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. 2011 Feb 9;12:6. doi: 10.1186/1471-2199-12-6

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Copyright ©2011 Ando et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Model of the two-step processing of hairpin RNA with 5' overhangs (RNA-I) by DICER protein. rDICER processes hairpin RNA with 5' overhangs (RNA-I) to dsRNA with 29 nt-5' strand and 23 nt-3' strand after the first cleavage reaction and releases once from the binding site. Then, the dsRNA is bound in the inverse direction with the same or different rDICER molecule and is measured after the anchoring 3' end of the 29-nt strand to generate dsRNA with 23 nt cleaved from the 29-nt strand and 22 nt cleaved from the 23-nt strand. "PAZ" domain of rDICER colored purple; "RIIIa" and "RIIIb" domain of rDICER colored blue. Lightning marks indicate the cleavage sites in the RNA.