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Applied and Environmental Microbiology, November 2001, p. 5349-5349, Vol. 67, No. 11
Development and Characterization of a Xylose-Dependent System
for Expression of Cloned Genes in Bacillus
subtilis: Conditional Complementation of a Teichoic Acid Mutant
Antimicrobial Research Centre, Department of Biochemistry,
McMaster University, Hamilton, Ontario, Canada L8N 3Z5
Volume 67, no. 1, p. 403-410, 2001. Page 405, Fig. 1: the
plasmid map depicted in Fig. 1a is not correct; the orientation of the
plasmid backbone is the reverse of that shown in the published article.
Figure 1 should read as shown below.
0099-2240/01 DOI:
Copyright © 2001, American Society for Microbiology. All rights reserved.
ERRATUM

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FIG. 1.
Map of plasmid pSWEET-bgaB. (a) Significant
features of the xylose-based expression system. Plasmid
pSWEET-bgaB is a derivative of pDG364 (3), which allows
integration into the B. subtilis chromosome at
amyE via double recombination and selection with CHL (10 µg/ml). The plasmid also has an E. coli origin of
replication and ampicillin resistance cassette (50 µg/ml) for routine
cloning steps. On the outside of the plasmid map restriction sites of
interest are highlighted, including two PstI sites for
convenient plasmid linearization, a PacI site (eight-base
recognization sequence TTAATTAA) upstream of bgaB, and a
polylinker downstream of bgaB (HindIII is not
unique). (b) Close-up of key elements of the xylose expression system
(not to scale). Shown are xylR, encoding the xylose
repressor; the xyl intergenic region, including promoters
for xylR (PxylR), xylA
(PxylA), and xyl operator
sequences (xylO); translationally truncated xylA
(first 58 nucleotides followed by an in-frame TAA), including an
optimized CRE in xylA (see Materials and Methods and
reference 18); PacI 5' cloning site; ribosome binding site
(SD) native to B. subtilis tagD; and gene bgaB,
encoding a thermostable
-galactosidase from B. stearothermophilis.
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