1. Diagrammatic representation of the proposed first three levels of amylopectin (Ap) structure (adapted from Gallant et al., 1997).
Diagrammatic representation of the proposed first three levels of amylopectin (Ap) structure (adapted from Gallant et al., 1997). A, Connection of glucosyl units via α(1→4) and α(1→6) glycoside linkages. The specific chain organization shown is not intended to illustrate the actual structure of amylopectin. B, Cluster model of amylopectin structure. Solid lines indicate glucan chains, and intersections between them indicate branch linkages. Dotted lines indicate the boundaries of amylopectin side chain clusters in which primarily unbranched chains associate in tightly packed double helices. a, Amorphous areas that separate amylopectin side chain clusters. C, Diagrammatic representation of a blocklet, which is made up of amylopectin side chain clusters organized into a discrete unit.
Alan M. Myers et al. Plant Physiol. 2000;122:
©2000 by American Society of Plant Biologists