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The pelA, pelD and pelE genes encode three of the five major pectate lyase (PL) isoenzymes (PLa, PLd and PLe) in Erwinia chrysanthemi strains B374 and 3937. These genes were previously isolated from genomic libraries or by in vivo cloning as R' factors promoted by the pULB113 plasmid. They are clustered near purE on the chromosomal map of E. chrysanthemi(More)
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