Molecular Parameters for the Anti-Human Immunodeficiency Virus Activity of T22 ([Tyr5,12, Lys7]-Polypheniusin II)

Akira Otaka, Hirokazu Tamamura, Yoshihiro Terakawa, Masao Masuda, Takaki Koide, Katsumi Matsuzaki, Koichiro Miyajima, Toshiro Ibuka, Nobutaka Fujii

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


T22 ([Tyr5,12, Lys7]-polyphemusin II) was found to exhibit strong anti-human immunodeficiency virus (HIV) activity and exert its effects on a virus-cell fusion process. In the present study, the all-D enantiomer of T22 and its related compounds were synthesized to examine the molecular parameters required for the interaction of T22 with membrane components of cells or viruses in order to exert this anti-HIV activity. The anti-HIV activity of these analogs was investigated in comparison with their membrane permeability with aspect to large unilamellar vesicles (LUVs). The all-D enantiomer of T22 exhibited a 20-fold lower anti-HIV activity compared with T22, whereas they both showed the same membrane permeability. No positive correlation between anti-HIV activity and membrane permeability was observed. These results suggest that the anti-HIV activity of T22 is mediated through the interaction with chiral component(s) of the cell or virus.

Original languageEnglish
Pages (from-to)1669-1672
Number of pages4
JournalBiological and Pharmaceutical Bulletin
Issue number12
Publication statusPublished - 1994
Externally publishedYes


  • T22
  • anti-human immunodeficiency virus peptide
  • chiral component
  • polyphemusin
  • tachyplesin

ASJC Scopus subject areas

  • Pharmacology
  • Pharmaceutical Science


Dive into the research topics of 'Molecular Parameters for the Anti-Human Immunodeficiency Virus Activity of T22 ([Tyr<sup>5,12</sup>, Lys<sup>7</sup>]-Polypheniusin II)'. Together they form a unique fingerprint.

Cite this