Conformational Stability and Activity of Circular Enterocin AS-48 Derivatives
Authors: Sanchez-Hidalgo, Marina; M Fernandez-Escamilla, Ana; Martinez-Bueno, Manuel; Valdivia, Eva; Serrano, Luis; Maqueda, Mercedes
Source: Protein and Peptide Letters, Volume 17, Number 6, June 2010 , pp. 708-714(7)
Publisher: Bentham Science Publishers
Abstract:Four AS-48 mutants (Trp24Ala, Gly13Lys, Leu40Lys and Ala53Ser) were obtained by site-directed mutagenesis. The minimal inhibitory concentration of each peptide showed that only residue Trp24 was unquestionably involved in the biological activity. Guanidine hydrochloride-induced unfolding assays showed a three-state transition denaturation process, suggesting a molten-globule-like conformation after the first transition.
Document Type: Research Article
Publication date: 2010-06-01
- Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.