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Glycoside hydrolase family 19 chitinases are found in plants, bacteria and viruses, playing various roles. Plant chitinases are important for defence and development, whereas bacterial examples are useful for nutrition. The available structural studies show that family 19 enzymes are highly α‐helical bi‐lobed structures with a wide cleft lined by conserved residues important for catalysis and substrate...
Chitinases help plants defend themselves against fungal attack, and play roles in other processes, including development. The catalytic modules of most plant chitinases belong to glycoside hydrolase family 19. We report here x-ray structures of such a module from a Norway spruce enzyme, the first for any family 19 class IV chitinase. The bi-lobed structure has a wide cleft lined by conserved residues;...
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