'Heads and tails' of intermediate filament phosphorylation: multiple sites and functional insights

M. Bishr Omary, Nam On Ku, Guo Zhong Tao, Diana M. Toivola, Jian Liao

Research output: Contribution to journalReview article

201 Citations (Scopus)

Abstract

Intermediate filaments (IFs) are major components of the mammalian cytoskeleton. They are among the most abundant cellular phosphoproteins; their phosphorylation typically involves multiple sites at repeat or unique motifs, preferentially within the 'head' or 'tail' domains. Phosphorylation and dephosphorylation are essential for the regulation of IF dynamics by modulating the intrinsic properties of IFs: solubility, conformation and filament organization, and, in addition, for the regulation of other IF post-translational modifications. These phosphorylation-regulated properties dictate generalized and context-dependent IF functions that reflect their tissue-specific expression. Most important among IF phosphorylation-mediated functions are the regulation of IF cellular or subcellular compartmentalization, levels and turnover, binding with associated proteins, susceptibility to cell stresses (including apoptosis), tissue-specific functions and IF-associated disease pathogenesis (where IF hyperphosphorylation also serves as a tissue-injury marker).

Original languageEnglish
Pages (from-to)383-394
Number of pages12
JournalTrends in Biochemical Sciences
Volume31
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1

Fingerprint

Phosphorylation
Intermediate Filaments
Head
Tissue
Phosphoproteins
Conformations
Solubility
Apoptosis
Post Translational Protein Processing
Cytoskeleton
Proteins
Wounds and Injuries

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology

Cite this

Omary, M. Bishr ; Ku, Nam On ; Tao, Guo Zhong ; Toivola, Diana M. ; Liao, Jian. / 'Heads and tails' of intermediate filament phosphorylation : multiple sites and functional insights. In: Trends in Biochemical Sciences. 2006 ; Vol. 31, No. 7. pp. 383-394.
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'Heads and tails' of intermediate filament phosphorylation : multiple sites and functional insights. / Omary, M. Bishr; Ku, Nam On; Tao, Guo Zhong; Toivola, Diana M.; Liao, Jian.

In: Trends in Biochemical Sciences, Vol. 31, No. 7, 01.07.2006, p. 383-394.

Research output: Contribution to journalReview article

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AU - Omary, M. Bishr

AU - Ku, Nam On

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AB - Intermediate filaments (IFs) are major components of the mammalian cytoskeleton. They are among the most abundant cellular phosphoproteins; their phosphorylation typically involves multiple sites at repeat or unique motifs, preferentially within the 'head' or 'tail' domains. Phosphorylation and dephosphorylation are essential for the regulation of IF dynamics by modulating the intrinsic properties of IFs: solubility, conformation and filament organization, and, in addition, for the regulation of other IF post-translational modifications. These phosphorylation-regulated properties dictate generalized and context-dependent IF functions that reflect their tissue-specific expression. Most important among IF phosphorylation-mediated functions are the regulation of IF cellular or subcellular compartmentalization, levels and turnover, binding with associated proteins, susceptibility to cell stresses (including apoptosis), tissue-specific functions and IF-associated disease pathogenesis (where IF hyperphosphorylation also serves as a tissue-injury marker).

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