This family includes members from a wide variety of eukaryotes. It includes the TB2/DP1 (deleted in polyposis) protein (e.g. Swiss:Q00765), which in humans is deleted in severe forms of familial adenomatous polyposis, an autosomal dominant oncological inherited disease. The family also includes the plant protein of known similarity to TB2/DP1, the HVA22 abscisic acid-induced protein (e.g. Swiss:Q07764), which is thought to be a regulatory protein.

1: Familial adenomatous polyposis. Lal G, Gallinger S; Semin Surg Oncol 2000;18:314-323. PMID:10805953

2: Hormone response complex in a novel abscisic acid and cycloheximide-inducible barley gene. Shen Q, Uknes SJ, Ho TH; J Biol Chem 1993;268:23652-23660. PMID:8226892