Hsp 70 expression and function during gametogenesis

Analysis of hsp 30, hsp 70 and ubiquitin gene expression in Xenopus laevis tadpoles.

Heat-induced accumulation of hsp 30 mRNA (1.1 kb) during early development of Xenopus laevis was first detectable at the tailbud stage (stage 30-34). This contrasts with heat-induced accumulation of hsp 70 mRNA (2.7 kb) and ubiquitin mRNA (size range = 1.7-3.1 kb), which was first detectable at the mid- to late-blastula stage. Continuous exposure of tadpoles to a 33 degrees C heat shock resulte...

The human HSP 70 / HSP 40 chaperone family

Hsp 104 , Hsp 70 , and Hsp 40 : A Novel Chaperone System that Rescues Previously Aggregated

are involved in protein turnover. Neither ClpA nor ClpX Hsp104 is a stress tolerance factor that promotes the has intrinsic proteolytic activity. Rather, both proteins reactivation of heat-damaged proteins in yeast by an confer ATP-dependent turnover of their substrates unknown mechanism. Herein, we demonstrate that through a physical association with an unrelated oligoHsp104 functions in this ...

Expression of HSP-28 and Three HSP-70 Genes during the Development and Decay of Thermotolerance in Leukemic and Nonleukemic Human Tumors1

Leukemic cells appear to develop less thermotolerance and then to lose their thermotolerance more rapidly than do other tumor cell lines. The reason for this phenomenon is not known. After heat shock (or other environmental stresses), mammalian cells preferentially synthesize a set of proteins known as heat shock proteins (HSPs). HSP-28 and the various isoforms of HSP-70 have been suggested as ...

Expression of HSP-28 and three HSP-70 genes during the development and decay of thermotolerance in leukemic and nonleukemic human tumors.

Leukemic cells appear to develop less thermotolerance and then to lose their thermotolerance more rapidly than do other tumor cell lines. The reason for this phenomenon is not known. After heat shock (or other environmental stresses), mammalian cells preferentially synthesize a set of proteins known as heat shock proteins (HSPs). HSP-28 and the various isoforms of HSP-70 have been suggested as ...