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Map of plasmid pBS100. 'xylA, xylose isomerase gene 5' fragment (659 bp); xylA', xylose isomerase gene 3' fragment (679 bp); 'LacZ, β-galactosidase α-fragment 5' part; LacZ', β-galactosidase α-fragment 3' part; fi, replication origin; cm, chloramphenicol acetyltransferase gene; bla, ampicillin resistance gene.
