The nuclear matrix

Three-dimensional architecture and protein composition

David Capco, Katherine M. Wan, Sheldon Penman

Research output: Contribution to journalArticle

285 Citations (Scopus)

Abstract

The structural filament network of the nucleus is prepared while still connected to the cytoskeleton. The relatively gentle procedure removes about 98% of the DNA and at least 86% of the histones. The matrix is bounded by an outer nuclear lamina connected to the cytoskeletal framework, as well as the inner filaments. The filaments range in diameter from 3 to 22 nm, and are organized in a three-dimensional anastomosing network in which nucleoli are enmeshed. The nuclear matrix is separated from the cytoskeletal framework by a double detergent and then partitioned into a chromatin fraction and a matrix fraction by nuclease and high salt. Two-dimensional gel electrophoresis shows that the proteins of the cytoskeleton, chromatin and nuclear matrix are very different. A major protein found in all fractions cofocuses with actin. Vimentin is largely associated with the nuclear matrix, probably as a corona external of filaments.

Original languageEnglish (US)
Pages (from-to)847-858
Number of pages12
JournalCell
Volume29
Issue number3
DOIs
StatePublished - 1982
Externally publishedYes

Fingerprint

Nuclear Matrix
Chromatin
Cytoskeleton
Vimentin
Electrophoresis
Chemical analysis
Nuclear Lamina
Detergents
Histones
Actins
Proteins
Salts
Gels
Electrophoresis, Gel, Two-Dimensional
DNA

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology

Cite this

The nuclear matrix : Three-dimensional architecture and protein composition. / Capco, David; Wan, Katherine M.; Penman, Sheldon.

In: Cell, Vol. 29, No. 3, 1982, p. 847-858.

Research output: Contribution to journalArticle

Capco, David ; Wan, Katherine M. ; Penman, Sheldon. / The nuclear matrix : Three-dimensional architecture and protein composition. In: Cell. 1982 ; Vol. 29, No. 3. pp. 847-858.
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