Electron Transport in Neurospora Mitochondria
نویسندگان
چکیده
منابع مشابه
Cryo-electron tomography of neurospora mitochondria.
Cryo-electron tomography was used to study the structural organization of whole frozen-hydrated mitochondria from Neurospora crassa. Unlike mitochondria from many other species and tissues, in this case the cristae form a three-dimensional network of interconnected lamellae. Basically, the three-dimensional structure of ice-embedded mitochondria from this species is consistent with previous des...
متن کاملElectron transport in Neurospora mitochondria. Studies on wild type and poky.
A comparative study has been made of mitochondria isolated from wild type Neurospora and from poky, a cytochrome-deficient mutant. Both types of mitochondria respire with a variety of Krebs cycle acids and with NADH, but State 3 respiration rates are typically 20 to 40% lower in poky than in wild type. The dehydrogenases and flavoproteins of the two strains appear qualitatively similar, as judg...
متن کاملPotassium Transport in Neurospora
At low extracellular pH (4-6), net uptake of potassium by Neurospora is a simple exponential process which obeys Michaelis kinetics as a function of [K](o). At high pH, however, potassium uptake becomes considerably more complex, and can be resolved into two distinct exponential components. The fast component (time constant = 1.2 min) is matched quantitatively by a rapid loss of sodium; it is a...
متن کاملSugar Transport in Neurospora
A number of independent systems for sugar transport in Neurospora have been postulated. An approach to identification of specific components of the sorbose transport system in ungerminated conidia pretreated with sorbose is described here. The fact that sorbose stimulates sorbose-uptake without causing germination was exploited in differential labeling experiments. Sorbose treated and untreated...
متن کاملMetmyoglobin Oxidation during Electron Transport Reactions in Mitochondria
Studies of the intracellular role of myoglobin were carried out by recording spectrophotometric changes in acid metmyoglobin and oxymyoglobin during electron transport reactions with mitochondria prepared from pigeon heart muscle by the method of Chance and Hagihara. The absorption peak of metmyoglobin at 409 mmicro disappeared when substrate was added to normal or antimycin-inhibited preparati...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1972
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)44989-2