alpha Isoactin
《英文msh詞典》alpha Isoactin
[入口詞] alpha Isoactin
[主題詞] Actins
[英文釋義] Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS,actin is responsible for the contraction and relaxation of muscle.