Cited by 929Alzheimer's disease research and treatmentsMicrotubule and mitosis dynamicsNeuroinflammation and Neurodegeneration Mechanisms

Expression of separate isoforms of human tau protein: correlation with the tau pattern in brain and effects on tubulin polymerization.

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Goedert, M., Jakes, R.·1990·The EMBO Journal

Abstract

We have expressed six previously cloned isoforms of human microtubule-associated tau protein in Escherichia coli and purified them to homogeneity in a biologically active form. They range from 352 to 441 amino acids in length and differ from each other by the presence of three or four tandem repeats in the carboxy-terminal half and by the presence or absence of 29 or 58 amino acid inserts in the amino-terminus. When mixed together they gave a set of six bands on SDS-PAGE gels with apparent molecular weights of 48-67 kd and with a characteristic pattern of spacings. Four of these bands aligned with the major tau bands found in adult human cerebral cortex following perchloric acid extraction and alkaline phosphatase treatment. They consisted of isoforms with three repeats and no insertions, four repeats and no amino-terminal insertions and three- and four-repeat containing isoforms with the 29 amino acid insertion. In fetal human brain extracts treated with alkaline phosphatase one of the two major tau bands aligned with the three-repeat containing isoform with no insertions, whereas the molecular nature of the second major tau band remains to be established. The recombinant tau isoforms were biologically active at micromolar concentrations, as assessed by their ability to promote microtubule assembly. The rates of assembly were 2.5-3.0 times faster for isoforms containing four repeats when compared with three-repeat containing isoforms, with no significant contribution by the amino-terminal insertions.

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Crossref · 10.1002/j.1460-2075.1990.tb07870.x

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  • 4R tau isoforms show a higher propensity to promote microtubule assembly compared to 3R tau isoforms.

    “Since tau binds to microtubules through C-terminal repeats within the microtubule-binding domain, 4R tau isoforms show a higher propensity to promote microtubule assembly compared to 3R tau isoforms [122, 123].”

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Research works printed but not linked: 7

  1. Goedert,M., Wischik,C.M., Crowther,R.A., Walker,J.E. and Klug,A. (1988) Proc. Natl. Acad. Sci. USA, 85, 4051-4055.
  2. Hirel,P.H., Schmitter,J.M., Dessen,P., Fayat,G. and Blanquet,S. (1989) Proc. Natl. Acad. Sci. USA, 86, 8247-8251.
  3. Kosik,K.S., Joachim,C.L. and Selkoe,D.J. (1986) Proc. Natl. Acad. Sci. USA, 83, 4044-4048.
  4. Weingarten,M.D., Lockwood,A.H., Hwo,S.Y. and Kirschner,M.W. (1975) Proc. Natl. Acad. Sci. USA, 72, 1858-1862.
  5. Wischik,C.M., Novak,M., Th0gersen,H.C., Edwards,P.C., Runswick,M.J., Jakes,R., Walker,J.E., Milstein,C., Roth,M. and Klug,A. (1988a) Proc. Natl. Acad. Sci. USA, 85, 4506-4510.
  6. Wischik,C.M., Novak,M., Edwards,P.C., Klug,A., Tichelaar,W. and Crowther,R.A. (1988b) Proc. Natl. Acad. Sci. USA, 85, 4884-4888.
  7. Wood,J.G., Mirra,S.S., Pollock,N.J. and Binder,L.I. (1986) Proc. Natl. Acad. Sci. USA, 83, 4040-4043. Received on August 28, 1990 4230 14602075, 1990, 13, Downloaded from https://www.embopress.org/doi/10.1002/j.1460-2075.1990.tb07870.x by Readcube (Labtiva Inc.), Wiley Online Library on [14/08/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI

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Authors
Goedert, M., & Jakes, R.
Affiliations
MRC Laboratory of Molecular Biology (GB)
Venue
The EMBO Journal
Published
1990-12-01
Volume
9
Issue
13
Pages
4225-4230
ISSN
  • 0261-4189 (ISSN-L)
  • 1460-2075
OpenAlex
W1509571186
Cited by
929
References
46
Citations by year
2026: 23 · 2025: 29 · 2024: 50 · 2023: 39 · 2022: 40 · 2021: 53 · 2020: 34 · 2019: 39 · 2018: 42 · 2017: 41 · 2016: 27 · 2015: 37 · 2014: 18 · 2013: 21 · 2012: 25
FWCI
15.03
Type
journal article
Language
en
Open access
Locations
  • The EMBO Journal (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
tau protein, tau isoforms, microtubule-associated proteins, microtubule assembly, tandem repeats, recombinant protein expression, cerebral cortex, fetal brain
MeSH terms
Aged, Alkaline Phosphatase, Alzheimer Disease, Amino Acid Sequence, Brain, Escherichia coli, Humans, Isomerism, Microtubule-Associated Proteins, Middle Aged, Molecular Sequence Data, Recombinant Proteins, Repetitive Sequences, Nucleic Acid, RNA Splicing, RNA, Messenger, Tubulin, Mutagenesis, Site-Directed, tau Proteins

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