X‐Ray diffraction of oriented amylose fibers. II. Structure of V amyloses

This is the authors' abstract. We don't add key points for this paper.

Oriented amylose fibers in the V form were prepared and subjected to x‐ray analysis. Unit cells and the probable space group of P212121 were determined for the V anhydrous and V hydrate forms of amylose; the analysis confirms previous predictions of these structures based on x‐ray powder patterns. Chain folding in V amyloses is discussed in view of crystallographic evidence and folding experiments conducted with space‐filling models. Reported also is evidence for amylose helices having diameters intermediate between 13.0 and 13.7 A.