Barden J A, Tulloch P A, dos Remedios C G
J Biochem. 1981 Jul;90(1):287-90.
Crystalline actin tubes can be formed in the presence of Pr(III) and examples can be selected which are opened along their length. The structural unit cell seen in electron micrographs were computer-averaged to obtain the projected size and shape of the actin monomer. There are two monomers per unit cell, each related by a two-fold axis perpendicular to the plane of the projection. Each 3.3 x 5.5 nm monomer was markedly asymmetric. Skeletal muscle actin strongly resembles Acanthamoeba actin (Aebi et al. (1980) Nature 288, 296) although the projected dimensions may vary slightly.
在镨（III）存在的情况下可形成结晶肌动蛋白管，并且可以选择沿其长度方向开口的实例。对电子显微镜照片中看到的结构单位晶胞进行计算机平均，以获得肌动蛋白单体的投影尺寸和形状。每个单位晶胞中有两个单体，每个单体通过垂直于投影平面的二次轴相关联。每个3.3×5.5纳米的单体明显不对称。骨骼肌肌动蛋白与棘阿米巴肌动蛋白非常相似（埃比等人，（1980年）《自然》288卷，第296页），尽管投影尺寸可能略有不同。
