TABLE 3.

P^app and P_Endo measured with α-chitin

Enzyme	Papp	PEndo
ChiAWT	36 ± 5a	0.76 ± 0.11a
W275A	14 ± 3	0.88 ± 0.18
W167A	16 ± 2	0.90 ± 0.13

^a Standard deviations are from at least three independent measurements.