PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18815367-6 2008 Similar to rdr2 in Arabidopsis, in mop1-1, the 24-nucleotide (nt) endogenous heterochromatic short-interfering siRNAs were dramatically reduced, resulting in an enrichment of miRNAs and transacting siRNAs. 24-nucleotide 47-60 RNA-dependent RNA polymerase 2 Arabidopsis thaliana 11-15