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Updated: Sep 26, 2026
Combining X-Ray Crystallography with Small Angle X-Ray Scattering to Model Unstructured Regions of Nsa1 from S. Cerevisiae
Published on: January 10, 2018
A new conformer of 20-hydroxyecdysone from Sesuvium portulacastrum: an x-ray crystallographic study
Shyam Rele1, Asoke Banerji, Gajanan Chintalwar
1Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India. smrele@emory.edu
Abstract:
X-ray single crystal analysis of 20-hydroxyecdysone (20E, 2), an important insect moulting hormone, isolated from Sesuvium portulacastrum Linn. was found to exhibit a unique stereochemical configuration revealing it to be a different conformer (polymorph) possessing the aliphatic chain atoms in a trans configuration. Moreover, the analysis also revealed the presence of three molecules of water of crystallisation thereby restricting the freedom of the aliphatic side chain.
