Studies on the organization and localization of actin and myosin in neurons

E. R. Kuczmarski, J. L. Rosenbaum

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


The organization of actin in mouse neuroblastoma and chicken dorsal root ganglion (DRG) nerve cells was investigated by means of a variety of electron microscope techniques. Microspikes of neuroblastoma cells contained bundles of 7- to 8-nm actin filaments which originated in the interior of the neurite. In the presence of high concentrations of Mg++ ion, filaments in these bundles became highly ordered to form paracrystals. Actin filaments, but not bundles, were observed in growth cones of DRG cells. Actin was localized in the cell body, neurites, and microspikes of both DRG and neuroblastoma nerve cells by fluorescein-labeled S1. Myosin was localized primarily in the neurites of chick DRG nerve cells with fluorescein-labeled anti-brain myosin antibody. This antibody also stained stress fibers in fibroblasts and myoblasts but did not stain muscle myofibrils.

Original languageEnglish (US)
Pages (from-to)356-371
Number of pages16
JournalJournal of Cell Biology
Issue number2
StatePublished - 1979

ASJC Scopus subject areas

  • Cell Biology


Dive into the research topics of 'Studies on the organization and localization of actin and myosin in neurons'. Together they form a unique fingerprint.

Cite this