While single-molecule fluorescence from emitters with high quantum efficiencies such as
organic dye molecules can easily be detected by modern apparatus, many less efficient …

Single-molecule spectroscopy was employed to elucidate the fluorescence spectral
heterogeneity and dynamics of individual, immobilized trimeric complexes of the main light …

The ability to dissipate large fractions of their absorbed light energy as heat is a vital
photoprotective function of the peripheral light-harvesting pigment–protein complexes in …

Optical single-molecule techniques can be used in two modes to investigate fundamental
questions in biochemistry, namely single-molecule detection and single-molecule …

Hypericin is one of the most efficient photosensitizers used in photodynamic tumor therapy
(PDT). The reported treatments of this drug reach from antidepressive, antineoplastic …

Phytochromes are red light-sensing photoreceptor proteins that bind a bilin chromophore.
Here, we investigate the role of a conserved histidine (H260) and tyrosine (Y263) in the …

Bacteriophytochromes are photoreceptors that regulate various physiological processes
induced by photoisomerization in a linear tetrapyrrole chromophore upon red/far-red light …

Phytochromes are red/far-red photoreceptors that are widely distributed in plants and
prokaryotes. Ultrafast photoisomerization of a double bond in a biliverdin cofactor or other …

Phytochromes are an important class of red/far-red responsive photoreceptors that act as
light-activated biological switches, ultimately driving growth and development in plants …

Unlike canonical phytochromes, the GAF domain of cyanobacteriochromes (CBCRs) can
bind bilins autonomously and is sufficient for functional photocycles. Despite the astonishing …