FIG 4.
SP1-Zip constructs. (A) Schematic and sequence of the SP1-Zip construct; (B) SDS-PAGE of purified SP1-Zip visualized by Coomassie brilliant blue staining. Lanes: 1, MW marker (in thousands); 2, uncleaved SP1-Zip; 3, thrombin-cleaved SP1-Zip.
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