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PMID:3782032
| Citation |
Gomes, SL, Juliani, MH, Maia, JC and Silva, AM (1986) Heat shock protein synthesis during development in Caulobacter crescentus. J. Bacteriol. 168:923-30 |
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| Abstract |
Caulobacter crescentus cells respond to a sudden increase in temperature by transiently inducing the synthesis of several polypeptides. Two of the proteins induced, Hsp62 and Hsp70, were shown to be analogous to the heat shock proteins of Escherichia coli, GroEL and DnaK, respectively, by immunological cross-reactivity with antibodies raised against the E. coli proteins. Two-dimensional gel electrophoretic resolution of extracts of cells labeled with [35S]methionine during heat shock led to the identification of 20 distinct Hsps in C. crescentus which are coordinately expressed, in response to heat, at the various stages of the cell division cycle. Thus, a developmental control does not seem to be superimposed on the transient activation of the heat shock genes. Nonetheless, under normal temperature conditions, four Hsps (Hsp70, Hsp62, Hsp24b, and Hsp23a) were shown to be synthesized, and their synthesis was cell cycle regulated. |
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| Keywords |
Bacterial Proteins/biosynthesis; Cell Cycle; Gram-Negative Bacteria/cytology; Gram-Negative Bacteria/growth & development; Gram-Negative Bacteria/metabolism; Heat-Shock Proteins/biosynthesis; Hot Temperature |
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Significance
Annotations
| Gene product | Qualifier | GO Term | Evidence Code | with/from | Aspect | Extension | Notes | Status |
|---|---|---|---|---|---|---|---|---|
| GO:0009408: response to heat |
ECO:0000315: |
P |
Figure 1: When C. crescentus cells (normally grown in 30 degrees Celsius) are transferred to a high temperature (40 degrees Celsius), the cell synthesizes 4 proteins sizes 28, 62, 70, and 83 kDa. |
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See also
References
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