Molecular Assembly of Bachteriochlorophyll a and Its Analogues by Synthetic 4(alpha)-Helix Polypeptides

Molecular assemblies of bachteriochlorophyll a, BChl a and its analogues can be made due to the presence of synthetic 4(alpha)-helix polypeptides. UV-vis. and CD spectroscopic properties of BChl a derivatives were analogous to those obtained using lightharvesting (LH) polypeptides from photosynthetic bacteria. Thus, appropriate analogues of HAHA are useful in providing an insight into the structural effect of polypeptide on formation the LH / BChl a complex as well as an artificial LH complex model.