Conformational Transition of Acidic Peptides Exposed to Minerals in Suspension - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Chemistry - A European Journal Année : 2000

Conformational Transition of Acidic Peptides Exposed to Minerals in Suspension

Résumé

Mineral surfaces probably participated in the chemical processes which led to life in the primitive oceans. The ordered conformations of simple acidic peptides exposed to insoluble minerals are described. Alternating poly(Glu-Leu) adopts a random coil conformation in water due to charge repulsion. The polypeptide extracts cations from insoluble crystalline CdS or molybdenum and adopts an ordered conformation. CdS leads to the formation of beta-sheets whereas molybdenum leads to alpha-helices. Peptides with at least 10-amino acids are necessary to exhibit a significative adsorption onto the surface. Under the same conditions, montmorillonite adsorbs the polypeptide but does not induce any conformational change.

Domaines

Chimie

Dates et versions

hal-02106710 , version 1 (23-04-2019)

Identifiants

Citer

Marylène Bertrand, André Brack. Conformational Transition of Acidic Peptides Exposed to Minerals in Suspension. Chemistry - A European Journal, 2000, 6 (18), pp.3452-3455. ⟨10.1002/1521-3765(20000915)6:18<3452::AID-CHEM3452>3.0.CO;2-T⟩. ⟨hal-02106710⟩
18 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More