[PNAS]
[Chemistry Recruiting](/cgi/adclick/?ad=54633&adclick=true&url=https%3A%2F%2Fwww.pnas.org%2Fpage%2Fabout%2Fchemistry-call-for-papers%3Futm_source%3DPNAS%26utm_medium%3DeTOC%26utm_campaign%3Dchemistryrecruiting%26utm_content%3DChemistryCFP)
 [January 21, 2020; Vol. 117, No. 3](
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This Week in PNAS
[In This Issue](
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Inner Workings
[Inner Workings: A massive star dies without a bang, revealing the sensitive nature of supernovae](
Ken Croswell
An over-the-shoulder look at scientists at work.
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QnAs
[QnAs with Sangeeta N. Bhatia](
Prashant Nair
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Profile
[Profile of Mary Lou Guerinot](
Jennifer Viegas
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Commentaries
[Chronic well leakage probability relative to basin and fluid characteristics](
Preston Jordan
[The Australasian tektite source crater: Found at last?](
H. J. Melosh
[Linking calcium signaling and mitochondrial function in fungal drug resistance](
Paul Bowyer, Michael J. Bromley, and David W. Denning
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Letters
[Further wet-taro evidence from Polynesia’s southernmost Neolithic production margins](
Ian G. Barber
[Reply to Barber: Marginal evidence for taro production in northern New Zealand between 1200 and 1500 CE](
Matthew Prebble, Atholl J. Anderson, Paul Augustinus, Joshua Emmitt, Stewart J. Fallon, Louise L. Furey, Simon J. Holdaway, Alex Jorgensen, Thegn N. Ladefoged, Peter J. Matthews, Jean-Yves Meyer, Rebecca Phillipps, Rod Wallace, and Nicholas Porch
[Making inferences about racial disparities in police violence](
Dean Knox and Jonathan Mummolo
[Young unarmed nonsuicidal male victims of fatal use of force are 13 times more likely to be Black than White](
Ulrich Schimmack and Rickard Carlsson
[Reply to Knox and Mummolo and Schimmack and Carlsson: Controlling for crime and population rates](
David J. Johnson and Joseph Cesario
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Brief Reports
[Scientists’ incentives and attitudes toward public communication](
Kathleen M. Rose, Ezra M. Markowitz, and Dominique Brossard
[Evidence of tool use in a seabird](
Annette L. Fayet, Erpur Snær Hansen, and Dora Biro
[Host protein glycosylation in nucleic acid vaccines as a potential hurdle in vaccine design for nonviral pathogens](
Ahmet Ozdilek, Amy V. Paschall, Michelle Dookwah, Michael Tiemeyer, and Fikri Y. Avci
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Physical Sciences
Applied Physical Sciences
[Intermediate states of molecular self-assembly from liquid-cell electron microscopy](
Huan Wang, Bo Li, Ye-Jin Kim, Oh-Hoon Kwon, and Steve Granick
[Short solvent model for ion correlations and hydrophobic association](
Ang Gao, Richard C. Remsing, and John D. Weeks
Biophysics and Computational Biology
[Biophysical principles of choanoflagellate self-organization](
Ben T. Larson, Teresa Ruiz-Herrero, Stacey Lee, Sanjay Kumar, L. Mahadevan, and Nicole King
[Braiding topology and the energy landscape of chromosome organization proteins](
Dana Krepel, Aram Davtyan, Nicholas P. Schafer, Peter G. Wolynes, and José N. Onuchic
[Structures of cofilin-induced structural changes reveal local and asymmetric perturbations of actin filaments](
Andrew R. Huehn, Jeffrey P. Bibeau, Anthony C. Schramm, Wenxiang Cao, Enrique M. De La Cruz, and Charles V. Sindelar
[Cotranslational folding allows misfolding-prone proteins to circumvent deep kinetic traps](
Amir Bitran, William M. Jacobs, Xiadi Zhai, and Eugene Shakhnovich
[A compartment size-dependent selective threshold limits mutation accumulation in hierarchical tissues](
Dániel Grajzel, Imre Derényi, and Gergely J. Szöllősi
Chemistry
[The effector mechanism of siRNA spherical nucleic acids](
Gokay Yamankurt, Robert J. Stawicki, Diana M. Posadas, Joseph Q. Nguyen, Richard W. Carthew, and Chad A. Mirkin
[An anticancer gold(III)-activated porphyrin scaffold that covalently modifies protein cysteine thiols](
Ka-Chung Tong, Chun-Nam Lok, Pui-Ki Wan, Di Hu, Yi Man Eva Fung, Xiao-Yong Chang, Song Huang, Haibo Jiang, and Chi-Ming Che
[Highly efficient binary copper−iron catalyst for photoelectrochemical carbon dioxide reduction toward methane](
Baowen Zhou, Pengfei Ou, Nick Pant, Shaobo Cheng, Srinivas Vanka, Sheng Chu, Roksana Tonny Rashid, Gianluigi Botton, Jun Song, and Zetian Mi
[A unified machine-learning protocol for asymmetric catalysis as a proof of concept demonstration using asymmetric hydrogenation](
Sukriti Singh, Monika Pareek, Avtar Changotra, Sayan Banerjee, Bangaru Bhaskararao, P. Balamurugan, and Raghavan B. Sunoj
[Designing cyclic competence-stimulating peptide (CSP) analogs with pan-group quorum-sensing inhibition activity in Streptococcus pneumoniae](
Yifang Yang, Jingjun Lin, Anthony Harrington, Gabriel Cornilescu, Gee W. Lau, and Yftah Tal-Gan
Earth, Atmospheric, and Planetary Sciences
[The role of saltwater and waves in continental shelf formation with seaward migrating clinoform](
Toshiki Iwasaki and Gary Parker
[Australasian impact crater buried under the Bolaven volcanic field, Southern Laos](
Kerry Sieh, Jason Herrin, Brian Jicha, Dayana Schonwalder Angel, James D. P. Moore, Paramesh Banerjee, Weerachat Wiwegwin, Vanpheng Sihavong, Brad Singer, Tawachai Chualaowanich, and Punya Charusiri
[Fast oxidation of sulfur dioxide by hydrogen peroxide in deliquesced aerosol particles](
Tengyu Liu, Simon L. Clegg, and Jonathan P. D. Abbatt
[Oxidized micrometeorites suggest either high pCO2 or low pN2 during the Neoarchean](
Rebecca C. Payne, Don Brownlee, and James F. Kasting
[Geographically divergent evolutionary and ecological legacies shape mammal biodiversity in the global tropics and subtropics](
John Rowan, Lydia Beaudrot, Janet Franklin, Kaye E. Reed, Irene E. Smail, Andrew Zamora, and Jason M. Kamilar
Engineering
[Bioinspired sonar reflectors as guiding beacons for autonomous navigation](
Ralph Simon, Stefan Rupitsch, Markus Baumann, Huan Wu, Herbert Peremans, and Jan Steckel
[Infrared optical and thermal properties of microstructures in butterfly wings](
Anirudh Krishna, Xiao Nie, Andrew D. Warren, Jorge E. Llorente-Bousquets, Adriana D. Briscoe, and Jaeho Lee
Environmental Sciences
[Channelization cascade in landscape evolution](
Sara Bonetti, Milad Hooshyar, Carlo Camporeale, and Amilcare Porporato
[High productivity in hybrid-poplar plantations without isoprene emission to the atmosphere](
Russell K. Monson, Barbro Winkler, Todd N. Rosenstiel, Katja Block, Juliane Merl-Pham, Steven H. Strauss, Kori Ault, Jason Maxfield, David J. P. Moore, Nicole A. Trahan, Amberly A. Neice, Ian Shiach, Greg A. Barron-Gafford, Peter Ibsen, Joel T. McCorkel, Jörg Bernhardt, and Joerg-Peter Schnitzler
Physics
[Optimizing Brownian escape rates by potential shaping](
Marie Chupeau, Jannes Gladrow, Alexei Chepelianskii, Ulrich F. Keyser, and Emmanuel Trizac
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Social Sciences
Social Sciences
[A randomized trial of a lab-embedded discourse intervention to improve research ethics](
Dena K. Plemmons, Erica N. Baranski, Kyle Harp, David D. Lo, Courtney K. Soderberg, Timothy M. Errington, Brian A. Nosek, and Kevin M. Esterling
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Biological Sciences
Applied Biological Sciences
[Bioinspired sonar reflectors as guiding beacons for autonomous navigation](
Ralph Simon, Stefan Rupitsch, Markus Baumann, Huan Wu, Herbert Peremans, and Jan Steckel
[Retroconversion of estrogens into androgens by bacteria via a cobalamin-mediated methylation](
Po-Hsiang Wang, Yi-Lung Chen, Sean Ting-Shyang Wei, Kan Wu, Tzong-Huei Lee, Tien-Yu Wu, and Yin-Ru Chiang
[Bioderivatization as a concept for renewable production of chemicals that are toxic or poorly soluble in the liquid phase](
Pachara Sattayawat, Ian Sofian Yunus, and Patrik R. Jones
Biochemistry
[The effector mechanism of siRNA spherical nucleic acids](
Gokay Yamankurt, Robert J. Stawicki, Diana M. Posadas, Joseph Q. Nguyen, Richard W. Carthew, and Chad A. Mirkin
[Activation by substoichiometric inhibition](
Melisa Merdanovic, Steven G. Burston, Anna Laura Schmitz, Steffen Köcher, Stefan Knapp, Tim Clausen, Markus Kaiser, Robert Huber, and Michael Ehrmann
[A de novo peroxidase is also a promiscuous yet stereoselective carbene transferase](
Richard Stenner, Jack W. Steventon, Annela Seddon, and J. L. Ross Anderson
[Long-range interdomain communications in eIF5B regulate GTP hydrolysis and translation initiation](
Bridget Y. Huang and Israel S. Fernández
[Cryo-EM analysis of a feline coronavirus spike protein reveals a unique structure and camouflaging glycans](
Tzu-Jing Yang, Yen-Chen Chang, Tzu-Ping Ko, Piotr Draczkowski, Yu-Chun Chien, Yuan-Chih Chang, Kuen-Phon Wu, Kay-Hooi Khoo, Hui-Wen Chang, and Shang-Te Danny Hsu
[Rotary catalysis of bovine mitochondrial F1-ATPase studied by single-molecule experiments](
Ryohei Kobayashi, Hiroshi Ueno, Chun-Biu Li, and Hiroyuki Noji
[Translation of the intrinsically disordered protein α-synuclein is inhibited by a small molecule targeting its structured mRNA](
Peiyuan Zhang, Hye-Jin Park, Jie Zhang, Eunsung Junn, Ryan J. Andrews, Sai Pradeep Velagapudi, Daniel Abegg, Kamalakannan Vishnu, Matthew G. Costales, Jessica L. Childs-Disney, Alexander Adibekian, Walter N. Moss, M. Maral Mouradian, and Matthew D. Disney
Biophysics and Computational Biology
[Intermediate states of molecular self-assembly from liquid-cell electron microscopy](
Huan Wang, Bo Li, Ye-Jin Kim, Oh-Hoon Kwon, and Steve Granick
[Braiding topology and the energy landscape of chromosome organization proteins](
Dana Krepel, Aram Davtyan, Nicholas P. Schafer, Peter G. Wolynes, and José N. Onuchic
[Structures of cofilin-induced structural changes reveal local and asymmetric perturbations of actin filaments](
Andrew R. Huehn, Jeffrey P. Bibeau, Anthony C. Schramm, Wenxiang Cao, Enrique M. De La Cruz, and Charles V. Sindelar
[Cotranslational folding allows misfolding-prone proteins to circumvent deep kinetic traps](
Amir Bitran, William M. Jacobs, Xiadi Zhai, and Eugene Shakhnovich
[Improved protein structure prediction using predicted interresidue orientations](
Jianyi Yang, Ivan Anishchenko, Hahnbeom Park, Zhenling Peng, Sergey Ovchinnikov, and David Baker
[Molecular mechanism of the chitinolytic peroxygenase reaction](
Bastien Bissaro, Bennett Streit, Ingvild Isaksen, Vincent G. H. Eijsink, Gregg T. Beckham, Jennifer L. DuBois, and Åsmund K. Røhr
Cell Biology
[A cell atlas of the adult Drosophila midgut](
Ruei-Jiun Hung, Yanhui Hu, Rory Kirchner, Yifang Liu, Chiwei Xu, Aram Comjean, Sudhir Gopal Tattikota, Fangge Li, Wei Song, Shannan Ho Sui, and Norbert Perrimon
[Loss of TSC complex enhances gluconeogenesis via upregulation of Dlk1-Dio3 locus miRNAs](
Dritan Liko, Andrzej Rzepiela, Vanja Vukojevic, Mihaela Zavolan, and Michael N. Hall
[Quantitative microscopy reveals dynamics and fate of clustered IRE1α](
Vladislav Belyy, Ngoc-Han Tran, and Peter Walter
[The clock gene Bmal1 inhibits macrophage motility, phagocytosis, and impairs defense against pneumonia](
Gareth B. Kitchen, Peter S. Cunningham, Toryn M. Poolman, Mudassar Iqbal, Robert Maidstone, Matthew Baxter, James Bagnall, Nicola Begley, Ben Saer, Tracy Hussell, Laura C. Matthews, David H. Dockrell, Hannah J. Durrington, Julie E. Gibbs, John F. Blaikley, Andrew S. Loudon, and David W. Ray
Developmental Biology
[Global shape of Toll activation is determined by wntD enhancer properties](
Neta Rahimi, Shari Carmon, Inna Averbukh, Farzaneh Khajouei, Saurabh Sinha, Eyal D. Schejter, Naama Barkai, and Ben-Zion Shilo
Ecology
[Geographically divergent evolutionary and ecological legacies shape mammal biodiversity in the global tropics and subtropics](
John Rowan, Lydia Beaudrot, Janet Franklin, Kaye E. Reed, Irene E. Smail, Andrew Zamora, and Jason M. Kamilar
[Infrared optical and thermal properties of microstructures in butterfly wings](
Anirudh Krishna, Xiao Nie, Andrew D. Warren, Jorge E. Llorente-Bousquets, Adriana D. Briscoe, and Jaeho Lee
[Land-use history impacts functional diversity across multiple trophic groups](
Gaëtane Le Provost, Isabelle Badenhausser, Yoann Le Bagousse-Pinguet, Yann Clough, Laura Henckel, Cyrille Violle, Vincent Bretagnolle, Marilyn Roncoroni, Peter Manning, and Nicolas Gross
[Scaling the risk landscape drives optimal life-history strategies and the evolution of grazing](
Uttam Bhat, Christopher P. Kempes, and Justin D. Yeakel
[Recovery of critically endangered Nassau grouper (Epinephelus striatus) in the Cayman Islands following targeted conservation actions](
Lynn Waterhouse, Scott A. Heppell, Christy V. Pattengill-Semmens, Croy McCoy, Phillippe Bush, Bradley C. Johnson, and Brice X. Semmens
Environmental Sciences
[High productivity in hybrid-poplar plantations without isoprene emission to the atmosphere](
Russell K. Monson, Barbro Winkler, Todd N. Rosenstiel, Katja Block, Juliane Merl-Pham, Steven H. Strauss, Kori Ault, Jason Maxfield, David J. P. Moore, Nicole A. Trahan, Amberly A. Neice, Ian Shiach, Greg A. Barron-Gafford, Peter Ibsen, Joel T. McCorkel, Jörg Bernhardt, and Joerg-Peter Schnitzler
Evolution
[Biophysical principles of choanoflagellate self-organization](
Ben T. Larson, Teresa Ruiz-Herrero, Stacey Lee, Sanjay Kumar, L. Mahadevan, and Nicole King
[A compartment size-dependent selective threshold limits mutation accumulation in hierarchical tissues](
Dániel Grajzel, Imre Derényi, and Gergely J. Szöllősi
[Fin ray patterns at the fin-to-limb transition](
Thomas A. Stewart, Justin B. Lemberg, Natalia K. Taft, Ihna Yoo, Edward B. Daeschler, and Neil H. Shubin
Genetics
[Cystic fibrosis carriers are at increased risk for a wide range of cystic fibrosis-related conditions](
Aaron C. Miller, Alejandro P. Comellas, Douglas B. Hornick, David A. Stoltz, Joseph E. Cavanaugh, Alicia K. Gerke, Michael J. Welsh, Joseph Zabner, and Philip M. Polgreen
[Large-scale contractions of Friedreich’s ataxia GAA repeats in yeast occur during DNA replication due to their triplex-forming ability](
Alexandra N. Khristich, Jillian F. Armenia, Robert M. Matera, Anna A. Kolchinski, and Sergei M. Mirkin
[Presynaptic MAST kinase controls opposing postsynaptic responses to convey stimulus valence in Caenorhabditis elegans](
Shunji Nakano, Muneki Ikeda, Yuki Tsukada, Xianfeng Fei, Takamasa Suzuki, Yusuke Niino, Rhea Ahluwalia, Ayana Sano, Rumi Kondo, Kunio Ihara, Atsushi Miyawaki, Koichi Hashimoto, Tetsuya Higashiyama, and Ikue Mori
Immunology and Inflammation
[Structural insight into T cell coinhibition by PD-1H (VISTA)](
Benjamin T. Slater, Xue Han, Lieping Chen, and Yong Xiong
Medical Sciences
[Identification and characterization of extrachromosomal circular DNA in maternal plasma](
Sarah T. K. Sin, Peiyong Jiang, Jiaen Deng, Lu Ji, Suk Hang Cheng, Anindya Dutta, Tak Y. Leung, K. C. Allen Chan, Rossa W. K. Chiu, and Y. M. Dennis Lo
[High-dose ascorbic acid synergizes with anti-PD1 in a lymphoma mouse model](
Rebecca A. Luchtel, Tushar Bhagat, Kith Pradhan, William R. Jacobs Jr, Mark Levine, Amit Verma, and Niraj Shenoy
[Expansion, in vivo–ex vivo cycling, and genetic manipulation of primary human hepatocytes](
Eleftherios Michailidis, Koen Vercauteren, Liliana Mancio-Silva, Linda Andrus, Cyprien Jahan, Inna Ricardo-Lax, Chenhui Zou, Mohammad Kabbani, Paul Park, Corrine Quirk, Christina Pyrgaki, Brandon Razooky, Lieven Verhoye, Irene Zoluthkin, Wei-Yu Lu, Stuart J. Forbes, Luis Chiriboga, Neil D. Theise, Roland W. Herzog, Hiroshi Suemizu, William M. Schneider, Amir Shlomai, Philip Meuleman, Sangeeta N. Bhatia, Charles M. Rice, and Ype P. de Jong
Microbiology
[Designing cyclic competence-stimulating peptide (CSP) analogs with pan-group quorum-sensing inhibition activity in Streptococcus pneumoniae](
Yifang Yang, Jingjun Lin, Anthony Harrington, Gabriel Cornilescu, Gee W. Lau, and Yftah Tal-Gan
[Bile acids and ceramide overcome the entry restriction for GII.3 human norovirus replication in human intestinal enteroids](
Kosuke Murakami, Victoria R. Tenge, Umesh C. Karandikar, Shih-Ching Lin, Sasirekha Ramani, Khalil Ettayebi, Sue E. Crawford, Xi-Lei Zeng, Frederick H. Neill, B. Vijayalakshmi Ayyar, Kazuhiko Katayama, David Y. Graham, Erhard Bieberich, Robert L. Atmar, and Mary K. Estes
[Mitochondrial dysfunctions trigger the calcium signaling-dependent fungal multidrug resistance](
Yeqi Li, Yuanwei Zhang, Chi Zhang, Hongchen Wang, Xiaolei Wei, Peiying Chen, and Ling Lu
[A promiscuous inflammasome sparks replication of a common tumor virus](
Eric M. Burton, Raphaela Goldbach-Mansky, and Sumita Bhaduri-McIntosh
[Robust hepatitis E virus infection and transcriptional response in human hepatocytes](
Daniel Todt, Martina Friesland, Nora Moeller, Dimas Praditya, Volker Kinast, Yannick Brüggemann, Leonard Knegendorf, Thomas Burkard, Joerg Steinmann, Rani Burm, Lieven Verhoye, Avista Wahid, Toni Luise Meister, Michael Engelmann, Vanessa M. Pfankuche, Christina Puff, Florian W. R. Vondran, Wolfgang Baumgärtner, Philip Meuleman, Patrick Behrendt, and Eike Steinmann
Neuroscience
[Microglial IRF5-IRF4 regulatory axis regulates neuroinflammation after cerebral ischemia and impacts stroke outcomes](
Abdullah Al Mamun, Anjali Chauhan, Shaohua Qi, Conelius Ngwa, Yan Xu, Romana Sharmeen, Amy L. Hazen, Jun Li, Jaroslaw A. Aronowski, Louise D. McCullough, and Fudong Liu
[Impaired endothelium-mediated cerebrovascular reactivity promotes anxiety and respiration disorders in mice](
Jan Wenzel, Cathrin E. Hansen, Carla Bettoni, Miriam A. Vogt, Beate Lembrich, Rentsenkhand Natsagdorj, Gianna Huber, Josefine Brands, Kjestine Schmidt, Julian C. Assmann, Ines Stölting, Kathrin Saar, Jan Sedlacik, Jens Fiehler, Peter Ludewig, Michael Wegmann, Nina Feller, Marius Richter, Helge Müller-Fielitz, Thomas Walther, Gabriele M. König, Evi Kostenis, Walter Raasch, Norbert Hübner, Peter Gass, Stefan Offermanns, Cor de Wit, Carsten A. Wagner, and Markus Schwaninger
[NK cells clear α-synuclein and the depletion of NK cells exacerbates synuclein pathology in a mouse model of α-synucleinopathy](
Rachael H. Earls, Kelly B. Menees, Jaegwon Chung, Claire-Anne Gutekunst, Hyun Joon Lee, Manuel G. Hazim, Balázs Rada, Levi B. Wood, and Jae-Kyung Lee
Physiology
[Internal fluid pressure influences muscle contractile force](
David A. Sleboda and Thomas J. Roberts
[Specialized stellate cells offer a privileged route for rapid water flux in Drosophila renal tubule](
Pablo Cabrero, Selim Terhzaz, Anthony J. Dornan, Saurav Ghimire, Heather L. Holmes, Daniel R. Turin, Michael F. Romero, Shireen A. Davies, and Julian A. T. Dow
[Cryo-EM structures of a lipid-sensitive pentameric ligand-gated ion channel embedded in a phosphatidylcholine-only bilayer](
Pramod Kumar, Yuhang Wang, Zhening Zhang, Zhiyu Zhao, Gisela D. Cymes, Emad Tajkhorshid, and Claudio Grosman
Plant Biology
[The maize heterotrimeric G protein β subunit controls shoot meristem development and immune responses](
Qingyu Wu, Fang Xu, Lei Liu, Si Nian Char, Yezhang Ding, Byoung Il Je, Eric Schmelz, Bing Yang, and David Jackson
[The rhizobial autotransporter determines the symbiotic nitrogen fixation activity of Lotus japonicus in a host-specific manner](
Yoshikazu Shimoda, Yuki Nishigaya, Hiroko Yamaya-Ito, Noritoshi Inagaki, Yosuke Umehara, Hideki Hirakawa, Shusei Sato, Toshimasa Yamazaki, and Makoto Hayashi
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Corrections
[Correction for Perkins, Core Concept: Albedo is a simple concept that plays complicated roles in climate and astronomy](
[Correction for Mann, Core Concept: To improve weather and climate models, researchers are chasing atmospheric gravity waves](
[Correction for Porter et al., Epithelial to mesenchymal plasticity and differential response to therapies in pancreatic ductal adenocarcinoma](
[Correction for Hu et al., Structural bases for F plasmid conjugation and F pilus biogenesis in Escherichia coli](
[Cover]
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