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Gelation of pustulan [(1----6)-beta-D-glucan] likely involves some chain ordering. To characterize the most probable conformation, we previously carried out energy calculations and identified the local energy minimums. Here, we analyze the (previously measured) vacuum-ultraviolet circular dichroism of pustulan by using a quadrant rule recently proposed for the 175-nm c.d. band and our earlier quantum-mechanical model for the 185-nm c.d. band. Most of the local-energy minimum conformations are shown to be inconsistent with the circular dichroism observed. Of the two distinct conformations consistent with the observed circular dichroism, one includes the global-energy minimum calculated earlier, i.e., (phi, psi, omega) = (20 degrees, -90 degrees, gt).
E S Stevens, and
B K Sathyanarayana
March 2016,
Proteins,
E S Stevens, and
B K Sathyanarayana
June 1976,
Journal of the American Chemical Society,
E S Stevens, and
B K Sathyanarayana
January 1978,
Methods in enzymology,
E S Stevens, and
B K Sathyanarayana
February 1979,
Biochemical and biophysical research communications,
E S Stevens, and
B K Sathyanarayana
August 1981,
Proceedings of the National Academy of Sciences of the United States of America,
E S Stevens, and
B K Sathyanarayana
July 1982,
The Journal of biological chemistry,
E S Stevens, and
B K Sathyanarayana
May 2006,
Chirality,
E S Stevens, and
B K Sathyanarayana
April 1987,
Biochimica et biophysica acta,
E S Stevens, and
B K Sathyanarayana
January 2020,
The journal of physical chemistry. A,
E S Stevens, and
B K Sathyanarayana
August 1977,
Proceedings of the National Academy of Sciences of the United States of America,
