Fig. 5From: The human transketolase-like proteins TKTL1 and TKTL2 are bona fide transketolasesBinding of X5P to TKT. Binding of D-xylulose-5-phosphate (X5P) in the active site of TKT. Residues and water molecules involved in hydrogen bonding to the xylulose adduct are shown for (a) TKT and (b) TKTL1Back to article page