Table 2.

In vivo phage plaquing assays

Residue substitution	Fold reduction in titre
K9A	<10
E17A	107
R19A	<10
E21A	<10
N22A	<10
E24A	107
E24K	<10
D42A	<10
T45A	<10
E47A	<10
K51A	<10
P52A	<10
E62A	<10
R64A	<10
N84A	<10
N85A	<10
K86A	<10
K88A	<10
E91A	<10
D108A	107
D108E	<10
Δ112–123	<10