Table 1.

P. larvae strain selectivity of PlyPalA^a

P. larvae strain	% Loss in OD600	ERIC Genotype
NRRL B-3650	84.9% ± 0.6%	I
NRRL B-3554	78.0% ± 0.9%	I
ATCC 25748	72.8% ± 2.0%	I
NRRL B-2605	72.1% ± 1.2%	I
ATCC 25747	62.7% ± 1.4%	I
2188	57.2% ± 2.6%	I
ATCC 25367	49.4% ± 1.6%	IV
2231	42.4% ± 0.5%	I
ATCC 3688	23.3% ± 2.2%	III/IV
ATCC 25368	22.9% ± 3.3%	IV
ATCC 49843	12.2% ± 2.1%	IV
E. coli (-)	-1.6% ± 3.1%	N/A

^aPlyPalA is most effective against P. larvae strains corresponding to ERIC genotype I. Standard deviations were calculated from the ratio of OD₆₀₀ of lysin-treated wells versus buffer treated wells (in triplicate). E. coli was used as a negative control. ERIC genotypes for NRRL B-2605 and ATCC 49843 were taken from a previous study¹⁷ and determined experimentally by ERIC PCR for other strains (data not shown).