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. 2004 Jul;70(7):3831–3838. doi: 10.1128/AEM.70.7.3831-3838.2004

TABLE 1.

Purification of Photorhabdus sp. strain Az29 proteases

Purification step Total protein (mg) Total activity (U) Sp act (U/mg) Purification (fold) Yield (%)
Supernatant 33.32 184,000 5,522 11 100
Ammonium sulfate 8.71 70,000 8,037 1.46 38
DEAE-Sepharose 2.38 67,340 28,306 5.13 37
HiTrap Q-Sepharose PrtA 0.39 13,076 33,442 6.06 7
HiTrap Q-Sepharose PrtS 1.0 22,950 22,723 4.12 12
Mono-Q PrtS 0.17 4,455 26,518 4.8 2