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Figure 1
Overexpressed and purified rDer f 21 analyzed using 12% SDS–PAGE followed by Coomassie Blue staining. Lane 1, PageRuler Plus Prestained protein ladder (labelled in kDa; Thermo Scientific, USA). Lane 2, pellet of crude extract before IPTG induction as a negative control. Lanes 3–5, total protein, pellet and supernatant of crude extract after IPTG induction, respectively. Lane 6, purified rDer f 21 protein using Ni–NTA affinity chromatography.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
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