SAM-VI riboswitch
SAM-VI is a member of the riboswitch family. It is predominantly found in Bifidobacterium and exhibits some similarities to the SAM-III (Smk box) riboswitch class, but lacks most of the highly-conserved nucleotides of SAM-III class. SAM-VI aptamers bind the cofactor S-adenosylmethinine SAM (a key metabolite in sulphur metabolism) and discriminate strongly against S-adenosylhomocysteine SAH. The class was discovered by further analysis of Bifido-meK motif RNAs.[1]
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