Erratum

Salmonella maintains the integrity of its intracellular vacuole through the action of SifA. Beuzón Carmen R., Méresse Stéphane, Unsworth Kate E., Ruíz-Albert Javier, Garvis Steve, Waterman Scott R., Ryder Timothy A., Boucrot Emmanuel, Holden David W. The EMBO Journal. 2000;19:3235–3249. doi: 10.1093/emboj/19.13.3235.

The publishers apologize for the error printed in the footnotes of Table I. Table I is shown correctly below.

Table I. Competitive Index analysis of S.typhimurium mutants.

Mixed infectiona	C.I.b
Controls
wt versus ssaV–	0.006
wt versus purD–	0.0005
ssaV– versus ssaV–, purD–	0.0038d
purD– versus ssaV–, purD–	0.019d
wt versus ssaV–, purD–	0.00006
wt versus sseB–	0.016
ssaV– versus ssaV–, sseB–	1.2c
sseB– versus ssaV–, sseB–	0.82c
wt versus ssaV–, sseB–	0.014
ompR/envZ
wt versus ompR–	0.008
ssaV– versus ssaV–, ompR–	0.823c
ompR– versus ssaV–, ompR–	0.21c
wt versus ssaV–, ompR–	0.010
sifA
wt versus sifA–	0.012
sifA– psifA versus sifA–	0.074d
ssaV– versus ssaV–, sifA–	1.34c
sifA– versus ssaV–, sifA–	1.17c
wt versus ssaV–, sifA–	0.0019

^aStrains used in the mixed infection experiments are referred to by the relevant genotype and are described in Table II. The ssaV^– strain used was marked with either Km or Cm resistance cassettes to distinguish it from the competing strain.

^bThe C.I. was calculated as the output ratio of mutant or double mutant to wild-type or single mutant bacteria, divided by the input ratio. The C.I.s shown are the means of three independent infections of mice. Mice were inoculated i.p. with a mixture of two strains comprising ∼5 × 10⁴ c.f.u. of each strain. Mouse spleens were harvested after 48 h for enumeration of bacterial c.f.u. The different strains used were differentiated on the basis of antibiotic sensitivity. The C.I.s of double mutant versus single mutant strains were analysed by Student’s t-test.

^cNot significantly different from 1.0 (p <0.05).

^dNot significantly different from the C.I. of the corresponding single mutant strain versus wild-type strain.