A novel 40-kDa protein induced by heat shock and other stresses in mammalian and avian cells

  • Ohtsuka K
  • Masuda A
  • Nakai A
 et al. 
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When HeLa cells were exposed to heat shock or other stresses, a 40-kDa protein (p40) was induced in addition to the classical heat shock proteins with molecular sizes of 110-, 90-, 70-, and 47-kDa. The p40 was induced not only by heat shock but by arsenite and 2-azetidine carboxylic acid. Also, it was induced in rat, mouse and chick cells by these stresses. The p40 was a basic protein (pI {geometrically equal to} 9.2) as judged by two-dimensional gel electrophoresis. To our knowledge, p40 is a novel heat shock protein in mammalian and avian cells. © 1990.

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  • Kenzo Ohtsuka

  • Akira Masuda

  • Akira Nakai

  • Kazuhiro Nagata

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