correction Halocarbons produced by natural oxidation processes during degradation anic matter.pdf

letters to nature
Received 15 September; accepted 6 November 2000. Medical Research Foundation of Oregon (.) and the American Heart Association
(.).
1. Saier, M. H. Jr et al. Evolutionary origins of multidrug and drug-speci®c ef¯ux pumps in bacteria.
FASEB J. 12, 265±274 (1998). Correspondence and requests for materials should be addressed to .
2. Ahmed, M., Borsch, C. M., Taylor, S. S., Vazques-Laslop, N. & Neyfakh, A. A. A protein that activates (e-mail: ******@). Coordinates for the BmrR±TPP±DNA and BmrR±TPSb±
expression of a multidrug ef¯ux transporter upon binding the transporter substrates. J. Biol. Chem. plexes have been deposited in the RCSB Protein database under accession code
269, 28506±28513 (1994). 1exj and 1exi, respectively.
3. Brooun, A., Tomashek, J. J. & Lewis, K. Puri®cation and ligand binding of EmrR, a regulator of a
multidrug transporter. J. Bacteriol. 181, 5131±5133 (1999).
4. Grkovic, S., Brown, M. H., Roberts, N. J., Paulsen, I. T. & Skurray, R. A. QacR is a repressor protein
that regulates expression of the us aureus multidrug ef¯ux pump QacA. J. Biol. Chem. 273,
18665±18673 (1998). .................................................................
5. Markham, P. N., LoGuidice, J. & Neyfakh, A. A. Broad ligand speci®city of the transcriptional
regulator of the Bacillus subtilis multidrug transporter Bmr.