Table 2. Parameters used to determine the concentration of KLK5 enzyme.

Parameter	Value	Reference
Dry weight of KLK5 enzyme	3.1 ng.(mg dry tissue −1)	[13]
Molecular weight of KLK5	33 kDa	[20]
Water content of corneum	0.5 g.g−1	[47]
Volume proportion of extracellular water	13%	[8, 48]
Estimated enzyme concentration	0.723 μM