LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Argonaute protein and RNA. Molecular model of the argonaute protein (green) with a guide segment of ribonucleic acid (RNA, orange). This protein forms the RNA-induced silencing complex (RISC) along with a small interfering RNA (ribonucleic acid) molecule. RISC plays a role in gene regulation and defence against viral infection. This example is from the yeast Vanderwaltozyma polyspora.
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