Cyanide-insensitive Respiration in Acanthamoeba castellanii. Changes in Sensitivity of Whole Cell Respiration during Exponential Growth
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چکیده
منابع مشابه
Cyanide - insensitive Respiration in Plant Mitochondrial
Pathways of electron transport have been studied in mitochondria isolated from hypocotyls of etiolated mung bean seedlings and skunk cabbage spadices that show cyanide-resistant respiratory activity. The residual flux through cytochrome c oxidase is shown to be small in comparison with the flux through an unidentified alternative oxidase that is known to have a high affinity for oxygen. This al...
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Mitochondria isolated by a zonal procedure from the cotyledons of germinating peas possessed a cyanide-resistant respiration. This respiration was virtually absent in mitochondria isolated during the first 24 hours of germination but thereafter increased gradually until the 6th or 7th day of seedling development. At this time between 15 and 20% of the succinate oxidation was not inhibited by cy...
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Treatment of cultures of Neurospora crassa with chloramphenicol results in the appearance of a mitochondrial respiratory pathway that is insensitive to cyanide and antimycin A but is inhibited by salicylhpdroxamic acid. Under the experimental conditions employed, protein(s) required for the expression of the alternate pathway is synthesized on cytoplasmic ribosomes at a constant rate for 2.5 ho...
متن کاملEffect of growth at low temperature on the alternative pathway respiration in Acanthamoeba castellanii mitochondria.
Mitochondria of amoeba Acanthamoeba castellanii in addition to the conventional cytochrome pathway possess, like plant mitochondria, a cyanide-resistant alternative quinol oxidase. In mitochondria isolated from amoeba batch culture grown temporarily at low temperature (6 degrees C), higher respiration was accompanied by lower coupling parameters as compared to control culture (grown at 28 degre...
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After preparation on self-generated Percoll gradients, avocado (Persea americana Mill, var. Fuerte and Hass) mitochondria retain a high proportion of cyanide-insensitive respiration, especially with alpha-ketoglutarate and malate as substrates. Whereas alpha-ketoglutarate oxidation remains unchanged, the rate of malate oxidation increases as ripening advances through the climacteric. An enhance...
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ژورنال
عنوان ژورنال: Journal of General Microbiology
سال: 1977
ISSN: 0022-1287
DOI: 10.1099/00221287-103-2-207