5JSV 5JSV 5jsv tRNA guanine Transglycosylase (TGT) in co-crystallized complex with 6-amino-2-((((3aR,4R,6R,6aR)-6-methoxy-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl)amino)-1H-imidazo[4,5-g]quinazolin-8(7H)-one 5JSV-noatom