Small heat shock protein Hsp27 protects myosin S1 from heat-induced aggregation, but not from thermal denaturation and ATPase inactivation.

@article{Markov2008SmallHS,
  title={Small heat shock protein Hsp27 protects myosin S1 from heat-induced aggregation, but not from thermal denaturation and ATPase inactivation.},
  author={Denis I. Markov and Anastasia V Pivovarova and Ivan S. Chernik and Nikolai B Gusev and Dmitrii I Levitsky},
  journal={FEBS letters},
  year={2008},
  volume={582 10},
  pages={1407-12}
}
We applied different methods, such as turbidity measurements, dynamic light scattering, differential scanning calorimetry and co-sedimentation assay, to analyze the interaction of small heat shock protein Hsp27 with isolated myosin head (myosin subfragment 1, S1) under heat-stress conditions. Upon heating at 43 degrees C, Hsp27 effectively suppresses S1 aggregation, and this effect is enhanced by mutations mimicking Hsp27 phosphorylation. However, Hsp27 was unable to prevent thermal unfolding… CONTINUE READING
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