May 17, 2011 u vol. 108 u no. 20 u 8067–8526

Cover image: Pictured is a modern version of the Borromean rings, a topological arrange- ment of three interlocked symmetric rings that owes its name to the Borromeo family of Italy on whose coat of arms the rings appear. Although the three rings cannot be pulled apart, no two of them are linked—a fact that becomes apparent when one of the rings is hidden from view. Jim Conant, Rob Schneiderman, and Peter Teichner derived this particular realization of the link from their theory of Whitney towers, where it represents the Jacobi identity, or IHX-relation. See the article by Conant et al. on pages 8131–8138, which is part of the Special Feature on Low Dimensional Geometry and Topology. Image courtesy of Jim Conant, Rob Schneiderman, and Peter Teichner. From the Cover

8131 Borromean rings 8426 Ebola virus pathogenesis 8503 Cell surface signaling in plants 8520 Partitioning memory in the brain

Contents COMMENTARIES 8069 Pheromone emergencies and drifting moth genomes Alejandro P. Rooney THIS WEEK IN PNAS See companion article on page 7102 in issue 17 of volume 108 8071 In vitro evolution goes deep 8067 In This Issue Alan M. Moses and Alan R. Davidson See companion article on page 7896 in issue 19 of volume 108

8073 Direct involvement of leucine-rich repeats in assembling LETTERS (ONLINE ONLY) ligand-triggered receptor–coreceptor complexes Jianming Li See companion article on page 8503 E108 Information content and word frequency in natural language: Word length matters Jamie Reilly and Jacob Kean fi E109 Reply to Reilly and Kean: Clari cations on word length PERSPECTIVE and information content Steven T. Piantadosi, Harry Tily, and Edward Gibson 8075 Phantom percepts: Tinnitus and pain as persisting E110 Susceptibility of coral-disease models aversive memory networks Adan G. Jordán-Garza, Erinn M. Muller, Scott G. Burman, Dirk De Ridder, Ana Belen Elgoyhen, Ranulfo Romo, and Robert van Woesik and Berthold Langguth E112 Reply to Jordán-Garza et al.: Demographic dynamism as an additional mechanism of coral disease resistance Laith Yakob and Peter J. Mumby LOW DIMENSIONAL GEOMETRY AND TOPOLOGY E113 Further evidence for old radiations originating at the northern edge of the Australian plate SPECIAL FEATURE Paul M. Oliver INTRODUCTION 8081 Low-dimensional topology and geometry Free online through the PNAS open access option. Robion C. Kirby

PNAS u May 17, 2011 u vol. 108 u no. 20 u iii–viii Downloaded by guest on October 1, 2021 RESEARCH ARTICLES ENGINEERING 8085 Tour of bordered Floer theory 8162 Whole-Teflon microfluidic chips Robert Lipshitz, Peter S. Ozsváth, and Dylan P. Thurston Kangning Ren, Wen Dai, Jianhua Zhou, Jing Su, and Hongkai Wu 8093 Recent progress on symplectic embedding problems in four dimensions Michael Hutchings ENVIRONMENTAL SCIENCES 8167 Assessing climate change impacts on the near-term 8100 Equivalence of Heegaard Floer homology and embedded stability of the wind energy resource over the contact homology via open book decompositions United States Vincent Colin, Paolo Ghiggini, and Ko Honda S. C. Pryor and R. J. Barthelmie 8106 Fukaya categories of the torus and Dehn surgery 8172 Methane contamination of drinking water Yankı Lekili and Timothy Perutz accompanying gas-well drilling and hydraulic fracturing 8114 Symplectic homology product via Legendrian surgery Stephen G. Osborn, Avner Vengosh, Nathaniel R. Warner, Frédéric Bourgeois, Tobias Ekholm, and Yakov Eliashberg and Robert B. Jackson

8122 Fiber-connected, indefinite Morse 2-functions on GEOLOGY connected n-manifolds David T. Gay and Robion C. Kirby 8177 Slab melting versus slab dehydration in subduction-zone magmatism 8126 Topology of surface diagrams of smooth 4-manifolds Kenji Mibe, Tatsuhiko Kawamoto, Kyoko N. Matsukage, Jonathan D. Williams Yingwei Fei, and Shigeaki Ono

8131 Higher-order intersections in low-dimensional topology 8335 Persistent predator–prey dynamics revealed by Jim Conant, Rob Schneiderman, and Peter Teichner mass extinction Lauren Cole Sallan, Thomas W. Kammer, William I. Ausich, 8139 Higher categories, colimits, and the blob complex and Lewis A. Cook Scott Morrison and Kevin Walker 8339 Resetting the evolution of marine reptiles at the Triassic-Jurassic boundary Philippa M. Thorne, Marcello Ruta, and Michael J. Benton PHYSICAL SCIENCES MATHEMATICS CHEMISTRY 8085 Tour of bordered Floer theory 8146 Chemical reporters for fluorescent detection and Robert Lipshitz, Peter S. Ozsváth, and Dylan P. Thurston fi fi identi cation of O-GlcNAc-modi ed proteins reveal 8093 Recent progress on symplectic embedding problems glycosylation of the ubiquitin ligase NEDD4-1 in four dimensions Balyn W. Zaro, Yu-Ying Yang, Howard C. Hang, Michael Hutchings and Matthew R. Pratt 8100 Equivalence of Heegaard Floer homology and embedded 8152 Electron delocalization in the S1 and T1 metal-to-ligand contact homology via open book decompositions charge transfer states of trans-substituted metal Vincent Colin, Paolo Ghiggini, and Ko Honda quadruply bonded complexes Brian G. Alberding, Malcolm H. Chisholm, Judith C. Gallucci, 8106 Fukaya categories of the torus and Dehn surgery Yagnaseni Ghosh, and Terry L. Gustafson Yankı Lekili and Timothy Perutz

8157 Gold nanorods 3D-supercrystals as surface enhanced 8114 Symplectic homology product via Legendrian surgery Raman scattering spectroscopy substrates for the Frédéric Bourgeois, Tobias Ekholm, and Yakov Eliashberg rapid detection of scrambled prions Ramón A. Alvarez-Puebla, Ashish Agarwal, Pramit Manna, 8122 Fiber-connected, indefinite Morse 2-functions on Bishnu P. Khanal, Paula Aldeanueva-Potel, Enrique connected n-manifolds Carbó-Argibay, Nicolas Pazos-Pérez, Leonid Vigderman, David T. Gay and Robion C. Kirby Eugene R. Zubarev, Nicholas A. Kotov, and Luis M. Liz-Marzán 8126 Topology of surface diagrams of smooth 4-manifolds Jonathan D. Williams 8251 Acetylation of lysine 120 of p53 endows DNA-binding specificity at effective physiological salt concentration 8131 Higher-order intersections in low-dimensional topology Eyal Arbely, Eviatar Natan, Tobias Brandt, Mark D. Allen, Jim Conant, Rob Schneiderman, and Peter Teichner Dmitry B. Veprintsev, Carol V. Robinson, Jason W. Chin, 8139 Higher categories, colimits, and the blob complex Andreas C. Joerger, and Alan R. Fersht Scott Morrison and Kevin Walker

COMPUTER SCIENCES PHYSICS 8329 Whole-genome phylogeny of Escherichia coli/Shigella 8257 Quantifying the Waddington landscape and biological group by feature frequency profiles (FFPs) paths for development and differentiation Gregory E. Sims and Sung-Hou Kim Jin Wang, Kun Zhang, Li Xu, and Erkang Wang

iv u www.pnas.org Downloaded by guest on October 1, 2021 8206 Heat shock protein 90 from Escherichia coli collaborates SOCIAL SCIENCES with the DnaK chaperone system in client protein remodeling ANTHROPOLOGY Olivier Genest, Joel R. Hoskins, Jodi L. Camberg, Shannon M. Doyle, and Sue Wickner 8183 Architecture, sedentism, and social complexity at Pre-Pottery Neolithic A WF16, Southern Jordan 8212 Transcription cofactors TRIM24, TRIM28, and TRIM33 Bill Finlayson, Steven J. Mithen, Mohammad Najjar, Sam associate to form regulatory complexes that suppress  ć Smith, Darko Maricevi , Nick Pankhurst, and Lisa Yeomans murine hepatocellular carcinoma Benjamin Herquel, Khalid Ouararhni, Konstantin 8514 Synchronized arousal between performers and related Khetchoumian, Mihaela Ignat, Marius Teletin, Manuel Mark, spectators in a fire-walking ritual Guillaume Béchade, Alain Van Dorsselaer, Sarah Ivana Konvalinka, Dimitris Xygalatas, Joseph Bulbulia, Sanglier-Cianférani, Ali Hamiche, Florence Cammas, Uffe Schjødt, Else-Marie Jegindø, Sebastian Wallot, Irwin Davidson, and Régine Losson Guy Van Orden, and Andreas Roepstorff 8218 Broad disorder and the allosteric mechanism of myosin II regulation by phosphorylation PSYCHOLOGICAL AND COGNITIVE SCIENCES Bertrand Vileno, Jean Chamoun, Hua Liang, Paul Brewer, 8444 Stimulus-dependent EEG activity reflects internal Brian D. Haldeman, Kevin C. Facemyer, Bridget Salzameda, updating of tactile working memory in humans Likai Song, Hui-Chun Li, Christine R. Cremo, Bernhard Spitzer and Felix Blankenburg and Piotr G. Fajer

8224 Thyroxine is a potential endogenous antagonist of SOCIAL SCIENCES macrophage migration inhibitory factor (MIF) activity Yousef Al-Abed, Christine N. Metz, Kai Fan Cheng, Bayan ’ 8189 Role of mother s genes and environment in Aljabari, Sonya VanPatten, Steven Blau, Hans Lee, Mahendar postpartum depression Ochani, Valentin A. Pavlov, Thomas Coleman, Nathalie Colter Mitchell, Daniel Notterman, Jeanne Brooks-Gunn, Meurice, Kevin J. Tracey, and Edmund J. Miller John Hobcraft, Irwin Garfinkel, Kate Jaeger, Iulia Kotenko, and Sara McLanahan 8228 Two distinct conformations of helix 6 observed in antagonist-bound structures of a β1-adrenergic receptor Rouslan Moukhametzianov, Tony Warne, Patricia C. SUSTAINABILITY SCIENCE Edwards, Maria J. Serrano-Vega, Andrew G. W. Leslie, Christopher G. Tate, and Gebhard F. X. Schertler 8167 Assessing climate change impacts on the near-term stability of the wind energy resource over the 8233 Interaction between the RNA binding domains of United States Ser-Arg splicing factor 1 and U1-70K snRNP protein S. C. Pryor and R. J. Barthelmie determines early spliceosome assembly Suhyung Cho, Amy Hoang, Rahul Sinha, Xiang-Yang Zhong, 8311 Combining high biodiversity with high yields in Xiang-Dong Fu, Adrian R. Krainer, and Gourisankar Ghosh tropical agroforests Yann Clough, Jan Barkmann, Jana Juhrbandt, Michael 8239 Structural context for mobilization of a human tRNA Kessler, Thomas Cherico Wanger, Alam Anshary, Damayanti synthetase from its cytoplasmic complex Buchori, Daniele Cicuzza, Kevin Darras, Dadang Dwi Putra, Pengfei Fang, Hui-Min Zhang, Ryan Shapiro, Alan G. Stefan Erasmi, Ramadhanil Pitopang, Carsten Schmidt, Marshall, Paul Schimmel, Xiang-Lei Yang, and Min Guo Christian H. Schulze, Dominik Seidel, Ingolf Steffan-Dewenter, Kathrin Stenchly, Stefan Vidal, Maria 8245 The Arabidopsis thaliana Med25 mediator subunit Weist, Arno Christian Wielgoss, and Teja Tscharntke integrates environmental cues to control plant development Nils Elfving, Céline Davoine, Reyes Benlloch, Jeanette Blomberg, Kristoffer Brännström, Dörte Müller, Anders BIOLOGICAL SCIENCES Nilsson, Mikael Ulfstedt, Hans Ronne, Gunnar Wingsle, Ove Nilsson, and Stefan Björklund

APPLIED BIOLOGICAL SCIENCES BIOPHYSICS AND COMPUTATIONAL BIOLOGY 8194 Bispecific digoxigenin-binding antibodies for targeted payload delivery 8251 Acetylation of lysine 120 of p53 endows DNA-binding Silke Metz, Alexander K. Haas, Karin Daub, Rebecca specificity at effective physiological salt concentration Croasdale, Jan Stracke, Wilma Lau, Guy Georges, Hans-Peter Eyal Arbely, Eviatar Natan, Tobias Brandt, Mark D. Allen, Josel, Sebastian Dziadek, Karl-Peter Hopfner, Alfred Dmitry B. Veprintsev, Carol V. Robinson, Jason W. Chin, Lammens, Werner Scheuer, Eike Hoffmann, Andreas C. Joerger, and Alan R. Fersht Olaf Mundigl, and Ulrich Brinkmann 8257 Quantifying the Waddington landscape and biological paths for development and differentiation BIOCHEMISTRY Jin Wang, Kun Zhang, Li Xu, and Erkang Wang 8200 Feed-forward mechanism of converting biochemical 8263 Solid-state 2H NMR relaxation illuminates functional cooperativity to mitotic processes at the dynamics of retinal cofactor in membrane activation kinetochore plate of rhodopsin Jung-Eun Park, Raymond L. Erikson, and Kyung S. Lee Andrey V. Struts, Gilmar F. J. Salgado, and Michael F. Brown

PNAS u May 17, 2011 u vol. 108 u no. 20 u v Downloaded by guest on October 1, 2021 8269 Cysteine shotgun–mass spectrometry (CS-MS) reveals 8323 General rules for managing and surveying networks of dynamic sequence of protein structure changes within pests, diseases, and endangered species mutant and stressed cells Iadine Chadès, Tara G. Martin, Samuel Nicol, Mark A. Christine C. Krieger, Xiuli An, Hsin-Yao Tang, Narla Burgman, Hugh P. Possingham, and Yvonne M. Buckley Mohandas, David W. Speicher, and Dennis E. Discher

8275 Successful prediction of the intra- and extracellular loops EVOLUTION of four G-protein-coupled receptors 8329 Whole-genome phylogeny of Escherichia coli/Shigella Dahlia A. Goldfeld, Kai Zhu, Thijs Beuming, group by feature frequency profiles (FFPs) and Richard A. Friesner Gregory E. Sims and Sung-Hou Kim

8335 Persistent predator–prey dynamics revealed by CELL BIOLOGY mass extinction 8146 Chemical reporters for fluorescent detection and Lauren Cole Sallan, Thomas W. Kammer, William I. Ausich, identification of O-GlcNAc-modified proteins reveal and Lewis A. Cook glycosylation of the ubiquitin ligase NEDD4-1 Balyn W. Zaro, Yu-Ying Yang, Howard C. Hang, 8339 Resetting the evolution of marine reptiles at the and Matthew R. Pratt Triassic-Jurassic boundary Philippa M. Thorne, Marcello Ruta, and Michael J. Benton 8281 Posttranscriptional activation of gene expression in Xenopus laevis oocytes by microRNA–protein 8345 Pseudogene-derived small interference RNAs regulate complexes (microRNPs) gene expression in African Trypanosoma brucei Richard D. Mortensen, Maria Serra, Joan A. Steitz, Yan-Zi Wen, Ling-Ling Zheng, Jian-You Liao, Ming-Hui and Shobha Vasudevan Wang, Ying Wei, Xue-Min Guo, Liang-Hu Qu, Francisco J. Ayala, and Zhao-Rong Lun 8287 Regulation of angiogenesis and choroidal neovascularization by members of 8351 Molecular evidence for a single evolutionary origin of microRNA-23∼27∼24 clusters domesticated rice Qinbo Zhou, Rachel Gallagher, Rafael Ufret-Vincenty, Jeanmaire Molina, Martin Sikora, Nandita Garud, Xinyu Li, Eric N. Olson, and Shusheng Wang Jonathan M. Flowers, Samara Rubinstein, Andy Reynolds, Pu Huang, Scott Jackson, Barbara A. Schaal, Carlos D. 8293 Unrepaired clustered DNA lesions induce chromosome Bustamante, Adam R. Boyko, and Michael D. Purugganan breakage in human cells fi Aroumougame Asaithamby, Burong Hu, and David J. Chen 8357 Experimental evolution of sel sh policing in social bacteria Pauline Manhes and Gregory J. Velicer DEVELOPMENTAL BIOLOGY 8363 Fossil evidence for Cretaceous escalation in angiosperm 8299 Rapid induction and long-term self-renewal of primitive leaf vein evolution neural precursors from human embryonic stem cells by Taylor S. Feild, Timothy J. Brodribb, Ari Iglesias, David S. small molecule inhibitors Chatelet, Andres Baresch, Garland R. Upchurch, Jr., Wenlin Li, Woong Sun, Yu Zhang, Wanguo Wei, Rajesh Bernard Gomez, Barbara A. R. Mohr, Clement Ambasudhan, Peng Xia, Maria Talantova, Tongxiang Lin, Coiffard, Jiri Kvacek, and Carlos Jaramillo Janghwan Kim, Xiaolei Wang, Woon Ryoung Kim, Stuart A. Lipton, Kang Zhang, and Sheng Ding 8367 Unique system of photoreceptors in sea urchin tube feet Esther M Ullrich-Lüter, Sam Dupont, Enrique Arboleda, 8305 Caenorhabditis elegans chromatin-associated proteins Harald Hausen, and Maria Ina Arnone SET-2 and ASH-2 are differentially required for histone H3 Lys 4 methylation in embryos and adult germ cells 8373 Evolution of personality differences in leadership Yu Xiao, Cécile Bedet, Valérie J. P. Robert, Thomas Rufus A. Johnstone and Andrea Manica Simonet, Steve Dunkelbarger, Cédric Rakotomalala, Gwen Soete, Hendrik C. Korswagen, Susan Strome, 8379 Contemporaneous and recent radiations of the world’s and Francesca Palladino major succulent plant lineages Mónica Arakaki, Pascal-Antoine Christin, Reto Nyffeler, Anita Lendel, Urs Eggli, R. Matthew Ogburn, Elizabeth ECOLOGY Spriggs, Michael J. Moore, and Erika J. Edwards 8311 Combining high biodiversity with high yields in tropical agroforests Yann Clough, Jan Barkmann, Jana Juhrbandt, Michael GENETICS Kessler, Thomas Cherico Wanger, Alam Anshary, Damayanti 8189 Role of mother’s genes and environment in Buchori, Daniele Cicuzza, Kevin Darras, Dadang Dwi Putra, postpartum depression Stefan Erasmi, Ramadhanil Pitopang, Carsten Schmidt, Colter Mitchell, Daniel Notterman, Jeanne Brooks-Gunn, Christian H. Schulze, Dominik Seidel, Ingolf John Hobcraft, Irwin Garfinkel, Kate Jaeger, Steffan-Dewenter, Kathrin Stenchly, Stefan Vidal, Maria Iulia Kotenko, and Sara McLanahan Weist, Arno Christian Wielgoss, and Teja Tscharntke 8385 Autoregulation of an RNA polymerase II promoter by the 8317 Unexpected patterns of fisheries collapse in the RNA polymerase III transcription factor III C

world’s oceans (TFIIIC) complex Malin L. Pinsky, Olaf P. Jensen, Daniel Ricard, Richard A. Kleinschmidt, Kimberly E. LeBlanc, and Stephen R. Palumbi and David Donze

vi u www.pnas.org Downloaded by guest on October 1, 2021 8390 Cysteine-rich intestinal protein 2 (CRIP2) acts as NEUROSCIENCE κ – a repressor of NF- B mediated proangiogenic 8444 Stimulus-dependent EEG activity reflects internal cytokine transcription to suppress tumorigenesis updating of tactile working memory in humans and angiogenesis Bernhard Spitzer and Felix Blankenburg Arthur Kwok Leung Cheung, Josephine M. Y. Ko, Hong Lok Lung, Kwok Wah Chan, Eric J. Stanbridge, Eugene 8450 Enhanced synaptic plasticity in mice with Zabarovsky, Takashi Tokino, Lisa Kashima, Toshiharu phosphomimetic mutation of the GluA1 AMPA receptor Suzuki, Dora Lai-Wan Kwong, Daniel Chua, Yuichi Makino, Richard C. Johnson, Yilin Yu, Sai Wah Tsao, and Maria Li Lung Kogo Takamiya, and Richard L. Huganir

8456 Spine growth in the anterior cingulate cortex is IMMUNOLOGY necessary for the consolidation of contextual 8396 The dominantly expressed class I molecule of the chicken fear memory MHC is explained by coevolution with the polymorphic Gisella Vetere, Leonardo Restivo, Christina J. Cole, peptide transporter (TAP) genes P. Joel Ross, Martine Ammassari-Teule, Brian A. Walker, Lawrence G. Hunt, Anna K. Sowa, Sheena A. Josselyn, and Paul W. Frankland Karsten Skjødt, Thomas W. Göbel, Paul J. Lehner, and Jim Kaufman 8461 Overt attention toward oriented objects in free-viewing barn owls 8402 Cadherin-11 regulates fibroblast inflammation Wolf Maximilian Harmening, Julius Orlowski, Sook Kyung Chang, Erika H. Noss, Mei Chen, Zhizhan Gu, Ohad Ben-Shahar, and Hermann Wagner Kirk Townsend, Rosa Grenha, Luis Leon, Soo Young Lee, David M. Lee, and Michael B. Brenner 8467 Astroglial networks scale synaptic activity and plasticity Ulrike Pannasch, Lydia Vargová, Jürgen Reingruber, Pascal Ezan, David Holcman, Christian Giaume, MEDICAL SCIENCES Eva Syková, and Nathalie Rouach

8408 Loss of nuclear factor E2-related factor 1 in the brain 8473 Fluctuating and sensory-induced vasodynamics in rodent leads to dysregulation of proteasome gene expression cortex extend arteriole capacity and neurodegeneration Patrick J. Drew, Andy Y. Shih, and David Kleinfeld Candy S. Lee, Chiashan Lee, Terry Hu, Janice M. Nguyen, Jiasheng Zhang, Maureen V. Martin, Marquis P. Vawter, 8479 Continuous neurogenesis in the adult forebrain is Eric J. Huang, and Jefferson Y. Chan required for innate olfactory responses Masayuki Sakamoto, Itaru Imayoshi, Toshiyuki Ohtsuka, fi 8414 Targeting zebra sh and murine pituitary corticotroph Masahiro Yamaguchi, Kensaku Mori, tumors with a cyclin-dependent kinase (CDK) inhibitor and Ryoichiro Kageyama Ning-Ai Liu, Hong Jiang, Anat Ben-Shlomo, Kolja Wawrowsky, Xue-Mo Fan, Shuo Lin, and Shlomo Melmed PHARMACOLOGY 8485 TAAR1 activation modulates monoaminergic MICROBIOLOGY neurotransmission, preventing hyperdopaminergic 8420 Nitrososphaera viennensis, an ammonia oxidizing and hypoglutamatergic activity archaeon from soil Florent G. Revel, Jean-Luc Moreau, Raul R. Gainetdinov, Maria Tourna, Michaela Stieglmeier, Anja Spang, Martin Amyaouch Bradaia, Tatyana D. Sotnikova, Roland Mory, Könneke, Arno Schintlmeister, Tim Urich, Marion Engel, Sean Durkin, Katrin Groebke Zbinden, Roger Norcross, Michael Schloter, Michael Wagner, Andreas Richter, Claas A. Meyer, Veit Metzler, Sylvie Chaboz, Laurence and Christa Schleper Ozmen, Gerhard Trube, Bruno Pouzet, Bernhard Bettler, Marc G. Caron, Joseph G. Wettstein, and Marius C. Hoener 8426 T-cell immunoglobulin and mucin domain 1 (TIM-1) is a receptor for Zaire Ebolavirus and Lake 8491 Interdicting protease-activated receptor-2-driven Victoria Marburgvirus inflammation with cell-penetrating pepducins Andrew S. Kondratowicz, Nicholas J. Lennemann, Patrick L. Leila M. Sevigny, Ping Zhang, Andrew Bohm, Sinn, Robert A. Davey, Catherine L. Hunt, Sven Moller-Tank, Katherine Lazarides, George Perides, Lidija Covic, David K. Meyerholz, Paul Rennert, Robert F. Mullins, and Athan Kuliopulos Melinda Brindley, Lindsay M. Sandersfeld, Kathrina Quinn, Melodie Weller, Paul B. McCray, Jr., John Chiorini, 8497 Activity-dependent targeting of TRPV1 with and Wendy Maury a pore-permeating capsaicin analog Hui Li, Shu Wang, Alexander Y. Chuang, 8432 Influenza virus aerosol exposure and analytical system Bruce E. Cohen, and Huai-hu Chuang for ferrets Kortney M. Gustin, Jessica A. Belser, Debra A. Wadford, Melissa B. Pearce, Jacqueline M. Katz, Terrence M. Tumpey, PLANT BIOLOGY and Taronna R. Maines 8503 Extracellular leucine-rich repeats as a platform for 8438 SecB-like chaperone controls a toxin–antitoxin receptor/coreceptor complex formation stress-responsive system in Mycobacterium tuberculosis Yvon Jaillais, Youssef Belkhadir, Emilia Balsemão-Pires, Patricia Bordes, Anne-Marie Cirinesi, Roy Ummels, Ambre Jeffery L. Dangl, and Joanne Chory Sala, Samer Sakr, Wilbert Bitter, and Pierre Genevaux See Commentary on page 8073

PNAS u May 17, 2011 u vol. 108 u no. 20 u vii Downloaded by guest on October 1, 2021 8508 RNA 3′ processing functions of Arabidopsis FCA and FPA CORRECTION limit intergenic transcription Cagla Sonmez, Isabel Bäurle, Andreas Magusin, Rene Dreos, Sascha Laubinger, Detlef Weigel, and Caroline Dean BIOCHEMISTRY 8525 Structural insights into a unique cellulase fold and PSYCHOLOGICAL AND COGNITIVE SCIENCES mechanism of cellulose hydrolysis 8514 Synchronized arousal between performers and related Joana L. A. Brás, Alan Cartmell, Ana Luísa M. Carvalho, spectators in a fire-walking ritual Genny Verzé, Edward A. Bayer, Yael Vazana, Márcia A. S. Ivana Konvalinka, Dimitris Xygalatas, Joseph Bulbulia, Correia, José A. M. Prates, Supriya Ratnaparkhe, Alisdair B. Uffe Schjødt, Else-Marie Jegindø, Sebastian Wallot, Boraston, Maria J. Romão, Carlos M. G. A. Fontes, Guy Van Orden, and Andreas Roepstorff and Harry J. Gilbert 8520 Neuroanatomical dissociation for taxonomic and thematic knowledge in the human brain Myrna F. Schwartz, Daniel Y. Kimberg, Grant M. Walker, ix Subscription Form Adelyn Brecher, Olufunsho K. Faseyitan, Gary S. Dell, Daniel Mirman, and H. Branch Coslett x Classified Advertisement

viii u www.pnas.org Downloaded by guest on October 1, 2021