Mitochondrial heat soluble protein acting as a molecular shield in water-deficient condition. Contiguous repeats of the 11-mer LEA motif is characteristic of group 3 LEA proteins and form an amphipathic helical structure under water-deficient conditions. Belongs to the LEA type 4 family. Was identified as a CAHS family protein, an intrinsically unstructured protein that shows heat-dependent glass transition, which contributes to the vitrification of cells, and this further leads to desiccation tolerance (PubMed:28306513). However, it actually belongs to the LEA type 4 family of proteins and there was no evidence supporting glass transition itself to be contributing to the glass transition of the whole tardigrade (PubMed:33545053).