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. 2015 Oct 19;15:96. doi: 10.1186/s12896-015-0215-z

Table 2.

Purification of PulN by Ni-NTA affinity chromatography

Purification step Total activity (U) Total protein (mg) Specific activity (U/mg) Yield (%) Purification fold
Crude extract 292.05 77.26 3.78 100.00 1.00
Ni-NTA 171.41 10.60 16.17 58.7 4.28

The crude enzyme was obtained from 45 ml culture and 10 ml purified enzyme was obtained.