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Warren L. Butler
Researcher at University of California, San Diego
Publications - 127
Citations - 9708
Warren L. Butler is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Photosystem II & Photosystem I. The author has an hindex of 52, co-authored 127 publications receiving 9491 citations. Previous affiliations of Warren L. Butler include National Institutes of Health & United States Department of Agriculture.
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Journal ArticleDOI
Spectral Characterization of the Photoreducible b-Type Cytochrome of Dictyostelium discoideum
Kenneth L. Poff,Warren L. Butler +1 more
TL;DR: Low temperature spectroscopy shows that reduced form of the photoreducible Cytochrome b has a Soret band at 423 nm and a split alpha band with maxima at 558 and 551 nm similar to the b-type cytochrome in complex II of beef heart mitochondria.
Journal ArticleDOI
The photoreduction of C-550 in chloroplasts and its inhibition by lipase
Warren L. Butler,S. Okayama +1 more
TL;DR: Comparison of difference spectra and after irradiation at −196° show that the photochemical electron transfer results in a shift of the absorption band of C-550 from 546 to 544 nm.
Journal ArticleDOI
Stabilization of phytochrome intermediates by low temperature.
L. H. Pratt,Warren L. Butler +1 more
TL;DR: No evidence was obtained to suggest that any of the observed intermediate states are involved in more than one direction of phytochrome photocon version.
Journal ArticleDOI
The temperature dependence of phytochrome transformations
L. H. Pratt,Warren L. Butler +1 more
TL;DR: The results suggest that the phototransformations between Pr and Pfr consist of relaxation processes beginning with the intermediate produced immediately upon absorption of a quantum of light and ending with either Pr or Pfr.
Journal ArticleDOI
The b-type cytochromes of beef heart mitochondria
TL;DR: Three b -type cytochromes have been recognized in beef heart mitochondria and ETPH and they fractionate into complexes II and III, which are functionally and spectrally comparable to b T and b K.