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. 2003 Feb;69(2):987–995. doi: 10.1128/AEM.69.2.987-995.2003

FIG. 4.

FIG. 4.

SDS-PAGE of two mutants from generation 9. 3E3 is identical to 3A6 except for mutation N396S. The purified enzymes were deglycosylated using the N-glycosidase PNGaseF. Samples were analyzed before and after deglycosylation. The gel was stained with Coomassie brilliant blue.