Hydroxyectoin

Hydroxyectoin (Pyrostatin A) is a natural substance that acts as a cytoprotective agent. Hydroxyectoin can be used in research related to Alzheimer's disease^[1][2][3]. In Vitro:Hydroxyectoin exhibits superior glass-forming properties with a glass transition temperature of 87 °C, making it an effective desiccation protectant for biomolecules and cells^[2].
Hydroxyectoin increases the melting temperature of DNA, distinguishing its effect on DNA stability from that of Ectoine (HY-107784)^[2].
Hydroxyectoin (0.5-1.0 M; 4 cycles of fast freezing/slow defrosting) preserves the activity of purified lactate dehydrogenase, glutamate dehydrogenase, carboxylesterase, and CD30 binding protein under freeze-thaw stress, with 1.0 M maintaining full lactate dehydrogenase activity and 0.5 M maintaining full carboxylesterase activity^[3].
Hydroxyectoin (0.1-2.0 M) preserves the activity of multiple purified proteins under elevated temperature stress, with 1.0 M maintaining full phosphofructokinase activity and 0.5 M maintaining active monoclonal antibodies and 90% lactate dehydrogenase activity^[3].
Hydroxyectoin (0.4-1.0 M) preserves the activity of purified phosphofructokinase and enolase under freeze-drying stress, with 0.4 M maintaining 97% enolase activity^[3].
Hydroxyectoin (3.0 M) increases the melting temperature of purified RNase A by 12 K, enhancing its thermal stability^[3].
Hydroxyectoin protects Pseudomonas putida and Escherichia coli against desiccation, enhancing cell survival and stability after drying^[3].
Hydroxyectoin induces thermotolerance in Escherichia coli, enhancing its survival under high temperature stress^[3].
Hydroxyectoin protects recombinant proteins and immunotoxins against multiple stressors including degradation, aggregation, conformational change, and freeze-thaw damage in vitro^[3].
Hydroxyectoin increases the melting temperature of purified DNA and improves the quality of DNA microarrays in vitro^[3].
Hydroxyectoin (0.5 M) preserves 95% of purified lactate dehydrogenase activity under oxidative stress from H₂O₂^[3].
Hydroxyectoin (Pyrostatin A) inhibits aggregation and neurotoxicity of Alzheimer's Aβ42 peptide in vitro^[3].