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. Author manuscript; available in PMC: 2013 Aug 31.
Published in final edited form as: Cell. 2012 Aug 31;150(5):895–908. doi: 10.1016/j.cell.2012.08.002

Figure 1. AGO-modulated gene silencing and chemically modified ss-siRNAs.

Figure 1

(A) Recognition of mRNA by ss-siRNA. ss-siRNA loads into AGO protein and the complex recognizes a target sequence within an mRNA to silence gene expression.

(B) Sequence and chemical modifications of a typical ss-siRNA. The 5'-thymidine base is modified with an (E)-vinylphosphonate.