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Structure of the recombinant plasmid pHR2 (~6.86 kb). yqhD E. coli alcohol dehydrogenase gene, open rectangle MCS, TpepN transcription terminator, sh71rep replication origin for Lactobacillus, ermL erythromycin-resistance marker, PssIP and PorfX inducible promoters, sppK and sppR histidine protein kinase and response regulator respectively.
