Fire Amoeba: Cindiamoeba cascadensis Redefines Life

We dive into the Lassen Volcanic National Park discovery of Cindiamoeba cascadensis, a eukaryotic, obligate thermophile that not only survives but thrives at about 63°C. Explore its genome-wide toolkit for heat resilience—rapid signaling via calcium, MAPK, and ROS pathways; proteins with inherently higher melting temperatures; and a chorus of HSP20 chaperones that repair and keep essential machinery running. At 64°C the amoeba stays active; 80°C is enough to kill it. Its DNA appears in samples from Yellowstone to New Zealand, suggesting a global strategy for life in extreme heat. The findings push the boundaries of habitable worlds and hint at thermostable enzymes with huge industrial potential. 

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