title: Heavy-meromyosin-decoration of microfilaments from Mougeotia protoplasts.
abstract: The cell wall of the green alga Mougeotia was enzymatically digested by macerase and cellulysin. Released protoplasts were spread on poly-L-ornithine, formvar-carbon-coated grids, and cell fragments were collected for structural characterization. Large numbers of 5-7 nm filaments are seen which may be decorated with heavy meromyosin (HMM), a digest product of muscle myosin that binds specifically to actin, supporting the hypothesis that the phytochrome-mediated chloroplast movements in these algae are driven by a contractile complex of actomyosin.
authors.affiliation: Institut für Botanik und Pharmazeutische Biologie der Universität, Schloßgarten 4, D-8520, Erlangen, Federal Republic of Germany.
authors.forename: K
authors.initials: K
authors.lastname: Klein
authors.forename: G
authors.initials: G
authors.lastname: Wagner
authors.forename: M R
authors.initials: MR
authors.lastname: Blatt