting RNAs (piRNAs) are approximately 24-30 nucleotide regulatory RNAs that are abundant in animal gonads and early embryos. The best-characterized piRNAs mediate a conserved pathway that restricts transposable elements, and these frequently engage a "ping-pong" amplification loop. Certain stages of mammalian testis also accumulate abundant piRNAs of unknown function, which derive from noncoding RNAs that are depleted in transposable element content and do not engag ...[more]