Author:
Gessmann Renate,Brückner Hans,Petratos Kyriacos
Abstract
The title achiral peptideN-benzyloxycarbonyl-α-aminoisobutyryl-α-aminoisobutyryl-α-aminoisobutyrylglycinetert-butyl ester orZ-Aib-Aib-Aib-Gly-OtBu (Aib is α-aminoisobutyric acid,Zis benzyloxycarbonyl, Gly is glycine and OtBu indicates thetert-butyl ester), C26H40N4O7, is partly hydrated (0.075H2O) and has two different conformations which together constitute the asymmetric unit. Both molecules form incipient 310-helices. They differ in the relative orientation of the N-terminal protection group and at the C-terminus. There are two 4→1 intramolecular hydrogen bonds.
Publisher
International Union of Crystallography (IUCr)
Subject
Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry,Condensed Matter Physics
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