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. 1998 May;64(5):1644–1649. doi: 10.1128/aem.64.5.1644-1649.1998

FIG. 2.

FIG. 2

Expression of DSR-S and truncated enzymes in E. coli DH1. (A) SDS-PAGE analysis of wild-type and truncated proteins. (B) Assay for soluble glucan synthesis following SDS-PAGE. Lanes 1, wild-type DSR-S; lanes 2, DSR-S1; lanes 3, DSR-S2; lanes 4, DSR-S3; lanes 5, DSR-S4; lanes 6, cell extract from E. coli DH1(pTrc99A); lane M, molecular weight standards.