A disintegrin and metalloproteinase domain-like protein decysin-1 (ADAMDEC1)

A disintegrin and metalloproteinase domain-like protein decysin-1 (ADAMDEC1) is a unique, secreted metalloprotease belonging to the ADAM (a disintegrin and metalloproteinase) family[1][4][5]. Unlike most ADAMs, ADAMDEC1 lacks a transmembrane domain and cytoplasmic tail, resulting in a soluble, secreted form. It features a rare zinc-binding motif (HEXXHXXGXXD), which confers unusual resistance to classical metalloprotease inhibitors and modulates its substrate specificity and enzymatic activity[1][4][6]. ADAMDEC1 is expressed mainly in cells of the innate immune system (dendritic cells, monocyte-derived macrophages), with predominant localization in the gastrointestinal tract, where it has roles in mucosal immunity and tissue homeostasis[1][4][6]. Its upregulation is observed in specific pathologies, including inflammatory diseases (such as Crohn’s disease and sarcoidosis) and a range of cancers (notably GI tumors and glioblastoma), and it may serve as a context-dependent modulator of inflammation and epithelial defense. Despite strong evidence of proteolytic activity and involvement in cell competition mechanisms, its precise endogenous substrates and full spectrum of physiological functions remain incompletely characterized[1][2][4][5][6].

Other names

ADAM like decysin 1ADAM DEC1ADAMDEC1ADAM-like protein decysin-1M12.219DecysinDisintegrin protease

Proteolysis of specific (but not fully characterized) substrates (e.g., α2-macroglobulin, pro-EGF). Regulation of cellular interactions in immune and epithelial cells (e.g., apical extrusion of transformed cells, possibly independent of enzymatic activity).