Cytochromes and the succinic acid oxidase system of poky strains of Neurospora.
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چکیده
منابع مشابه
Cytochromes and the Succinic -4cid Oxidase System of Poky Strains of Neurospora*
Recent investigations in this laboratory (1) have demonstrated that in Neurospora crassa growth characteristics representing at least two stable states are possible with the same constitution of nuclear genes. If a slow growing strain, designated polcy, functions in a cross to wild type as the “maternal” or protoperithecial parent, then all progeny from the cross exhibit the poky character. If ...
متن کاملStudies on the respiratory system of the poky strain of Neurospora.
It was shown recently that the poky strain of Neurospora accumulates large amounts of cytochrome c, but is deficient in cytochromes a and b and thus in cytochrome oxidase and succinic acid oxidase activities (1). These findings, which suggest that respiration in poky does not utilize the cytochrome system, led to a study of the respiratory system of poky compared with that of wild type. The exp...
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 کاملCyanide-resistant respiration in Neurospora crassa.
Cell respiration in wild type and poky was studied as part of a long-term investigation of cyanide-resistant respiration in Neurospora. Respiration in wild type proceeds via a cytochrome chain which is similar to that of higher organisms; it is sensitive to antimycin A or cyanide. Poky, on the other hand, respires by means of two alternative oxidase systems. One of these is analogous to the wil...
متن کاملThe electron transport components of wild type and poky strains of Neurospora crassa.
A detailed spectrophotometric study was made of the electron transport systems in .mitochondria from wild type and poky strains of Neurospora crassa. Wild type mitochondria were found to contain flavoproteins, two b-type cytochromes (G-peaks (77%) at 554 and 561 nm), two c-type cytochromes (a-peaks (77°K) at 545 and 550 nm), and cytochrome (1~73 (a-peak (77°K) at 601 nm). In terms of their spec...
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ورودعنوان ژورنال:
- The Journal of biological chemistry
دوره 200 2 شماره
صفحات -
تاریخ انتشار 1953