Lysine and arginine residues do not increase the helicity of alanine-rich peptide helices.
The helix-disfavoring, versus alanine, propagation values of lysine (0.8) and arginine (1.0) residues placed centrally in an (Ala)(9) unit have been measured by (13)C NMR.
Stewart
James M
JM
Department of Chemistry, University of Washington, Seattle, WA 98195, USA.
Lin
Jasper C
JC
Andersen
Niels H
NH
D000409:Alanine / Q000737:chemistry*; D001120:Arginine / Q000737:chemistry*; D002247:Carbon Isotopes; D008239:Lysine / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D010455:Peptides / Q000737:chemistry*; D017433:Protein Structure, Secondary; D013696:Temperature
D002247:Carbon Isotopes; D010455:Peptides; D001120:Arginine; D008239:Lysine; D000409:Alanine