2.4.2.29 0.0005 - pre-queuine 0 mutant enzyme E235Q, Km less than 0.0005 mM, in 200 mM HEPES, pH 7.3, 20 mM MgCl2 688390 2.4.2.29 0.0011 - guanine mutant enzyme S90A 644934 2.4.2.29 0.0097 - tRNA(Tyr) mutant enzyme S90C 644934 2.4.2.29 0.00098 - [tRNATyr]7-aminomethyl-7-carbaguanine mutant K52M 705164 2.4.2.29 0.00036 - [tRNA]-guanine mutant Y106F 703226 2.4.2.29 0.0013 - guanine mutant Y106F 703226 2.4.2.29 0.00158 - [tRNATyr]7-aminomethyl-7-carbaguanine mutant Y330F 705164 2.4.2.29 0.0007 - pre-queuine 1 wild type enzyme, in 200 mM HEPES, pH 7.3, 20 mM MgCl2 688390 2.4.2.29 0.0009 - pre-queuine 0 wild type enzyme, in 200 mM HEPES, pH 7.3, 20 mM MgCl2 688390 2.4.2.29 0.0009 - tRNA guanine wild type enzyme, in 200 mM HEPES, pH 7.3, 20 mM MgCl2 688390