The tripeptide N-Cbz-βGly-Gly-Gly-Obz

Acta Crystallographica Section E: Crystallographic Communications

Nicholas, S.¹ 

[1] Department of Physics, Indian Institute of Science, Bangalore 560012, India

关键词: CRYSTAL STRUCTURE;    GLYCINE;    PEPTIDE;    [BETA]-PEPTIDE;    [BETA]-GLYCINE,HYDROGEN BONDING;   

DOI  :  10.1107/S2056989015004272

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The title peptide, N-benzyl­oxycarbonyl-β-glycylglycylglycine benzyl ester, C22H25N3O6, contains a non-proteinogenic amino acid residue, β-glycine, which is a homologated analogue of glycine. In the mol­ecular structure, β-glycine adopts an extended conformation with a trans conformation about its Cβ—Cα bond. The second glycine residue adopts an extended conformation while the third glycine residue adopts a helical conformation. In the crystal, three N—H⋯O hydrogen bonds, two involving the same carbonyl O atom as acceptor, results in an infinite two-dimensional network parallel to the bc plane.

【 授权许可】

CC BY