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Research concerns the physiological and biochemical adaptations to subzero temperatures of thermal conformers (those organisms with body temperatures that match the environment). Most studies are on insects, but other organisms (including plants, spiders and other terrestrial invertebrates) are also of interest. These organisms adapt to subzero winter temperatures by either becoming freeze tolerant (able to survive extracellular freezing) or freeze avoiding. Freeze avoiding species generally produce antifreezes, such as polyols (glycerol, etc) and/or antifreeze proteins (AFPs). We have been particularly concerned with the AFPs, and our studies have ranged from investigations of the function of the proteins, to hormonal and environmental cues controlling their production, to protein chemistry and molecular biology designed to determine their structure/antifreeze function relationships. Studies with freeze tolerant organisms have concentrated on ice nucleating proteins which function to induce ice formation in the extracellular fluid at high subzero temperature, and also on their AFPs. Antifreeze proteins function in certain freeze tolerant organisms not to prevent freezing, but as cryoprotectants to inhibit the damage resulting from freezing of body water.
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John G. Duman, Samuel S. Newton
Antifreeze Proteins Volume 1pp.131-187, (2020)
John G. Duman, Samuel S. Newton
Antifreeze Proteins Volume 1pp.227-273, (2020)
Antifreeze Proteins Volume 1pp.189-226, (2020)
2016 International Congress of Entomology (2016)
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