Heavy meromyosin complexing filaments in the phloem of Vicia faba and Xylosma congestum.
Stem sections of Vicia faba L. were incubated with rabbit-muscle heavy meromyosin (HMM) and HMM complexes with phloem filaments (P-protein) were observed with the electron microscope. Treatment of sections of Vicia faba and of Xylosma congestum (Lour.) Merr. with fluorescent HMM resulted in a weak fluorescence of the phloem region. Inasmuch as HMM-binding is believed to be specific for actin-like proteins, it is proposed to classify P-protein as such.
Department of Botany, University of California, 95616, Davis, California, USA.
R
R
Ilker
H B
HB
Currier