JOURNAL OF BACTERIOLOGY

Volume 188 August 2006 No. 15

STRUCTURAL BIOLOGY

Crystal Structure of a Type III Pantothenate Kinase: Insight Kun Yang, Yvonne Eyobo, Leisl A. 5532–5540 into the Mechanism of an Essential Coenzyme A Brand, Dariusz Martynowski, Diana Biosynthetic Enzyme Universally Distributed in Bacteria Tomchick, Erick Strauss, and Hong Zhang Crystal Structure of TDP-Fucosamine Acetyltransferase Ming-Ni Hung, Erumbi Rangarajan, 5606–5617 (WecD) from Escherichia coli, an Enzyme Required for Christine Munger, Guy Nadeau, Enterobacterial Common Antigen Synthesis Traian Sulea, and Allan Matte

GENOMICS AND PROTEOMICS Trimeric Autotransporters Require Trimerization of the Shane E. Cotter, Neeraj K. Surana, 5400–5407 Passenger Domain for Stability and Adhesive Activity Susan Grass, and Joseph W. St. Geme III Transcriptional Profile of Haemophilus influenzae: Effects of Paul W. Whitby, Timothy M. 5640–5645 Iron and Heme VanWagoner, Thomas W. Seale, Daniel J. Morton, and Terrence L. Stull

MOLECULAR BIOLOGY OF PATHOGENS Characterization of Bacillus anthracis-Like Bacteria Isolated Silke R. Klee, Muhsin O¨ zel, Bernd 5333–5344 from Wild Great Apes from Coˆte d’Ivoire and Cameroon Appel, Christophe Boesch, Heinz Ellerbrok, Daniela Jacob, Gudrun Holland, Fabian H. Leendertz, Georg Pauli, Roland Grunow, and Herbert Nattermann Lipoprotein Multigene Families in Mycoplasma pneumoniae K. M. Hallamaa, G. F. Browning, 5393–5399 and S. L. Tang Role of Histone-Like Proteins H-NS and StpA in Expression Claudia M. Mu¨ller, Ulrich Dobrindt, 5428–5438 of Virulence Determinants of Uropathogenic Escherichia coli Ga´bor Nagy, Levente Emo¨dy, Bernt Eric Uhlin, and Jo¨rg Hacker The Stringent Response Is Required for Helicobacter pylori Kyle Mouery, Bethany A. Rader, 5494–5500 Survival of Stationary Phase, Exposure to Acid, and Aerobic Erin C. Gaynor, and Karen Shock Guillemin Mutational Analysis of the Promoter Recognized by Hilda Hiu Yin Yu, Elizabeth G. Di 5524–5531 Chlamydia and Escherichia coli ␴28 RNA Polymerase Russo, Megan A. Rounds, and Ming Tan Uropathogenic Escherichia coli Strains Generally Lack M. Chelsea Lane, Amanda L. Lloyd, 5618–5625 Functional Trg and Tap Chemoreceptors Found in the Tiffany A. Markyvech, Erin C. Majority of E. coli Strains Strictly Residing in the Gut Hagan, and Harry L. T. Mobley

SIGNAL TRANSDUCTION Similarities and Differences in Interactions of the Activity- Wing-Cheung Lai, Ludmila A. 5646–5649 Enhancing Chemoreceptor Pentapeptide with the Two Barnakova, Alexander N. Barnakov, Enzymes of Adaptational Modification and Gerald L. Hazelbauer

GENE REGULATION DNA Supercoiling and the Lrp Protein Determine the Arlene Kelly, Colin Conway, Tadhg 5356–5363 Directionality of fim Switch DNA Inversion in Escherichia O´ Cro´inı´n, Stephen G. J. Smith, and coli K-12 Charles J. Dorman

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UvrD Helicase Suppresses Recombination and DNA Josephine Kang and Martin J. 5450–5459 Damage-Induced Deletions Blaser Transcription of the pst Operon of Clostridium acetobutylicum Ralf-Jo¨rg Fischer, Sonja Oehmcke, 5469–5478 Is Dependent on Phosphate Concentration and pH Uta Meyer, Maren Mix, Katrin Schwarz, Tomas Fiedler, and Hubert Bahl

MICROBIAL CELL BIOLOGY Daughter Cell Separation by Penicillin-Binding Proteins and Richa Priyadarshini, David L. 5345–5355 Peptidoglycan Amidases in Escherichia coli Popham, and Kevin D. Young Outer Membrane Vesicle Production by Escherichia coli Is Amanda J. McBroom, Alexandra P. 5385–5392 Independent of Membrane Instability Johnson, Sreekanth Vemulapalli, and Meta J. Kuehn Identification and Characterization of an Azotobacter Martin Gimmestad, Magnus 5551–5560 vinelandii Type I Secretion System Responsible for Export of Steigedal, Helga Ertesvåg, Soledad the AlgE-Type Mannuronan C-5–Epimerases Moreno, Bjørn Erik Christensen, Guadalupe Espı´n, and Svein Valla A parA Homolog Selectively Influences Positioning of the Djenann Saint-Dic, Brian P. 5626–5631 Large Chromosome Origin in Vibrio cholerae Frushour, Jason H. Kehrl, and Lyn Sue Kahng

PLANT MICROBIOLOGY Phase Variation and Genomic Architecture Changes in Ludovic Vial, Ce´line Lavire, Patrick 5364–5373 Azospirillum Mavingui, Didier Blaha, Jacqueline Haurat, Yvan Moe¨nne-Loccoz, Rene´ Bally, and Florence Wisniewski-Dye´ Diverse Flavonoids Stimulate NodD1 Binding to nod Gene Melicent C. Peck, Robert F. Fisher, 5417–5427 Promoters in Sinorhizobium meliloti and Sharon R. Long

GENETICS AND MOLECULAR BIOLOGY Addiction Toxin Fst Has Unique Effects on Chromosome S. Patel and K. E. Weaver 5374–5384 Segregation and Cell Division in Enterococcus faecalis and Bacillus subtilis YeeI, a Novel Protein Involved in Modulation of the Activity Ann-Katrin Becker, Tim 5439–5449 of the Glucose-Phosphotransferase System in Escherichia coli Zeppenfeld, Ariane Staab, Sabine K-12 Seitz, Winfried Boos, Teppei Morita, Hiroji Aiba, Kerstin Mahr, Fritz Titgemeyer, and Knut Jahreis The Bacillus subtilis Primosomal Protein DnaD Untwists Wenke Zhang, Stephanie Allen, 5487–5493 Supercoiled DNA Clive J. Roberts, and Panos Soultanas Enhanced Biofilm Formation and Loss of Capsule Mary E. Davey and Margaret J. 5510–5523 Synthesis: Deletion of a Putative Glycosyltransferase in Duncan Porphyromonas gingivalis A New D,L-Endopeptidase Gene Product, YojL (Renamed Tatsuya Fukushima, Anahita 5541–5550 CwlS), Plays a Role in Cell Separation with LytE and LytF Afkham, Shin-ichirou Kurosawa, in Bacillus subtilis Taichi Tanabe, Hiroki Yamamoto, and Junichi Sekiguchi Characterization of the Global Transcriptional Responses to Alexi I. Goranov, Elke Kuester- 5595–5605 Different Types of DNA Damage and Disruption of Schoeck, Jue D. Wang, and Alan D. Replication in Bacillus subtilis Grossman

PHYSIOLOGY AND METABOLISM Molecules Involved in the Modulation of Rapid Cell Death K. K. Raju, Satyendra Gautam, and 5408–5416 in Xanthomonas Arun Sharma

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Identification and Characterization of Bacterial Cysteine John E. Dominy, Jr, Chad R. 5561–5569 Dioxygenases: a New Route of Cysteine Degradation for Simmons, P. Andrew Karplus, Amy Eubacteria M. Gehring, and Martha H. Stipanuk The MgtC Virulence Factor of Salmonella enterica Serovar Dorothee Gu¨nzel, Lisa M. 5586–5594 ,Typhimurium Activates Na؉,K؉-ATPase Kucharski, David G. Kehres Michael F. Romero, and Michael E. Maguire Straight-Chain Fatty Acids Are Dispensable in the Helge B. Bode, Michael W. Ring, 5632–5634 Myxobacterium Myxococcus xanthus for Vegetative Growth Dale Kaiser, Anna C. David, Reiner and Fruiting Body Formation M. Kroppenstedt, and Gertrud Schwa¨r Arginine-Dependent Acid Resistance in Salmonella enterica Jasper Kieboom and Tjakko Abee 5650–5653 Serovar Typhimurium

ENZYMES AND PROTEINS Control of Acetyl-Coenzyme A Synthetase (AcsA) Activity by Jeffrey G. Gardner, Frank J. 5460–5468 Acetylation/Deacetylation without NAD؉ Involvement in Grundy, Tina M. Henkin, and Jorge Bacillus subtilis C. Escalante-Semerena The FAD-Dependent Tricarballylate Dehydrogenase (TcuA) Jeffrey A. Lewis and Jorge C. 5479–5486 Enzyme of Salmonella enterica Converts Tricarballylate into Escalante-Semerena cis-Aconitate The Plasmid RK2 Replication Initiator Protein (TrfA) Binds Kritaya Kongsuwan, Peter Josh, 5501–5509 to the Sliding Clamp ␤ Subunit of DNA Polymerase III: Marc J. Picault, Gene Wijffels, and Implication for the Toxicity of a Peptide Derived from the Brian Dalrymple Amino-Terminal Portion of 33-Kilodalton TrfA No Single Irreplaceable Acidic Residues in the Escherichia Nadejda Sigal, Shahar Molshanski- 5635–5639 coli Secondary Multidrug Transporter MdfA Mor, and Eitan Bibi

POPULATION GENETICS AND EVOLUTION Multilocus Sequence Typing as an Approach for Population Peter van Berkum, Patrick Elia, and 5570–5577 Analysis of Medicago-Nodulating Rhizobia Bertrand D. Eardly Sau1: a Novel Lineage-Specific Type I Restriction- Denise E. Waldron and Jodi A. 5578–5585 Modification System That Blocks Horizontal Gene Transfer Lindsay into Staphylococcus aureus and between S. aureus Isolates of Different Lineages

Cover photograph (Copyright © 2006, American Society for Microbiology. All Rights Reserved.): Green fluorescent protein (GFP)-expressing and red fluorescent protein (RFP)-expressing Sinorhizobium meliloti attached to root hairs of transgenic Medicago truncatula expressing GFP::talin, which marks the actin cytoskeleton. Note the deformations displayed by some of the root hairs in response to bacterial Nod factor, which is synthesized under control of the transcription activator NodD. (Image provided by Dan Gage, Department of Molecular and Cell Biology, University of Connecticut.) (See related article on page 5417.)