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Journal of Cell Science, Vol 103, Issue 2 407-414, Copyright © 1992 by Company of Biologists

JOURNAL ARTICLES

Purification and immunological detection of pea nuclear intermediate filaments: evidence for plant nuclear lamins

AK McNulty and MJ Saunders
Biology Department, University of South Florida, Tampa 33620.

A major structural component of the inner face of the nuclear envelope in vertebrates and invertebrates is the nuclear lamina, an array of 1-3 extrinsic membrane proteins, lamins A, B and C. These proteins are highly homologous to intermediate filaments and are classified as type V. We report the first purification, antigenic characterization and immunocytochemical localization of putative plant lamin proteins from pea nuclei. We conclude that plant cells contain this ancestral class of intermediate filaments in their nuclei and that regulation of nuclear envelope assembly/disassembly and mitosis in plants may be similar to that in animal cells.


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© The Company of Biologists Ltd 1992