Heat shock triggers rapid protein phosphorylation in soybean seedings

Biochem Biophys Res Commun. 1987 Oct 29;148(2):762-7. doi: 10.1016/0006-291x(87)90941-7.

Abstract

Heat shock arrests the synthesis of many cellular proteins and simultaneously initiates expression of a unique set of proteins, termed heat shock proteins. We have found that heat shock rapidly triggers phosphorylation of a set of proteins in soybean seedlings. Although the kinetics of phosphorylation and the heat shock response are similar, the major identified phosphorylation products do not comigrate with heat shock proteins on polyacrylamide gels. Cadmium, which is known to induce the heat shock response, stimulates phosphorylation of the same set of proteins. The rapidity of phosphorylation suggests that it may play a pivotal role in sensing and transducing elevated temperature stress in plants.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cadmium / pharmacology
  • Heat-Shock Proteins / genetics
  • Heat-Shock Proteins / metabolism*
  • Hot Temperature*
  • Phosphates / metabolism
  • Phosphoproteins / biosynthesis*
  • Phosphoproteins / isolation & purification
  • Phosphorus Radioisotopes
  • Phosphorylation
  • Plant Proteins / genetics
  • Plant Proteins / metabolism*
  • Plants / metabolism*
  • Protein Biosynthesis
  • Soybeans

Substances

  • Heat-Shock Proteins
  • Phosphates
  • Phosphoproteins
  • Phosphorus Radioisotopes
  • Plant Proteins
  • Cadmium