3.4.24.79	half-life of circulating PAPP-A and proMBP in complex is severalfold higher than both of the uncomplexed proteins	
3.4.24.79	high salt condition, SDS, or beta-mercaptoethanol inhibit	
3.4.24.79	Triton X-100, Tween-20, NP-40, sodium azide, glycerol do not affect enzyme activity