Inhibition of Respiration in Prototheca zopfii by Light 1
AUTOR(ES)
Epel, B. L.
RESUMO
Irradiation of cells of Prototheca zopfii with blue light inhibited the respiratory capacity of the cells. The inhibition of respiration was correlated with a photodestruction of cytochrome c(551), cytochrome b(559), and cytochrome a3. Cytochrome c(549), cytochrome b(555), and cytochrome b(564) were unaffected by the irradiation treatment. The α-band of reduced cytochrome a was shifted from 599 to 603 nm by irradiation, an effect similar to that observed when methanol was added to nonirradiated cells. The presence of oxygen was required during irradiation for both photoinhibition of respiration and photodestruction of the cytochromes. Cytochrome a3 was protected against photodestruction by cyanide. Photodestruction of these same cytochromes also occurred when washed mitochondria of P. zopfii were irradiated.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=396502Documentos Relacionados
- The Cytochromes of Prototheca zopfii1
- Degradation of Petroleum by an Alga, Prototheca Zopfii
- Mastite bovina causada por Prototheca zopfii
- Simple new test for rapid differentiation of Prototheca wickerhamii from Prototheca zopfii.
- Fatores de risco associados à mastite bovina causada por Prototheca zopfii
