通过核磁共振氢谱确定[Nle7]-内皮素的结构

Determination of the structure of [Nle7]-endothelin by 1H NMR.

作者信息

Aumelas A, Chiche L, Mahe E, Le-Nguyen D, Sizun P, Berthault P, Perly B

机构信息

CNRS-INSERM Center of Pharmacology-Endocrinology, Montpellier, France.

出版信息

Int J Pept Protein Res. 1991 Apr;37(4):315-24. doi: 10.1111/j.1399-3011.1991.tb00745.x.

DOI:10.1111/j.1399-3011.1991.tb00745.x

PMID:1894446

Abstract

[Nle7]-endothelin was synthesized and studied by 1H NMR and distance geometry calculations. The NMR study was performed first in DMSO-d6 and then in 50% acetonitrile/water since this peptide aggregates in pure water. In both cases, all spin systems were identified and assigned with the aid of two-dimensional spectroscopy (2D): COSY (for scalar couplings) and NOESY (for dipolar couplings). On the basis of the acetonitrile/water NMR parameters, and using the DISGEO program, a three-dimensional structure of [Nle7]-endothelin is proposed and discussed.

摘要

合成了[Nle7]-内皮素，并通过1H核磁共振和距离几何计算对其进行了研究。核磁共振研究首先在氘代二甲亚砜（DMSO-d6）中进行，然后在50%乙腈/水体系中进行，因为该肽在纯水中会聚集。在这两种情况下，所有自旋系统均借助二维光谱（2D）得以识别和归属：COSY（用于标量耦合）和NOESY（用于偶极耦合）。基于乙腈/水核磁共振参数，并使用DISGEO程序，提出并讨论了[Nle7]-内皮素的三维结构。