1. a set of enzymes believed to snip pieces off a longer protein producing fragments of amyloid protein that bunch up and create amyloid protein plaques in brain tissue (the pathological hallmark of Alzheimer's);
WordNet (r) 3.0 (2006):
secretase
n 1: a set of enzymes believed to snip pieces off a longer
protein producing fragments of amyloid protein that bunch
up and create amyloid protein plaques in brain tissue (the
pathological hallmark of Alzheimer's)