InterPro domain: IPR008390

Members of this family are 19kDa membrane proteins. The levels of the plant protein AWPM-19 increase dramatically when there is an increase level of abscisic acid. The increase presence of this protein leads to greater tolerance of freezing [ 1 ]. The rice homologue, OsPM19L1, is induced by osmotic stress and may be associated with stress tolerance through ABA-dependent pathway [ 2 ].

1. Accumulation of 19-kDa plasma membrane polypeptide during induction of freezing tolerance in wheat suspension-cultured cells by abscisic acid. Plant Cell Physiol. 38, 707-16
2. Characterization of OsPM19L1 encoding an AWPM-19-like family protein that is dramatically induced by osmotic stress in rice. Genet. Mol. Res. 14, 11994-2005