LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
SelB elongation factor bound to RNA. Molecular model of the SelB elongation factor (green) bound to an mRNA (messenger ribonucleic acid, red) hairpin formed by the selenocysteine insertion sequence (SECIS). SelB elongation factor is needed to incorporate the amino acid selenocysteine into proteins.
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