Caption: Figure 1: The connection between the molecular, energetic, and spectral characteristics of the chlorophyll and
bacteriochlorophyll molecules.
Probing the binding site of 800-nm
bacteriochlorophyll in the memebrane-linked LH2 protein of Rhodobacter capsulatus by local unfolding and chemical modification.
The bacteria have developed photosynthetic pigment (
bacteriochlorophyll) to adapt to neartotal darkness.
(55,56) These compounds are diagenetic derivatives of photosynthetic pigments, isorenieratene and
bacteriochlorophylls e, respectively, from obligately anaerobic green sulfur bacteria.
Chlorophylls and
Bacteriochlorophylls: biochemistry, biophysics, functions and applications.
This hypothesis has been recently boosted by experimental results which reveal long-lived quantum coherent excitonic dynamics in the energy transfer among
bacteriochlorophylls in photosynthetic complexes (Engel et al., 2007; Lee et al., 2007).
