F-actin is a helix with a random variable twist.

E H Egelman; N Francis; D J DeRosier

doi:10.1038/298131a0

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F-actin is a helix with a random variable twist.

E H Egelman·N Francis·D J DeRosier

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Abstract

Image analysis of isolated F-actin filaments shows that the actin helix can be described by a constant rise per subunit but a considerably variable and randomized twist (number of units per turn). The ability of actin subunits to rotate through angles of the order of 10 degrees from their helically ideal positions helps to explain actin's capacity to form many different polymorphic structures.

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Actins Animals Cytoskeleton Fourier Analysis Macromolecular Substances Models, Molecular Muscles Protein Conformation Journal Article Research Support, U.S. Gov't, P.H.S.

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E H Egelman, N Francis, D J DeRosier. 1982-07-08. F-actin is a helix with a random variable twist.. https://doi.org/10.1038/298131a0

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