Lack of correlation between structural properties and biological activity of two cross-reacting cytochrome c T cell epitopes as determined by circular dichroism measurements.
Horse and tuna cytochrome c synthetic peptides 39-53 can equally well stimulate a cytochrome c specific T cell hybridoma. The amino acid sequence of the two peptides differs mainly for the presence of a helix-breaking proline and a helix-forming glutamic acid in position 44. Circular dichroism studies of these two peptides revealed that their conformation could be drastically depending on the solvent used. These data place some limits on the correlation between structural data and biological activity.
Department of Organic Chemistry, University of Padua, Italy.
C
C
Vita
S
S
Baumhüter
G
G
Corradin
D000818:Animals; D002942:Circular Dichroism; D003429:Cross Reactions / Q000276:immunology; D003574:Cytochrome c Group / Q000276:immunology*; D000939:Epitopes / Q000276:immunology*; D006736:Horses; D013329:Structure-Activity Relationship; D013601:T-Lymphocytes / Q000276:immunology*; D014413:Tuna
D003574:Cytochrome c Group; D000939:Epitopes