出典:Wiktionary
出典:『Wiktionary』 (2009/09/04 08:15 UTC 版)
tetraloop (複数形 tetraloops)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/25 09:48 UTC 版)
Tetraloops are a type of four-base hairpin loop motifs in RNA secondary structure that cap many double helices. Three types of tetraloops are common in ribosomal RNA: GNRA, UNCG and CUUG. The GNRA tetraloop has a guanine-adenine base-pair where the guanine is 5' to the helix and the adenine is 3' to the helix.