Publication Date

7-1981

Abstract

C7H12N 2O5, orthorhombic, P212121, a = 5·525(5), b = 12·565(4), c = 13·211(6) Å, Z = 4, Dc = l·48, Dm (flotation in chloroform/ methylene chloride) = 1·48(1) Mg m-3, R1 = 0·039, R2 = 0·040 for 1172 observations. The dipeptide crystallizes as a zwitterion with the main-chain carboxyl ionized and the amino terminus protonated. The conformation of the peptide group is trans; the glutamyl side chain is extended, but the carboxy terminus is held by hydrogen bonding in a non-extended conformation with a torsional angle ΦGly = -74.1°.

Subjects

Conformation; Molecular structure

Publication Information

Copyright 1981 International Union of Crystallography. The original published version of this article may be found at http://dx.doi.org/10.1107/S056774088100616X.

DOI

10.1107/S056774088100616X

Document Type

Journal Article

Included in

Chemistry Commons

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