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ID 32488
フルテキストURL
著者
Seki, Shuji Okayama University
Yamamoto, Goki Okayama University
Hayashi, Hideo Okayama University
Inohara, Risaburo Okayama University
Oda, Takuzo Okayama University
抄録

1. An oligomycin -sensitive ATPase was isolated and partially purified from beef heart mitochondria. The specific activity of ATPase sensitive to oligomycin of the fraction was five to eight times that of aged mitochondrial or of DNP-induced mitochondrial ATPase assayed under the same condition. 2. Electron micrographs of the partially purified oligomycin- sensitive ATPase reveal a structure in which headpieces are regularly attached by way of stalks to a thread-like structure derived from a superficial portion of base pieces. 3. A high concentration of the structured material coincided with a high activity of oligomycin-sensitive ATPase. When the headpieces were detached from the structure, the ATPase became insensitive to oligomycin. 4. The fraction of oligomycin -sensitive ATPase was essentially free of membrane structure and was contaminated with a small amount of cytochromes b and Cl but no cyt. a. Cytochrome concentrations of the preparations were indifferent to the activity of oligomycin sensitive ATPase. It follows that ATPase does not require cytochromes or membrane structure for its oligomycin sensitivity. 5. From these results it seems that the factor rendering ATPase sensitive to oligomycin should be contained in the stalks and/or the thread-like portion of basepieces of the structure. The structure is the simplest unit of oligomycinsensitive ATPase as yet obtained. 6. The structure was called "oligomycin-sensitive ATPase particles" (abbreviated as OSA particles). A unit of OSA particles consists of a headpiece attached by a stalk to a portion of base piece.

発行日
1967-08
出版物タイトル
Acta Medicinae Okayama
21巻
4号
出版者
Okayama University Medical School
NCID
AA00041342
資料タイプ
学術雑誌論文
言語
English
論文のバージョン
publisher
査読
有り
PubMed ID
Amo Type
Article
Submission Path
amo/vol21/iss4/1