2.6.1.16 additional information - 639908 2.6.1.16 additional information glmS ribozyme employs a small-molecule cofactor. Binding of D-glucosamine 6-phosphate (GlcN6P) uncovers the latent self-cleavage activity of the RNA, which adopts a catalytically competent conformation that is nonetheless inactive in the absence of GlcN6P 722453 2.6.1.16 additional information no cofactor requirement 639904