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THIS WEEK IN PNAS

In This Issue
PNAS 2007 104: 17557-17558. [Full Text] [PDF]  

COMMENTARIES

Andrew Whiten

Pan African culture: Memes and genes in wild chimpanzees
PNAS 2007 104: 17559-17560; published online on October 29, 2007, 10.1073/pnas.0709177104 [Extract] [Full Text] [Figures Only] [PDF]  
See companion article on page 17588

David K. Skelly

The ailing invader
PNAS 2007 104: 17561-17562; published online on October 29, 2007, 10.1073/pnas.0708869104 [Extract] [Full Text] [Figures Only] [PDF]  
See companion article on page 17698

John P. Smol

Marine sediments tell it like it was
PNAS 2007 104: 17563-17564; published online on October 29, 2007, 10.1073/pnas.0708635104 [Extract] [Full Text] [PDF]  
See companion article on page 17701

F. Stephen Dobson

A lifestyle view of life-history evolution
PNAS 2007 104: 17565-17566; published online on November 1, 2007, 10.1073/pnas.0708868104 [Extract] [Full Text] [Figures Only] [PDF]  
See companion article on page 17707

PROFILES

Kaspar Mossman

Profile of Paul Barbara
PNAS 2007 104: 17567-17569; published online on October 31, 2007, 10.1073/pnas.0709736104 [Extract] [Full Text] [Figures Only] [PDF]  

PHYSICAL SCIENCES

Applied Physical Sciences

Sarah L. Veatch, Olivier Soubias, Sarah L. Keller, and Klaus Gawrisch

Critical fluctuations in domain-forming lipid mixtures
PNAS 2007 104: 17650-17655; published online on October 25, 2007, 10.1073/pnas.0703513104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Chemistry

Anwar Ahniyaz, Yasuhiro Sakamoto, and Lennart Bergström

Magnetic field-induced assembly of oriented superlattices from maghemite nanocubes
PNAS 2007 104: 17570-17574; published online on October 31, 2007, 10.1073/pnas.0704210104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Ben-Zhan Zhu, Balaraman Kalyanaraman, and Gui-Bin Jiang

Molecular mechanism for metal-independent production of hydroxyl radicals by hydrogen peroxide and halogenated quinones
PNAS 2007 104: 17575-17578; published online on October 29, 2007, 10.1073/pnas.0704030104 [Abstract] [Full Text] [Figures Only] [PDF]  

Environmental Sciences

Celeste A. Asikainen and Sean F. Werle

Accretion of ferromanganese nodules that form pavement in Second Connecticut Lake, New Hampshire
PNAS 2007 104: 17579-17581; published online on October 31, 2007, 10.1073/pnas.0708132104 [Abstract] [Full Text] [Figures Only] [PDF]  

Physics

Daniel Schultz, Eshel Ben Jacob, José N. Onuchic, and Peter G. Wolynes

Molecular level stochastic model for competence cycles in Bacillus subtilis
PNAS 2007 104: 17582-17587; published online on October 25, 2007, 10.1073/pnas.0707965104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

SOCIAL SCIENCES

Anthropology

S. C. Erzurum, S. Ghosh, A. J. Janocha, W. Xu, S. Bauer, N. S. Bryan, J. Tejero, C. Hemann, R. Hille, D. J. Stuehr, M. Feelisch, and C. M. Beall

Higher blood flow and circulating NO products offset high-altitude hypoxia among Tibetans
PNAS 2007 104: 17593-17598; published online on October 30, 2007, 10.1073/pnas.0707462104 [Abstract] [Full Text] [Figures Only] [PDF]  

Social Sciences

Fang Wu and Bernardo A. Huberman

Novelty and collective attention
PNAS 2007 104: 17599-17601; published online on October 25, 2007, 10.1073/pnas.0704916104 [Abstract] [Full Text] [Figures Only] [PDF]  

BIOLOGICAL SCIENCES

Agricultural Sciences

Anilkumar Bettegowda, Jianbo Yao, Aritro Sen, Qinglei Li, Kyung-Bon Lee, Yasuhiro Kobayashi, Osman V. Patel, Paul M. Coussens, James J. Ireland, and George W. Smith

JY-1, an oocyte-specific gene, regulates granulosa cell function and early embryonic development in cattle
PNAS 2007 104: 17602-17607; published online on October 31, 2007, 10.1073/pnas.0706383104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Anthropology

Irene Holst, J. Enrique Moreno, and Dolores R. Piperno

Identification of teosinte, maize, and Tripsacum in Mesoamerica by using pollen, starch grains, and phytoliths
PNAS 2007 104: 17608-17613; published online on October 31, 2007, 10.1073/pnas.0708736104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  
See Commentary on page 19659

Nelson J. R. Fagundes, Nicolas Ray, Mark Beaumont, Samuel Neuenschwander, Francisco M. Salzano, Sandro L. Bonatto, and Laurent Excoffier

Statistical evaluation of alternative models of human evolution
PNAS 2007 104: 17614-17619; published online on October 31, 2007, 10.1073/pnas.0708280104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Biochemistry

Syuzo Kaneko, Chun Chu, Aaron J. Shatkin, and James L. Manley

Human capping enzyme promotes formation of transcriptional R loops in vitro
PNAS 2007 104: 17620-17625; published online on October 31, 2007, 10.1073/pnas.0708866104 [Abstract] [Full Text] [Figures Only] [PDF]  

Leonardo Curatti, Jose A. Hernandez, Robert Y. Igarashi, Basem Soboh, Dehua Zhao, and Luis M. Rubio

In vitro synthesis of the iron–molybdenum cofactor of nitrogenase from iron, sulfur, molybdenum, and homocitrate using purified proteins
PNAS 2007 104: 17626-17631; published online on October 31, 2007, 10.1073/pnas.0703050104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Daniel R. Kennedy, Jianhua Ju, Ben Shen, and Terry A. Beerman

Designer enediynes generate DNA breaks, interstrand cross-links, or both, with concomitant changes in the regulation of DNA damage responses
PNAS 2007 104: 17632-17637; published online on October 31, 2007, 10.1073/pnas.0708274104 [Abstract] [Full Text] [Figures Only] [PDF]  

Takashi Yura, Eric Guisbert, Mark Poritz, Chi Zen Lu, Elizabeth Campbell, and Carol A. Gross

Analysis of ³² mutants defective in chaperone-mediated feedback control reveals unexpected complexity of the heat shock response
PNAS 2007 104: 17638-17643; published online on October 29, 2007, 10.1073/pnas.0708819104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

José L. Llácer, Asunción Contreras, Karl Forchhammer, Clara Marco-Marín, Fernando Gil-Ortiz, Rafael Maldonado, Ignacio Fita, and Vicente Rubio

The crystal structure of the complex of P_II and acetylglutamate kinase reveals how P_II controls the storage of nitrogen as arginine
PNAS 2007 104: 17644-17649; published online on October 24, 2007, 10.1073/pnas.0705987104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Biophysics

Daniel Schultz, Eshel Ben Jacob, José N. Onuchic, and Peter G. Wolynes

Molecular level stochastic model for competence cycles in Bacillus subtilis
PNAS 2007 104: 17582-17587; published online on October 25, 2007, 10.1073/pnas.0707965104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Sarah L. Veatch, Olivier Soubias, Sarah L. Keller, and Klaus Gawrisch

Critical fluctuations in domain-forming lipid mixtures
PNAS 2007 104: 17650-17655; published online on October 25, 2007, 10.1073/pnas.0703513104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Ingemar André, Philip Bradley, Chu Wang, and David Baker

Prediction of the structure of symmetrical protein assemblies
PNAS 2007 104: 17656-17661; published online on October 31, 2007, 10.1073/pnas.0702626104 [Abstract] [Full Text] [Figures Only] [PDF]  

John R. James, Samuel S. White, Richard W. Clarke, Adam M. Johansen, Paul D. Dunne, David L. Sleep, William J. Fitzgerald, Simon J. Davis, and David Klenerman

Single-molecule level analysis of the subunit composition of the T cell receptor on live T cells
PNAS 2007 104: 17662-17667; published online on October 30, 2007, 10.1073/pnas.0700411104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Xiaozhen Hu, Huanchen Wang, Hengming Ke, and Brian Kuhlman

High-resolution design of a protein loop
PNAS 2007 104: 17668-17673; published online on October 30, 2007, 10.1073/pnas.0707977104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Alexander Schug, Paul C. Whitford, Yaakov Levy, and José N. Onuchic

Mutations as trapdoors to two competing native conformations of the Rop-dimer
PNAS 2007 104: 17674-17679; published online on October 29, 2007, 10.1073/pnas.0706077104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Hans H. Gorris, David M. Rissin, and David R. Walt

Stochastic inhibitor release and binding from single-enzyme molecules
PNAS 2007 104: 17680-17685; published online on October 26, 2007, 10.1073/pnas.0705411104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Movies]  

Cell Biology

Nicole L. Zandy, Martin Playford, and Ann Marie Pendergast

Abl tyrosine kinases regulate cell–cell adhesion through Rho GTPases
PNAS 2007 104: 17686-17691; published online on October 26, 2007, 10.1073/pnas.0703077104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figures]  

Developmental Biology

John E. Pimanda, Katrin Ottersbach, Kathy Knezevic, Sarah Kinston, Wan Y. I. Chan, Nicola K. Wilson, Josette-Renée Landry, Andrew D. Wood, Anja Kolb-Kokocinski, Anthony R. Green, David Tannahill, Georges Lacaud, Valerie Kouskoff, and Berthold Göttgens

Gata2, Fli1, and Scl form a recursively wired gene-regulatory circuit during early hematopoietic development
PNAS 2007 104: 17692-17697; published online on October 25, 2007, 10.1073/pnas.0707045104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Ecology

Environmental Sciences

Celeste A. Asikainen and Sean F. Werle

Accretion of ferromanganese nodules that form pavement in Second Connecticut Lake, New Hampshire
PNAS 2007 104: 17579-17581; published online on October 31, 2007, 10.1073/pnas.0708132104 [Abstract] [Full Text] [Figures Only] [PDF]  

Susan M. Kidwell From the Cover: Discordance between living and death assemblages as evidence for anthropogenic ecological change PNAS 2007 104: 17701-17706; published online on October 26, 2007, 10.1073/pnas.0707194104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]   See Commentary on page 17563

Evolution

Alan M. Moses, Muluye E. Liku, Joachim J. Li, and Richard Durbin Regulatory evolution in proteins by turnover and lineage-specific changes of cyclin-dependent kinase consensus sites PNAS 2007 104: 17713-17718; published online on October 31, 2007, 10.1073/pnas.0700997104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information] OPEN ACCESS ARTICLE

Genetics

F. Marchetti, J. Essers, R. Kanaar, and A. J. Wyrobek

Disruption of maternal DNA repair increases sperm-derived chromosomal aberrations
PNAS 2007 104: 17725-17729; published online on October 31, 2007, 10.1073/pnas.0705257104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figure]  

Yuzhong Cheng and Howard A. Nash

Drosophila TRP channels require a protein with a distinctive motif encoded by the inaF locus
PNAS 2007 104: 17730-17734; published online on October 29, 2007, 10.1073/pnas.0708368104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Yingying Guo, Peng Lu, Erin Farrell, Xun Zhang, Paul Weller, Mario Monshouwer, Jianmei Wang, Guochun Liao, Zhaomei Zhang, Steven Hu, John Allard, Steve Shafer, Jonathan Usuka, and Gary Peltz

In silico and in vitro pharmacogenetic analysis in mice
PNAS 2007 104: 17735-17740; published online on October 31, 2007, 10.1073/pnas.0700724104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Andrea C. Babic and John W. Little

Cooperative DNA binding by CI repressor is dispensable in a phage variant
PNAS 2007 104: 17741-17746; published online on October 25, 2007, 10.1073/pnas.0602223104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Sripriya Rajaraman, Jinkuk Choi, Peggie Cheung, Veronica Beaudry, Helen Moore, and Steven E. Artandi

Telomere uncapping in progenitor cells with critical telomere shortening is coupled to S-phase progression in vivo
PNAS 2007 104: 17747-17752; published online on October 26, 2007, 10.1073/pnas.0706485104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Immunology

Louise J. Young, Nicholas S. Wilson, Petra Schnorrer, Adele Mount, Rachel J. Lundie, Nicole L. La Gruta, Brendan S. Crabb, Gabrielle T. Belz, William R. Heath, and Jose A. Villadangos

Dendritic cell preactivation impairs MHC class II presentation of vaccines and endogenous viral antigens
PNAS 2007 104: 17753-17758; published online on October 31, 2007, 10.1073/pnas.0708622104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figure]  

Marcelo Gonzalez, Yannick Gueguen, Delphine Destoumieux-Garzón, Bernard Romestand, Julie Fievet, Martine Pugnière, Françoise Roquet, Jean-Michel Escoubas, Franck Vandenbulcke, Ofer Levy, Laure Sauné, Philippe Bulet, and Evelyne Bachère

Evidence of a bactericidal permeability increasing protein in an invertebrate, the Crassostrea gigas Cg-BPI
PNAS 2007 104: 17759-17764; published online on October 26, 2007, 10.1073/pnas.0702281104 [Abstract] [Full Text] [Figures Only] [PDF]  

Tsvetelina Pentcheva-Hoang, Lieping Chen, Drew M. Pardoll, and James P. Allison

Programmed death-1 concentration at the immunological synapse is determined by ligand affinity and availability
PNAS 2007 104: 17765-17770; published online on October 29, 2007, 10.1073/pnas.0708767104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Medical Sciences

S. C. Erzurum, S. Ghosh, A. J. Janocha, W. Xu, S. Bauer, N. S. Bryan, J. Tejero, C. Hemann, R. Hille, D. J. Stuehr, M. Feelisch, and C. M. Beall

Higher blood flow and circulating NO products offset high-altitude hypoxia among Tibetans
PNAS 2007 104: 17593-17598; published online on October 30, 2007, 10.1073/pnas.0707462104 [Abstract] [Full Text] [Figures Only] [PDF]  

Qing Xu, Pradip K. Majumder, Kenneth Ross, Yeonju Shim, Todd R. Golub, Massimo Loda, and William R. Sellers

Identification of prostate cancer modifier pathways using parental strain expression mapping
PNAS 2007 104: 17771-17776; published online on October 31, 2007, 10.1073/pnas.0708476104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Mirjam T. Epping, Liming Wang, Jane A. Plumb, Michele Lieb, Hinrich Gronemeyer, Robert Brown, and René Bernards A functional genetic screen identifies retinoic acid signaling as a target of histone deacetylase inhibitors PNAS 2007 104: 17777-17782; published online on October 29, 2007, 10.1073/pnas.0702518104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figures] OPEN ACCESS ARTICLE

Marcello Rota, Jan Kajstura, Toru Hosoda, Claudia Bearzi, Serena Vitale, Grazia Esposito, Grazia Iaffaldano, M. Elena Padin-Iruegas, Arantxa Gonzalez, Roberto Rizzi, Narissa Small, John Muraski, Roberto Alvarez, Xiongwen Chen, Konrad Urbanek, Roberto Bolli, Steven R. Houser, Annarosa Leri, Mark A. Sussman, and Piero Anversa

Bone marrow cells adopt the cardiomyogenic fate in vivo
PNAS 2007 104: 17783-17788; published online on October 26, 2007, 10.1073/pnas.0706406104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Microbiology

Purva Vats and Lawrence Rothfield

Duplication and segregation of the actin (MreB) cytoskeleton during the prokaryotic cell cycle
PNAS 2007 104: 17795-17800; published online on October 31, 2007, 10.1073/pnas.0708739104 [Abstract] [Full Text] [Figures Only] [PDF]  

Munirul Alam, Marzia Sultana, G. Balakrish Nair, A. K. Siddique, Nur A. Hasan, R. Bradley Sack, David A. Sack, K. U. Ahmed, A. Sadique, H. Watanabe, Christopher J. Grim, A. Huq, and Rita R. Colwell

Viable but nonculturable Vibrio cholerae O1 in biofilms in the aquatic environment and their role in cholera transmission
PNAS 2007 104: 17801-17806; published online on October 29, 2007, 10.1073/pnas.0705599104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Jonathan P. Zehr, Shellie R. Bench, Elizabeth A. Mondragon, Jay McCarren, and Edward F. DeLong Low genomic diversity in tropical oceanic N2-fixing cyanobacteria PNAS 2007 104: 17807-17812; published online on October 30, 2007, 10.1073/pnas.0701017104 [Abstract] [Full Text] [Figures Only] [PDF] OPEN ACCESS ARTICLE

Neuroscience

Ajit-Singh Dhaunchak and Klaus-Armin Nave

A common mechanism of PLP/DM20 misfolding causes cysteine-mediated endoplasmic reticulum retention in oligodendrocytes and Pelizaeus–Merzbacher disease
PNAS 2007 104: 17813-17818; published online on October 25, 2007, 10.1073/pnas.0704975104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Rodolfo R. Llinás, Soonwook Choi, Francisco J. Urbano, and Hee-Sup Shin -Band deficiency and abnormal thalamocortical activity in P/Q-type channel mutant mice PNAS 2007 104: 17819-17824; published online on October 29, 2007, 10.1073/pnas.0707945104 [Abstract] [Full Text] [Figures Only] [PDF] OPEN ACCESS ARTICLE   See Commentary on page 17903

Luigi Cattaneo, Maddalena Fabbri-Destro, Sonia Boria, Cinzia Pieraccini, Annalisa Monti, Giuseppe Cossu, and Giacomo Rizzolatti

Impairment of actions chains in autism and its possible role in intention understanding
PNAS 2007 104: 17825-17830; published online on October 26, 2007, 10.1073/pnas.0706273104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

David Orduz and Isabel Llano

Recurrent axon collaterals underlie facilitating synapses between cerebellar Purkinje cells
PNAS 2007 104: 17831-17836; published online on October 26, 2007, 10.1073/pnas.0707489104 [Abstract] [Full Text] [Figures Only] [PDF]  

Audrey Petit, Drew L. Sellers, Daniel J. Liebl, Marc Tessier-Lavigne, Timothy E. Kennedy, and Philip J. Horner From the Cover: Adult spinal cord progenitor cells are repelled by netrin-1 in the embryonic and injured adult spinal cord PNAS 2007 104: 17837-17842; published online on October 31, 2007, 10.1073/pnas.0703240104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]

Qi Zhang, Yu-Qing Cao, and Richard W. Tsien Quantum dots provide an optical signal specific to full collapse fusion of synaptic vesicles PNAS 2007 104: 17843-17848; published online on October 29, 2007, 10.1073/pnas.0706906104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figures] OPEN ACCESS ARTICLE

B. S. Abrahams, D. Tentler, J. V. Perederiy, M. C. Oldham, G. Coppola, and D. H. Geschwind Genome-wide analyses of human perisylvian cerebral cortical patterning PNAS 2007 104: 17849-17854; published online on October 31, 2007, 10.1073/pnas.0706128104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information] OPEN ACCESS ARTICLE

Kristin Kelly Porter, Ryan R. Metzger, and Jennifer M. Groh Visual- and saccade-related signals in the primate inferior colliculus PNAS 2007 104: 17855-17860; published online on October 31, 2007, 10.1073/pnas.0706249104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information] OPEN ACCESS ARTICLE

Panagiotis K. Politis, Georgia Makri, Dimitra Thomaidou, Markus Geissen, Hermann Rohrer, and Rebecca Matsas

BM88/CEND1 coordinates cell cycle exit and differentiation of neuronal precursors
PNAS 2007 104: 17861-17866; published online on October 30, 2007, 10.1073/pnas.0610973104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

Physiology

Gopal J. Babu, Poornima Bhupathy, Valeriy Timofeyev, Natalia N. Petrashevskaya, Peter J. Reiser, Nipavan Chiamvimonvat, and Muthu Periasamy

Ablation of sarcolipin enhances sarcoplasmic reticulum calcium transport and atrial contractility
PNAS 2007 104: 17867-17872; published online on October 30, 2007, 10.1073/pnas.0707722104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figure]  

Christopher D. Cain, Frank C. Schroeder, Stewart W. Shankel, Mark Mitchnick, Michael Schmertzler, and Neal S. Bricker

Identification of xanthurenic acid 8-O--D-glucoside and xanthurenic acid 8-O-sulfate as human natriuretic hormones
PNAS 2007 104: 17873-17878; published online on October 31, 2007, 10.1073/pnas.0705553104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Tables]  

C. T. Rubin, E. Capilla, Y. K. Luu, B. Busa, H. Crawford, D. J. Nolan, V. Mittal, C. J. Rosen, J. E. Pessin, and S. Judex Adipogenesis is inhibited by brief, daily exposure to high-frequency, extremely low-magnitude mechanical signals PNAS 2007 104: 17879-17884; published online on October 24, 2007, 10.1073/pnas.0708467104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Figures] OPEN ACCESS ARTICLE

Zoita Andronache, Daniel Ursu, Simone Lehnert, Marc Freichel, Veit Flockerzi, and Werner Melzer

The auxiliary subunit ₁ of the skeletal muscle L-type Ca²⁺ channel is an endogenous Ca²⁺ antagonist
PNAS 2007 104: 17885-17890; published online on October 31, 2007, 10.1073/pnas.0704340104 [Abstract] [Full Text] [Figures Only] [PDF]  

Population Biology

Benoît Moury, Frédéric Fabre, and Rachid Senoussi

Estimation of the number of virus particles transmitted by an insect vector
PNAS 2007 104: 17891-17896; published online on October 30, 2007, 10.1073/pnas.0702739104 [Abstract] [Full Text] [Figures Only] [PDF] [Supporting Information]  

CORRECTIONS

Correction for Schekman, The nine lives of Daniel E. Koshland, Jr. (1920–2007) [Full Text] [PDF]