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SAM-IV riboswitches are a kind of riboswitch that specifically binds S-adenosylmethionine (SAM), a cofactor used in many methylation reactions. Originally identified by bioinformatics, SAM-IV riboswitches are largely confined to the Actinomycetales, an order of Bacteria. Conserved features of SAM-IV riboswitch and experiments imply that they probably share a similar SAM-binding site to another class of SAM-binding riboswitches called SAM-I riboswitches. However, the scaffolds of these two types of riboswitch appear to be quite distinct. ==See also== * SAM-I riboswitch * SAM-II riboswitch * SAM-III riboswitch * SAM-V riboswitch 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SAM-IV riboswitch」の詳細全文を読む スポンサード リンク
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