CAHS proteins are cytosolic heat soluble proteins that seem to contribute to the anhydrobiosis in tardigrades, but their specific mechanisms are yet to be identified (PubMed:22937162, PubMed:33545053). It is possible that protection during anhydrobiosis might occur via the stabilization of vitrifying small molecules such as sugars, but not via the direct glass transition of CAHS proteins themselves (Probable). CAHS proteins contain 2 repeats of 19-mer peptides designated as CAHS-motifs that comprise each two octapeptides connected by a tripeptide (PubMed:27649274). Belongs to the Cytosolic-abundant heat soluble protein (CAHS) family.