Figure 1.
The two most abundant folds found in the GTF protein family: GTF A and GTF B folds. (A) The typical GTF A structure of the spore coat polysaccharide biosynthesis protein Spsa from Bacillus subtilis (PDB code 1qg8A; Charnock and Davies 1999). (B) The typical GTF B type fold adopted by the Escherichia coli protein MurG, a membrane-associated glycosyltransferase involved in peptidoglycan biosynthesis (PDB code 1f0kA; Ha et al. 2000).