TY - JOUR
T1 - Inhibition of respiration in yeast by light
AU - Ninnemann, Helga
AU - Butler, W. L.
AU - Epel, B. L.
N1 - Funding Information:
This work was supported by a Dernham Fellowship of the American Cancer Society (H.N.), a National Science Foundation Grant GB-6557 x, and a U.S. Public Health Service Fellowship, National Institutes of Health Grant GM-33,o55 (B.L.E.).
PY - 1970/6/30
Y1 - 1970/6/30
N2 - Irradiation of starved cultures of Saccharomyces cerevisiae with blue light under aerobic conditions inhibited the capacity of the yeast cells to respire added substrates (e.g., ethanol) and stimulated endogenous respiration. Spectroscopic examination of the cells showed that the irradiation destroyed both cytochrome a and a3 components of cytochrome oxidase and a part of the cytochrome b. Irradiation under anaerobic conditions had no effect on the respiratory capacity or the cytochrome content of the cells. Under aerobic conditions cytochrome a3 was protected against photodestruction when complexed with cyanide and cytochrome a was protected when complexed with azide.
AB - Irradiation of starved cultures of Saccharomyces cerevisiae with blue light under aerobic conditions inhibited the capacity of the yeast cells to respire added substrates (e.g., ethanol) and stimulated endogenous respiration. Spectroscopic examination of the cells showed that the irradiation destroyed both cytochrome a and a3 components of cytochrome oxidase and a part of the cytochrome b. Irradiation under anaerobic conditions had no effect on the respiratory capacity or the cytochrome content of the cells. Under aerobic conditions cytochrome a3 was protected against photodestruction when complexed with cyanide and cytochrome a was protected when complexed with azide.
UR - http://www.scopus.com/inward/record.url?scp=0014968171&partnerID=8YFLogxK
U2 - 10.1016/0005-2728(70)90115-5
DO - 10.1016/0005-2728(70)90115-5
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AN - SCOPUS:0014968171
SN - 0005-2728
VL - 205
SP - 499
EP - 506
JO - Biochimica et Biophysica Acta - Bioenergetics
JF - Biochimica et Biophysica Acta - Bioenergetics
IS - 3
ER -