The natural product capsaicin inhibits photosynthetic electron transport at the reducing side of photosystem II and purple bacterial reaction center:structural details of capsaicin binding
A. Spyridaki et al., The natural product capsaicin inhibits photosynthetic electron transport at the reducing side of photosystem II and purple bacterial reaction center:structural details of capsaicin binding, BBA-BIOENER, 1459(1), 2000, pp. 69-76
Capsaicin, a natural quinone analog, was found to block electron transport,
in both plant photosystem II (PSII) and bacterial reaction center (RC) fro
m Rhodobacter sphaeroides, at the Q(B) site. The mode of action of capsaici
n was investigated by O-2 evolution measurements and fluoresence induction
studies in the case of PSII, and flash-induced absorbance spectroscopy in t
he case of the bacterial RC. Structural details of capsaicin binding to the
bacterial RC complex were determined by X-ray crystallographic analysis. (
C) 2000 Elsevier Science B.V. All rights reserved.