GNRA tetraloop receptor motif, molecular model
GNRA tetraloop receptor motif, molecular model. The image shows a synthetic GNRA tetraloop receptor motif composed of RNA and DNA. Tetraloops are a type of four-base hairpin loop motifs in RNA secondary structure. The GNRA tetraloop has a guanine-adenine base-pair. N is either uracil, adenine, cytosine or guanine, R is either guanine or adenine., by LAGUNA DESIGN/SCIENCE PHOTO LIBRARY
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