Fig. 3From: The human transketolase-like proteins TKTL1 and TKTL2 are bona fide transketolasesBinding of TDP to enzyme. Binding of the thiamine diphosphate (TDP) group to the enzyme. The residues involved in hydrogen bonding to the di-phosphate group of TDP are shown for (a) TKT and (b) TKTL1. The equivalent of TKT H77 is not present in TKTL1Back to article page