Tau 2: A Probe for a Ser Conformation in the Amino Terminus of τ

Nobuo Watanabe, Koji Takio, Masato Hasegawa, Takao Aral, Koiti Titani, Yasuo Ihara

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Abstract: We have determined the epitope for Tau 2, a monoclonal antibody that intensely stained tangles, plaque neurites, and curly fibers in the tissue section, and strongly labeled bovine τ, but only very weakly labeled human r on the blot. The epitope has been localized to Ala95 through Ala108 of bovine τ. Ser101 is critical for Tau 2 reactivities; the replacement of Ser by Pro, which is found in rat, mouse, and human T, brings about very weak Tau 2 reactivities. The strong Tau 2 staining of tangles and its effective absorption with a synthetic Ser peptide (Ala95 through Ala108) suggest that the τ in paired helical filaments takes a Ser conformation, rather than a Pro conformation, in its ammo‐terminal portion.

Original languageEnglish
Pages (from-to)960-966
Number of pages7
JournalJournal of Neurochemistry
Issue number3
Publication statusPublished - 1992 Mar


  • Alzheimer's disease
  • Epitope mapping
  • Paired helical filaments–τ
  • Tau 2

ASJC Scopus subject areas

  • Biochemistry
  • Cellular and Molecular Neuroscience


Dive into the research topics of 'Tau 2: A Probe for a Ser Conformation in the Amino Terminus of τ'. Together they form a unique fingerprint.

Cite this