A 3.5-kb DNA fragment from the Clarke and Carbon Escherichia coli geno
mic clone, PLC37-44, was sequenced on both strands. Part of the zwf ge
ne, encoding glucose-6-phosphate dehydrogenase, and all of the edd and
eda genes, encoding 6-phosphogluconate dehydratase and 2-keto-3-deoxy
-6-phosphogluconate aldolase, respectively, of the Entner-Doudoroff pa
thway, were identified. These data are compared with those of Egan et
al. [J. Bacteriol. 174 (1992) 4638-4646] and important differences wer
e noted.