## Abstract The conformations of melanostatin have been studied experimentally using CD spectroscopy and via calculations. In aqueous solution and 2,2,2βtrifluoroethanol (TFE) there is no evidence that monomers of the tripeptide exist in an ordered (Ξ²βbend) structure. In water and TFE solutions (3β
Helical conformations in acidic polysaccharides in solution
β Scribed by Audrey L. Stone
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1972
- Tongue
- English
- Weight
- 518 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0006-3525
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Two amylose samples, amylose V (DP, = 2300) and amylose HE 15 (a low-substituted hydroxyethylamylose, DP, = 1600) were studied. The intrinsic viscosity of the polymers in aqueous solution was measured with regard to its dependence on the alkalinity (0 to SMNaOH), the ionic strength (0 to 5 M , and t
Evidence for a helical contribution to the conformation of methylcellulose in dilute solution is given by CD measurements. Congo red binds to methylcellulose in dilute aqueous solution and becomes optically active. The shape of the induced CD spectra is as predicted by exciton coupling for a helical