Toyama Y
Cell Tissue Res. 1977 Feb 9;177(2):221-6. doi: 10.1007/BF00221083.
Microfilaments in the myoid cells of the peritubular tissue in the mouse, swine and human testis bind heavy meromyosin (HMM) and form arrowhead complexes. The periodicity of the arrowhead complexes is about 35 nm. Individual filaments show arrowheads that point in the same direction. Opposing polarity of the HMM-bound filaments is also observed. The microfilaments do not bind HMM in the presence of 10 mM ATP. After treatment with the contraction medium of Hoffmann-Berling, the filaments appear to be undulated. These observations indicate that the microfilaments in the myoid cell are actin-like in nature. A small number of thicker filaments (about 10 nm in diameter) which do not bind HMM is also observed in the cell. Microfibrils which have been reported around the human myoid cell are also found in the swine.
小鼠、猪和人类睾丸的肾小管周围组织的肌样细胞中的微丝与重酶解肌球蛋白（HMM）结合并形成箭头复合物。箭头复合物的周期约为35纳米。单个细丝显示出指向相同方向的箭头。还观察到与HMM结合的细丝具有相反的极性。在10 mM ATP存在的情况下，微丝不与HMM结合。用霍夫曼 - 伯林收缩介质处理后，细丝似乎呈波浪状。这些观察结果表明，肌样细胞中的微丝本质上类似肌动蛋白。在细胞中还观察到少量不与HMM结合的较粗细丝（直径约10纳米）。在猪中也发现了已报道的围绕人类肌样细胞的微原纤维。
