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FIGURE 23.15 • The reactions of glycogen debranching enzyme. Transfer of a group of three «-(1 n 4)-linked glucose residues from a limit branch to another branch is followed by cleavage of the «-(1 n 6) bond of the residue that remains at the branch point.

Limit branch

Limit branch

ÔÎÔ^

Limit dextrin

Glycogen debranching enzyme

W a- (1-»" 6)-glucosidase activity of debranching enzyme cleaves this residue

Further cleavage by a-amylase

CH2OH

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