Abstract
The major heat shock protein, hsp 70, of Dictyostelium discoideum was found to be rapidly phosphorylated. Analysis of [35S]methionine- and 32Pi-labeled hsp 70 revealed that two similar but distinct proteins of about 70,000 daltons each are synthesized at a high rate after a heat shock, and that each has a phosphorylated member. The phosphorylation chiefly modifies threonine residues. Rapid turnover of the phosphate group occurs, resulting in a steady-state condition in which only about half of the hsp 70 is phosphorylated at a given time.
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- BANDURSKI R. S., AXELROD B. The chromatographic identification of some biologically important phosphate esters. J Biol Chem. 1951 Nov;193(1):405–410. [PubMed] [Google Scholar]
- Beemon K., Hunter T. Characterization of Rous sarcoma virus src gene products synthesized in vitro. J Virol. 1978 Nov;28(2):551–566. doi: 10.1128/jvi.28.2.551-566.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cleveland D. W., Fischer S. G., Kirschner M. W., Laemmli U. K. Peptide mapping by limited proteolysis in sodium dodecyl sulfate and analysis by gel electrophoresis. J Biol Chem. 1977 Feb 10;252(3):1102–1106. [PubMed] [Google Scholar]
- Gustafson G. L., Milner L. A. Occurrence of N-acetylglucosamine-1-phosphate in proteinase I from Dictyostelium discoideum. J Biol Chem. 1980 Aug 10;255(15):7208–7210. [PubMed] [Google Scholar]
- Guttman S. D., Glover C. V., Allis C. D., Gorovsky M. A. Heat shock, deciliation and release from anoxia induce the synthesis of the same set of polypeptides in starved T. pyriformis. Cell. 1980 Nov;22(1 Pt 1):299–307. doi: 10.1016/0092-8674(80)90177-4. [DOI] [PubMed] [Google Scholar]
- Hunter T., Sefton B. M. Transforming gene product of Rous sarcoma virus phosphorylates tyrosine. Proc Natl Acad Sci U S A. 1980 Mar;77(3):1311–1315. doi: 10.1073/pnas.77.3.1311. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Loomis W. F., Jr Sensitivity of Dictyostelium discoideum to nucleic acid analogues. Exp Cell Res. 1971 Feb;64(2):484–486. doi: 10.1016/0014-4827(71)90107-8. [DOI] [PubMed] [Google Scholar]
- Loomis W. F., Wheeler S. Heat shock response of Dictyostelium. Dev Biol. 1980 Oct;79(2):399–408. doi: 10.1016/0012-1606(80)90125-6. [DOI] [PubMed] [Google Scholar]
- McAlister L., Finkelstein D. B. Heat shock proteins and thermal resistance in yeast. Biochem Biophys Res Commun. 1980 Apr 14;93(3):819–824. doi: 10.1016/0006-291x(80)91150-x. [DOI] [PubMed] [Google Scholar]
- Mirault M. E., Goldschmidt-Clermont M., Moran L., Arrigo A. P., Tissières A. The effect of heat shock on gene expression in Drosophila melanogaster. Cold Spring Harb Symp Quant Biol. 1978;42(Pt 2):819–827. doi: 10.1101/sqb.1978.042.01.082. [DOI] [PubMed] [Google Scholar]
- Saito H., Yamagata T., Suzuki S. Enzymatic methods for the determination of small quantities of isomeric chondroitin sulfates. J Biol Chem. 1968 Apr 10;243(7):1536–1542. [PubMed] [Google Scholar]
- Thieme T. R., Ballou C. E. Nature of the phosphodiester linkage of the phosphomannan from the yeast Kloeckera brevis. Biochemistry. 1971 Oct 26;10(22):4121–4129. doi: 10.1021/bi00798a017. [DOI] [PubMed] [Google Scholar]
- Wang C., Gomer R. H., Lazarides E. Heat shock proteins are methylated in avian and mammalian cells. Proc Natl Acad Sci U S A. 1981 Jun;78(6):3531–3535. doi: 10.1073/pnas.78.6.3531. [DOI] [PMC free article] [PubMed] [Google Scholar]