FIG. 1.

The yqxM sipW tasA locus and DNA constructs. (A) The yqxM sipW tasA locus. Open boxes represent genes, and the region likely to contain the promoter(s) is indicated by a bracket. Restriction sites are indicated. (B) Transcriptional reporter fusion constructs. Black boxes represent the lacZ gene of E. coli. Names of strains bearing these fusions are indicated. Fusions were inserted by marker replacement at the amyE locus except for sipW-lacZ (a gift from J. M. van Dijl), which was integrated by single-reciprocal integration, indicated by the dotted line (to generate AGS307).