Light harvesting in purple bacteria does not rely on resonance fine-tuning in peripheral antenna complexes.

ABSTRACT: The ring-like peripheral light-harvesting complex 2 (LH2) expressed by many phototrophic purple bacteria is a popular model system in biological light-harvesting research due to its robustness, small size, and known crystal structure. Furthermore, the availability of structural variants with distinct electronic structures and optical properties has made this group of light harvesters an attractive testing ground for studies of structure-function relationships in biological systems. LH2 is one of several pigment-protein complexes for which a link between functionality and effects such as excitonic coherence and vibronic coupling has been proposed. While a direct connection has not yet been demonstrated, many such interactions are highly sensitive to resonance conditions, and a dependence of

SUBMITTER: Keil E 

PROVIDER: S-EPMC11324704 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature