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). Is distributed mostly in the cytoplasm and weakly in the nucleus (PubMed:22937162). CAHS proteins contain 2 repeats of 19-mer peptides designated as CAHS-motifs that comprise each two octapeptides connected by a tripeptide (PubMed:22937162). Trehalose, a disaccharide essential for several organisms to survive drying, is detected at low levels or not at all in some tardigrade species, indicating that tardigrades possess potentially novel mechanisms for surviving desiccation involving tardigrade-specific intrinsically disordered proteins (TDPs) (By similarity). Belongs to the Cytosolic-abundant heat soluble protein (CAHS) family.