Table of Contents

Biological Sciences

• Agricultural Sciences

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    Honey constituents up-regulate detoxification and immunity genes in the western honey bee Apis mellifera

    • From the Cover

    Wenfu Mao, Mary A. Schuler, and May R. Berenbaum

    PNAS May 28, 2013 110 (22) 8842-8846; https://doi.org/10.1073/pnas.1303884110

    See companion article:

    • Healing power of honey

      - May 03, 2013

• Anthropology

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    Early hominin auditory ossicles from South Africa

    Rolf M. Quam, Darryl J. de Ruiter, Melchiorre Masali, Juan-Luis Arsuaga, Ignacio Martínez, and Jacopo Moggi-Cecchi

    PNAS May 28, 2013 110 (22) 8847-8851; https://doi.org/10.1073/pnas.1303375110

• Applied Biological Sciences

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    Flow induces epithelial-mesenchymal transition, cellular heterogeneity and biomarker modulation in 3D ovarian cancer nodules

    Imran Rizvi, Umut A. Gurkan, Savas Tasoglu, Nermina Alagic, Jonathan P. Celli, Lawrence B. Mensah, Zhiming Mai, Utkan Demirci, and Tayyaba Hasan

    PNAS May 28, 2013 110 (22) E1974-E1983; https://doi.org/10.1073/pnas.1216989110
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    Specialized bat tongue is a hemodynamic nectar mop

    Cally J. Harper, Sharon M. Swartz, and Elizabeth L. Brainerd

    PNAS May 28, 2013 110 (22) 8852-8857; https://doi.org/10.1073/pnas.1222726110

• Biochemistry

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    Ribonucleolytic resection is required for repair of strand displaced nonhomologous end-joining intermediates

    Edward J. Bartlett, Nigel C. Brissett, and Aidan J. Doherty

    PNAS May 28, 2013 110 (22) E1984-E1991; https://doi.org/10.1073/pnas.1302616110
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    Nuclease activity of Saccharomyces cerevisiae Dna2 inhibits its potent DNA helicase activity

    Maryna Levikova, Daniel Klaue, Ralf Seidel, and Petr Cejka

    PNAS May 28, 2013 110 (22) E1992-E2001; https://doi.org/10.1073/pnas.1300390110
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    Distinct quaternary structures of the AAA+ Lon protease control substrate degradation

    Ellen F. Vieux, Matthew L. Wohlever, James Z. Chen, Robert T. Sauer, and Tania A. Baker

    PNAS May 28, 2013 110 (22) E2002-E2008; https://doi.org/10.1073/pnas.1307066110
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    Bacillus subtilis RNA deprotection enzyme RppH recognizes guanosine in the second position of its substrates

    • From the Cover

    Jérémie Piton, Valéry Larue, Yann Thillier, Audrey Dorléans, Olivier Pellegrini, Inés Li de la Sierra-Gallay, Jean-Jacques Vasseur, Françoise Debart, Carine Tisné, and Ciarán Condon

    PNAS May 28, 2013 110 (22) 8858-8863; https://doi.org/10.1073/pnas.1221510110

    See companion article:

    • Nucleotide specificity in bacterial mRNA recycling

      - May 13, 2013

    See companion article:

    • Specificity of B. subtilis RppH

      - Apr 22, 2013
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    Specificity of RppH-dependent RNA degradation in Bacillus subtilis

    • From the Cover

    Ping-kun Hsieh, Jamie Richards, Quansheng Liu, and Joel G. Belasco

    PNAS May 28, 2013 110 (22) 8864-8869; https://doi.org/10.1073/pnas.1222670110

    See companion article:

    • Nucleotide specificity in bacterial mRNA recycling

      - May 13, 2013

    See companion article:

    • BsRppH recognizes guanosine in position 2 of RNA

      - Apr 22, 2013
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    PRMT5 modulates the metabolic response to fasting signals

    Wen-Wei Tsai, Sherry Niessen, Naomi Goebel, John R. Yates III, Ernesto Guccione, and Marc Montminy

    PNAS May 28, 2013 110 (22) 8870-8875; https://doi.org/10.1073/pnas.1304602110
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    Trp replacements for tightly interacting Gly–Gly pairs in LacY stabilize an outward-facing conformation

    Irina Smirnova, Vladimir Kasho, Junichi Sugihara, and H. Ronald Kaback

    PNAS May 28, 2013 110 (22) 8876-8881; https://doi.org/10.1073/pnas.1306849110
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    Hypoxic and Ras-transformed cells support growth by scavenging unsaturated fatty acids from lysophospholipids

    Jurre J. Kamphorst, Justin R. Cross, Jing Fan, Elisa de Stanchina, Robin Mathew, Eileen P. White, Craig B. Thompson, and Joshua D. Rabinowitz

    PNAS May 28, 2013 110 (22) 8882-8887; https://doi.org/10.1073/pnas.1307237110
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    Role of the ubiquitin ligase E6AP/UBE3A in controlling levels of the synaptic protein Arc

    Simone Kühnle, Benedikt Mothes, Konstantin Matentzoglu, and Martin Scheffner

    PNAS May 28, 2013 110 (22) 8888-8893; https://doi.org/10.1073/pnas.1302792110
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    Interaction of 14-3-3 proteins with the Estrogen Receptor Alpha F domain provides a drug target interface

    Ingrid J. De Vries-van Leeuwen, Daniel da Costa Pereira, Koen D. Flach, Sander R. Piersma, Christian Haase, David Bier, Zeliha Yalcin, Rob Michalides, K. Anton Feenstra, Connie R. Jiménez, Tom F. A. de Greef, Luc Brunsveld, Christian Ottmann, Wilbert Zwart, and Albertus H. de Boer

    PNAS May 28, 2013 110 (22) 8894-8899; https://doi.org/10.1073/pnas.1220809110
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    End-binding proteins sensitize microtubules to the action of microtubule-targeting agents

    Renu Mohan, Eugene A. Katrukha, Harinath Doodhi, Ihor Smal, Erik Meijering, Lukas C. Kapitein, Michel O. Steinmetz, and Anna Akhmanova

    PNAS May 28, 2013 110 (22) 8900-8905; https://doi.org/10.1073/pnas.1300395110
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    Multiple actions of φ-LITX-Lw1a on ryanodine receptors reveal a functional link between scorpion DDH and ICK toxins

    Jennifer J. Smith, Irina Vetter, Richard J. Lewis, Steve Peigneur, Jan Tytgat, Alexander Lam, Esther M. Gallant, Nicole A. Beard, Paul F. Alewood, and Angela F. Dulhunty

    PNAS May 28, 2013 110 (22) 8906-8911; https://doi.org/10.1073/pnas.1214062110
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    Role of aspartate 132 at the orifice of a proton pathway in cytochrome c oxidase

    Ann-Louise Johansson, Martin Högbom, Jens Carlsson, Robert B. Gennis, and Peter Brzezinski

    PNAS May 28, 2013 110 (22) 8912-8917; https://doi.org/10.1073/pnas.1303954110

• Biophysics and Computational Biology

  • Open Access

    Nanoscale imaging reveals laterally expanding antimicrobial pores in lipid bilayers

    Paulina D. Rakowska, Haibo Jiang, Santanu Ray, Alice Pyne, Baptiste Lamarre, Matthew Carr, Peter J. Judge, Jascindra Ravi, Ulla I. M. Gerling, Beate Koksch, Glenn J. Martyna, Bart W. Hoogenboom, Anthony Watts, Jason Crain, Chris R. M. Grovenor, and Maxim G. Ryadnov

    PNAS May 28, 2013 110 (22) 8918-8923; https://doi.org/10.1073/pnas.1222824110
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    Ultrafast real-time visualization of active site flexibility of flavoenzyme thymidylate synthase ThyX

    Sergey P. Laptenok, Latifa Bouzhir-Sima, Jean-Christophe Lambry, Hannu Myllykallio, Ursula Liebl, and Marten H. Vos

    PNAS May 28, 2013 110 (22) 8924-8929; https://doi.org/10.1073/pnas.1218729110
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    Cross-validation in cryo-EM–based structural modeling

    Benjamin Falkner and Gunnar F. Schröder

    PNAS May 28, 2013 110 (22) 8930-8935; https://doi.org/10.1073/pnas.1119041110

• Cell Biology

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    Mass spectrometry-based metabolomics of single yeast cells

    Alfredo J. Ibáñez, Stephan R. Fagerer, Anna Mareike Schmidt, Pawel L. Urban, Konstantins Jefimovs, Philipp Geiger, Reinhard Dechant, Matthias Heinemann, and Renato Zenobi

    PNAS May 28, 2013 110 (22) 8790-8794; https://doi.org/10.1073/pnas.1209302110
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    STED super-resolution microscopy reveals an array of MINOS clusters along human mitochondria

    Daniel C. Jans, Christian A. Wurm, Dietmar Riedel, Dirk Wenzel, Franziska Stagge, Markus Deckers, Peter Rehling, and Stefan Jakobs

    PNAS May 28, 2013 110 (22) 8936-8941; https://doi.org/10.1073/pnas.1301820110
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    Posttranslational protein knockdown coupled to receptor tyrosine kinase activation with phosphoPROTACs

    John Hines, Jonathan D. Gough, Timothy W. Corson, and Craig M. Crews

    PNAS May 28, 2013 110 (22) 8942-8947; https://doi.org/10.1073/pnas.1217206110
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    Brief demethylation step allows the conversion of adult human skin fibroblasts into insulin-secreting cells

    Georgia Pennarossa, Sara Maffei, Marino Campagnol, Letizia Tarantini, Fulvio Gandolfi, and Tiziana A. L. Brevini

    PNAS May 28, 2013 110 (22) 8948-8953; https://doi.org/10.1073/pnas.1220637110
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    Essential role for Cdk2 inhibitory phosphorylation during replication stress revealed by a human Cdk2 knockin mutation

    Bridget T. Hughes, Julia Sidorova, Jherek Swanger, Raymond J. Monnat Jr., and Bruce E. Clurman

    PNAS May 28, 2013 110 (22) 8954-8959; https://doi.org/10.1073/pnas.1302927110
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    Transformation of polarized epithelial cells by apical mistrafficking of epiregulin

    Bhuminder Singh, Galina Bogatcheva, Mary Kay Washington, and Robert J. Coffey

    PNAS May 28, 2013 110 (22) 8960-8965; https://doi.org/10.1073/pnas.1305508110

• Developmental Biology

  • Open Access

    Dynamic CREB family activity drives segmentation and posterior polarity specification in mammalian somitogenesis

    T. Peter Lopez and Chen-Ming Fan

    PNAS May 28, 2013 110 (22) E2019-E2027; https://doi.org/10.1073/pnas.1222115110
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    Specialized stem cell niche enables repetitive renewal of alligator teeth

    Ping Wu, Xiaoshan Wu, Ting-Xin Jiang, Ruth M. Elsey, Bradley L. Temple, Stephen J. Divers, Travis C. Glenn, Kuo Yuan, Min-Huey Chen, Randall B. Widelitz, and Cheng-Ming Chuong

    PNAS May 28, 2013 110 (22) E2009-E2018; https://doi.org/10.1073/pnas.1213202110
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    Notch2 regulates BMP signaling and epithelial morphogenesis in the ciliary body of the mouse eye

    Yi Zhou, Christopher Tanzie, Zhipeng Yan, Shuyi Chen, Michael Duncan, Karin Gaudenz, Hua Li, Christopher Seidel, Brandy Lewis, Andrea Moran, Richard T. Libby, Amy E. Kiernan, and Ting Xie

    PNAS May 28, 2013 110 (22) 8966-8971; https://doi.org/10.1073/pnas.1218145110

• Ecology

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    Millennial-scale isotope records from a wide-ranging predator show evidence of recent human impact to oceanic food webs

    Anne E. Wiley, Peggy H. Ostrom, Andreanna J. Welch, Robert C. Fleischer, Hasand Gandhi, John R. Southon, Thomas W. Stafford Jr., Jay F. Penniman, Darcy Hu, Fern P. Duvall, and Helen F. James

    PNAS May 28, 2013 110 (22) 8972-8977; https://doi.org/10.1073/pnas.1300213110
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    Benefit of pulsation in soft corals

    • From the Cover

    Maya Kremien, Uri Shavit, Tali Mass, and Amatzia Genin

    PNAS May 28, 2013 110 (22) 8978-8983; https://doi.org/10.1073/pnas.1301826110

    See companion article:

    • Why do some soft corals pulsate?

      - May 13, 2013
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    Significance of activity peaks in fruit flies, Drosophila melanogaster, under seminatural conditions

    Joydeep De, Vishwanath Varma, Soham Saha, Vasu Sheeba, and Vijay Kumar Sharma

    PNAS May 28, 2013 110 (22) 8984-8989; https://doi.org/10.1073/pnas.1220960110
  • Open Access

    Functional ecology of an Antarctic Dry Valley

    Yuki Chan, Joy D. Van Nostrand, Jizhong Zhou, Stephen B. Pointing, and Roberta L. Farrell

    PNAS May 28, 2013 110 (22) 8990-8995; https://doi.org/10.1073/pnas.1300643110
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    Experimental evidence that evolutionarily diverse assemblages result in higher productivity

    Marc W. Cadotte

    PNAS May 28, 2013 110 (22) 8996-9000; https://doi.org/10.1073/pnas.1301685110

• Evolution

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    Molecular evolution of peptidergic signaling systems in bilaterians

    Olivier Mirabeau and Jean-Stéphane Joly

    PNAS May 28, 2013 110 (22) E2028-E2037; https://doi.org/10.1073/pnas.1219956110
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    Human frontal lobes are not relatively large

    Robert A. Barton and Chris Venditti

    PNAS May 28, 2013 110 (22) 9001-9006; https://doi.org/10.1073/pnas.1215723110

    See companion article:

    • Human frontal lobe size

      - Sep 12, 2013
  • Open Access

    Experimental interrogation of the path dependence and stochasticity of protein evolution using phage-assisted continuous evolution

    Bryan C. Dickinson, Aaron M. Leconte, Benjamin Allen, Kevin M. Esvelt, and David R. Liu

    PNAS May 28, 2013 110 (22) 9007-9012; https://doi.org/10.1073/pnas.1220670110

• Genetics

  • Open Access

    Direct interaction between the TnsA and TnsB subunits controls the heteromeric Tn7 transposase

    Ki Young Choi, Ying Li, Robert Sarnovsky, and Nancy L. Craig

    PNAS May 28, 2013 110 (22) E2038-E2045; https://doi.org/10.1073/pnas.1305716110
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    Using natural variation in Drosophila to discover previously unknown endoplasmic reticulum stress genes

    Clement Y. Chow, Mariana F. Wolfner, and Andrew G. Clark

    PNAS May 28, 2013 110 (22) 9013-9018; https://doi.org/10.1073/pnas.1307125110

• Immunology

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    Comprehensive analysis of dengue virus-specific responses supports an HLA-linked protective role for CD8⁺ T cells

    • From the Cover

    Daniela Weiskopf, Michael A. Angelo, Elzinandes L. de Azeredo, John Sidney, Jason A. Greenbaum, Anira N. Fernando, Anne Broadwater, Ravi V. Kolla, Aruna D. De Silva, Aravinda M. de Silva, Kimberly A. Mattia, Benjamin J. Doranz, Howard M. Grey, Sujan Shresta, Bjoern Peters, and Alessandro Sette

    PNAS May 28, 2013 110 (22) E2046-E2053; https://doi.org/10.1073/pnas.1305227110

    See companion article:

    • Original antigenic sin in dengue revisited

      - May 16, 2013
  • Open Access

    Vaccine-induced plasma IgA specific for the C1 region of the HIV-1 envelope blocks binding and effector function of IgG

    Georgia D. Tomaras, Guido Ferrari, Xiaoying Shen, S. Munir Alam, Hua-Xin Liao, Justin Pollara, Mattia Bonsignori, M. Anthony Moody, Youyi Fong, Xi Chen, Brigid Poling, Cindo O. Nicholson, Ruijun Zhang, Xiaozhi Lu, Robert Parks, Jaranit Kaewkungwal, Sorachai Nitayaphan, Punnee Pitisuttithum, Supachai Rerks-Ngarm, Peter B. Gilbert, Jerome H. Kim, Nelson L. Michael, David C. Montefiori, and Barton F. Haynes

    PNAS May 28, 2013 110 (22) 9019-9024; https://doi.org/10.1073/pnas.1301456110

• Medical Sciences

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    Mannodendrimers prevent acute lung inflammation by inhibiting neutrophil recruitment

    Emilyne Blattes, Alain Vercellone, Hélène Eutamène, Cédric-Olivier Turrin, Vassilia Théodorou, Jean-Pierre Majoral, Anne-Marie Caminade, Jacques Prandi, Jérôme Nigou, and Germain Puzo

    PNAS May 28, 2013 110 (22) 8795-8800; https://doi.org/10.1073/pnas.1221708110
  • Open Access

    Dynamic dual-tracer MRI-guided fluorescence tomography to quantify receptor density in vivo

    Scott C. Davis, Kimberley S. Samkoe, Kenneth M. Tichauer, Kristian J. Sexton, Jason R. Gunn, Sophie J. Deharvengt, Tayyaba Hasan, and Brian W. Pogue

    PNAS May 28, 2013 110 (22) 9025-9030; https://doi.org/10.1073/pnas.1213490110
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    Concordant mast cell and basophil production by individual hematopoietic blast colony-forming cells

    Donald Metcalf, Ashley P. Ng, Tracey M. Baldwin, Ladina Di Rago, and Sandra Mifsud

    PNAS May 28, 2013 110 (22) 9031-9035; https://doi.org/10.1073/pnas.1307711110
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    Dynamic vaccine blocks relapse to compulsive intake of heroin

    Joel E. Schlosburg, Leandro F. Vendruscolo, Paul T. Bremer, Jonathan W. Lockner, Carrie L. Wade, Ashlee A. K. Nunes, G. Neil Stowe, Scott Edwards, Kim D. Janda, and George F. Koob

    PNAS May 28, 2013 110 (22) 9036-9041; https://doi.org/10.1073/pnas.1219159110
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    PI3Kα activates integrin α4β1 to establish a metastatic niche in lymph nodes

    Barbara Garmy-Susini, Christie J. Avraamides, Jay S. Desgrosellier, Michael C. Schmid, Philippe Foubert, Lesley G. Ellies, Andrew M. Lowy, Sarah L. Blair, Scott R. Vandenberg, Brian Datnow, Huan-You Wang, David A. Cheresh, and Judith Varner

    PNAS May 28, 2013 110 (22) 9042-9047; https://doi.org/10.1073/pnas.1219603110

• Microbiology

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    Visualization of pinholin lesions in vivo

    Ting Pang, Tinya C. Fleming, Kit Pogliano, and Ry Young

    PNAS May 28, 2013 110 (22) E2054-E2063; https://doi.org/10.1073/pnas.1222283110
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    Bunyamwera virus possesses a distinct nucleocapsid protein to facilitate genome encapsidation

    • From the Cover

    Baobin Li, Quan Wang, Xijiang Pan, Isabel Fernández de Castro, Yuna Sun, Yu Guo, Xinwei Tao, Cristina Risco, Sen-Fang Sui, and Zhiyong Lou

    PNAS May 28, 2013 110 (22) 9048-9053; https://doi.org/10.1073/pnas.1222552110

    See companion article:

    • Leanyer orthobunyavirus nucleoprotein–RNA complex

      - Apr 08, 2013

    See companion article:

    • Orthobunyavirus nucleoproteins

      - May 21, 2013
  • You have access

    Structure of the Leanyer orthobunyavirus nucleoprotein–RNA complex reveals unique architecture for RNA encapsidation

    • From the Cover

    Fengfeng Niu, Neil Shaw, Yao E. Wang, Lianying Jiao, Wei Ding, Xiaomin Li, Ping Zhu, Halmurat Upur, Songying Ouyang, Genhong Cheng, and Zhi-Jie Liu

    PNAS May 28, 2013 110 (22) 9054-9059; https://doi.org/10.1073/pnas.1300035110

    See companion article:

    • Orthobunyavirus nucleoproteins

      - May 21, 2013

    See companion article:

    • Crystal structure of BUNV NP–RNA complex

      - Apr 08, 2013
  • You have access

    Dynamic FtsA and FtsZ localization and outer membrane alterations during polar growth and cell division in Agrobacterium tumefaciens

    John R. Zupan, Todd A. Cameron, James Anderson-Furgeson, and Patricia C. Zambryski

    PNAS May 28, 2013 110 (22) 9060-9065; https://doi.org/10.1073/pnas.1307241110
  • Open Access

    Cross-talk between Akkermansia muciniphila and intestinal epithelium controls diet-induced obesity

    Amandine Everard, Clara Belzer, Lucie Geurts, Janneke P. Ouwerkerk, Céline Druart, Laure B. Bindels, Yves Guiot, Muriel Derrien, Giulio G. Muccioli, Nathalie M. Delzenne, Willem M. de Vos, and Patrice D. Cani

    PNAS May 28, 2013 110 (22) 9066-9071; https://doi.org/10.1073/pnas.1219451110
  • Open Access

    Host and viral features of human dengue cases shape the population of infected and infectious Aedes aegypti mosquitoes

    Nguyet Minh Nguyen, Duong Thi Hue Kien, Trung Vu Tuan, Nguyen Than Ha Quyen, Chau N. B. Tran, Long Vo Thi, Dui Le Thi, Hoa Lan Nguyen, Jeremy J. Farrar, Edward C. Holmes, Maia A. Rabaa, Juliet E. Bryant, Truong Thanh Nguyen, Huong Thi Cam Nguyen, Lan Thi Hong Nguyen, Mai Phuong Pham, Hung The Nguyen, Tai Thi Hue Luong, Bridget Wills, Chau Van Vinh Nguyen, Marcel Wolbers, and Cameron P. Simmons

    PNAS May 28, 2013 110 (22) 9072-9077; https://doi.org/10.1073/pnas.1303395110
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    Murine leukemia virus glycosylated Gag blocks apolipoprotein B editing complex 3 and cytosolic sensor access to the reverse transcription complex

    Spyridon Stavrou, Takayuki Nitta, Swathi Kotla, Dat Ha, Kunio Nagashima, Alan R. Rein, Hung Fan, and Susan R. Ross

    PNAS May 28, 2013 110 (22) 9078-9083; https://doi.org/10.1073/pnas.1217399110
  • Open Access

    Systematic identification of conserved bacterial c-di-AMP receptor proteins

    Rebecca M. Corrigan, Ivan Campeotto, Tharshika Jeganathan, Kevin G. Roelofs, Vincent T. Lee, and Angelika Gründling

    PNAS May 28, 2013 110 (22) 9084-9089; https://doi.org/10.1073/pnas.1300595110
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    In vivo imaging of CD8⁺ T cell-mediated elimination of malaria liver stages

    Ian A. Cockburn, Rogerio Amino, Reka K. Kelemen, Scot C. Kuo, Sze-Wah Tse, Andrea Radtke, Laura Mac-Daniel, Vitaly V. Ganusov, Fidel Zavala, and Robert Ménard

    PNAS May 28, 2013 110 (22) 9090-9095; https://doi.org/10.1073/pnas.1303858110
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    CD134 is a cellular receptor specific for human herpesvirus-6B entry

    Huamin Tang, Satoshi Serada, Akiko Kawabata, Megumi Ota, Emi Hayashi, Tetsuji Naka, Koichi Yamanishi, and Yasuko Mori

    PNAS May 28, 2013 110 (22) 9096-9099; https://doi.org/10.1073/pnas.1305187110

• Neuroscience

  • Open Access

    Distinct preplay of multiple novel spatial experiences in the rat

    George Dragoi and Susumu Tonegawa

    PNAS May 28, 2013 110 (22) 9100-9105; https://doi.org/10.1073/pnas.1306031110
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    Molecular layer perforant path-associated cells contribute to feed-forward inhibition in the adult dentate gyrus

    Yan Li, Floor J. Stam, James B. Aimone, Martyn Goulding, Edward M. Callaway, and Fred H. Gage

    PNAS May 28, 2013 110 (22) 9106-9111; https://doi.org/10.1073/pnas.1306912110
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    Impaired learning resulting from Respiratory Syncytial Virus infection

    Janyra A. Espinoza, Karen Bohmwald, Pablo F. Céspedes, Roberto S. Gómez, Sebastián A. Riquelme, Claudia M. Cortés, Javier A. Valenzuela, Rodrigo A. Sandoval, Floria C. Pancetti, Susan M. Bueno, Claudia A. Riedel, and Alexis M. Kalergis

    PNAS May 28, 2013 110 (22) 9112-9117; https://doi.org/10.1073/pnas.1217508110
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    Palmitoylation-dependent CDKL5–PSD-95 interaction regulates synaptic targeting of CDKL5 and dendritic spine development

    Yong-Chuan Zhu, Dan Li, Lu Wang, Bin Lu, Jing Zheng, Shi-Lin Zhao, Rong Zeng, and Zhi-Qi Xiong

    PNAS May 28, 2013 110 (22) 9118-9123; https://doi.org/10.1073/pnas.1300003110
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    Reinstatement of nicotine seeking is mediated by glutamatergic plasticity

    Cassandra D. Gipson, Kathryn J. Reissner, Yonatan M. Kupchik, Alexander C. W. Smith, Neringa Stankeviciute, Megan E. Hensley-Simon, and Peter W. Kalivas

    PNAS May 28, 2013 110 (22) 9124-9129; https://doi.org/10.1073/pnas.1220591110
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    Perineuronal nets protect fast-spiking interneurons against oxidative stress

    Jan-Harry Cabungcal, Pascal Steullet, Hirofumi Morishita, Rudolf Kraftsik, Michel Cuenod, Takao K. Hensch, and Kim Q. Do

    PNAS May 28, 2013 110 (22) 9130-9135; https://doi.org/10.1073/pnas.1300454110
  • Open Access

    A unified selection signal for attention and reward in primary visual cortex

    Liviu Stănişor, Chris van der Togt, Cyriel M. A. Pennartz, and Pieter R. Roelfsema

    PNAS May 28, 2013 110 (22) 9136-9141; https://doi.org/10.1073/pnas.1300117110
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    Rapid feedback regulation of synaptic efficacy during high-frequency activity at the Drosophila larval neuromuscular junction

    Grant Kauwe and Ehud Y. Isacoff

    PNAS May 28, 2013 110 (22) 9142-9147; https://doi.org/10.1073/pnas.1221314110
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    Mutant presenilin 1 expression in excitatory neurons impairs enrichment-mediated phenotypes of adult hippocampal progenitor cells

    Karthikeyan Veeraraghavalu and Sangram S. Sisodia

    PNAS May 28, 2013 110 (22) 9148-9153; https://doi.org/10.1073/pnas.1302106110

• Physiology

  • Open Access

    Coupled Ca²⁺/H⁺ transport by cytoplasmic buffers regulates local Ca²⁺ and H⁺ ion signaling

    Pawel Swietach, Jae-Boum Youm, Noriko Saegusa, Chae-Hun Leem, Kenneth W. Spitzer, and Richard D. Vaughan-Jones

    PNAS May 28, 2013 110 (22) E2064-E2073; https://doi.org/10.1073/pnas.1222433110
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    Calcium signaling mediates cold sensing in insect tissues

    Nicholas M. Teets, Shu-Xia Yi, Richard E. Lee Jr., and David L. Denlinger

    PNAS May 28, 2013 110 (22) 9154-9159; https://doi.org/10.1073/pnas.1306705110
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    Huntington disease skeletal muscle is hyperexcitable owing to chloride and potassium channel dysfunction

    Christopher W. Waters, Grigor Varuzhanyan, Robert J. Talmadge, and Andrew A. Voss

    PNAS May 28, 2013 110 (22) 9160-9165; https://doi.org/10.1073/pnas.1220068110

• Plant Biology

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    LYM2-dependent chitin perception limits molecular flux via plasmodesmata

    Christine Faulkner, Elena Petutschnig, Yoselin Benitez-Alfonso, Martina Beck, Silke Robatzek, Volker Lipka, and Andrew J. Maule

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