Unintended consequences p.7

After the introduction of a clumsily worded new rule, the UK government should move quickly to reassure scientists that they can continue to advise policymakers.

doi: 10.1038/531007a

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Future present p.7

A young global-sustainability platform deserves time to find its feet.

doi: 10.1038/531007b

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Brain power p.8

As brain stimulation finds non-medical uses, now is the time to consider its implications.

doi: 10.1038/531008a

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Speedier Arctic data as warm winter shrinks sea ice p.15

Scientists push for better monitoring of what remains.

Alexandra Witze

doi: 10.1038/531015a

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India’s budget keeps dream of genomics hub alive p.16

Biotechnology agency wants to upgrade capabilities to kick-start economic growth.

T. V. Padma

doi: 10.1038/531016a

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Conflicting laws threaten Ukrainian science p.18

Country’s austerity budget stands in way of law to modernize Soviet-era academy.

Quirin Schiermeier

doi: 10.1038/531018a

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Spectre of Ebola haunts Zika response p.19

Agencies rush to show that outbreak tactics have improved.

Erika Check Hayden

doi: 10.1038/531019a

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Successful test drive for space-based gravitational-wave detector p.20

Mission paves the way for planned €1-billion space observatory.

Elizabeth Gibney

doi: 10.1038/nature.2016.19452

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Epic El Niño yields massive data trove p.20

Waning warming event studied in unprecedented detail.

Jeff Tollefson

doi: 10.1038/531020a

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News Features

エネルギー: 水圧破砕はヨーロッパの力となるか

Can fracking power Europe? p.22

Several countries hope to unleash vast natural-gas reserves through fracking, but drilling attempts have been disappointing.

Mason Inman

doi: 10.1038/531022a

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材料科学: ナノスケールの虹

The nanolight revolution is coming p.26

Virus-sized particles that fluoresce in every colour could revolutionize applications from television displays to cancer treatment.

XiaoZhi Lim

doi: 10.1038/531026a

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News & Views

有機化学: 電気で開始される化学反応

Organic chemistry: Reactions triggered electrically p.38

Single-molecule experiments have revealed that chemical reactions can be controlled using electric fields — and that the reaction rate is sensitive to both the direction and the strength of the applied field. See Letter p.88

Limin Xiang & N. J. Tao

doi: 10.1038/531038a

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進化: ミトコンドリアの登場は第二幕から

Evolution: Mitochondria in the second act p.39

A large phylogenomics study reveals that the symbiotic event that led to the emergence of organelles known as mitochondria may have occurred later in the evolution of complex cells than was thought. See Letter p.101

Thijs J. G. Ettema

doi: 10.1038/nature16876

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重力波: 新しい天文学の夜明け

Gravitational waves: Dawn of a new astronomy p.40

The discovery of gravitational waves from a merging black-hole system opens a window on the Universe that promises to test gravity at its strongest, and to reveal many surprises about black holes and other astrophysical systems.

M. Coleman Miller

doi: 10.1038/nature17306

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幹細胞: 食餌中の脂肪は腸の調節異常を促進する

Stem cells: Dietary fat promotes intestinal dysregulation p.42

In mice, a high-fat diet has now been found to induce intestinal progenitor cells to adopt a more stem-cell-like fate, altering the size of the gut and increasing tumour incidence. See Article p.53

Chi Luo & Pere Puigserver

doi: 10.1038/531042a

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宇宙科学: 銀河系外からの宇宙線

Space science: Cosmic rays beyond the knees p.43

The development of a radio technique for detecting cosmic rays casts fresh light on the origins of some of these accelerated particles, and suggests that they might have travelled much farther than was previously thought. See Letter p.70

Andrew M. Taylor

doi: 10.1038/531043a

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再生: 幹細胞で腸に神経系を作り出す

Regeneration: Stem cells make the bowel nervous p.44

In Hirschsprung disease, the enteric nervous system (ENS) is missing from the distal bowel. It emerges that postnatal transplantation of stem-cell-derived ENS precursors can prevent death in a mouse model of the disease. See Letter p.105

Robert O. Heuckeroth

doi: 10.1038/nature16877

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がんゲノミクス: ゲノム解析から明らかになった膵臓がんの分子的サブタイプ

Genomic analyses identify molecular subtypes of pancreatic cancer p.47

An integrated genomic analysis of 456 human pancreatic ductal adenocarcinomas identifies four subtypes defined by transcriptional expression profiles and show that these are associated with distinct histopathological characteristics and differential prognosis.

Peter Bailey, David K. Chang, Katia Nones, Amber L. Johns, Ann-Marie Patch, Marie-Claude Gingras, David K. Miller, Angelika N. Christ, Tim J. C. Bruxner, Michael C. Quinn + et al.

doi: 10.1038/nature16965

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がんの代謝: 高脂肪食は腸前駆細胞の幹細胞性と腫瘍発生性を高める

High-fat diet enhances stemness and tumorigenicity of intestinal progenitors p.53

A high-fat diet increases the number of intestinal stem cells in mammals, both in vivo and in intestinal organoids; a pathway that involves PPAR-δ confers organoid-initiating capacity to non-stem cells and induces them to form in vivo tumours after loss of the Apc tumour suppressor.

Semir Beyaz, Miyeko D. Mana, Jatin Roper, Dmitriy Kedrin, Assieh Saadatpour, Sue-Jean Hong, Khristian E. Bauer-Rowe, Michael E. Xifaras, Adam Akkad, Erika Arias + et al.

doi: 10.1038/nature17173

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微生物学: 細菌の収縮性尾部構造のプライミングと重合

Priming and polymerization of a bacterial contractile tail structure p.59

A combination of X-ray crystallography, electron microscopy, functional assays and time-lapse fluorescence microscopy shows that a protein of previously unknown function, TssA, forms a dodecameric complex that interacts with components of the tube and sheath of the type VI secretion system of bacteria, and that it primes and coordinates biogenesis of both the tail tube and the sheath.

Abdelrahim Zoued, Eric Durand, Yannick R. Brunet, Silvia Spinelli, Badreddine Douzi, Mathilde Guzzo, Nicolas Flaugnatti, Pierre Legrand, Laure Journet, Rémi Fronzes + et al.

doi: 10.1038/nature17182

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構造生物学: BAM複合体による外膜タンパク質挿入の構造基盤

Structural basis of outer membrane protein insertion by the BAM complex p.64

Two crystal structures of the Escherichia coli β-barrel assembly machinery (BAM complex) are presented, one of which includes all five subunits (BamA–BamE), in two distinct conformational states; together with functional assays and molecular dynamics stimulations, these structures help to generate a model for outer membrane protein insertion.

Yinghong Gu, Huanyu Li, Haohao Dong, Yi Zeng, Zhengyu Zhang, Neil G. Paterson, Phillip J. Stansfeld, Zhongshan Wang, Yizheng Zhang, Wenjian Wang + et al.

doi: 10.1038/nature17199

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高エネルギー宇宙物理学: 電波観測による1017~1017.5電子ボルトの宇宙線における大きな軽質量成分

A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations p.70

High-resolution radio measurements of air showers—cascades of secondary particles in the atmosphere initiated by cosmic rays—reveal that cosmic rays with energies of 1017–1017.5 electronvolts have a mixed composition, with light elements (protons and helium nuclei) making up 80 per cent of their mass.

S. Buitink, A. Corstanje, H. Falcke, J. R. Hörandel, T. Huege, A. Nelles, J. P. Rachen, L. Rossetto, P. Schellart, O. Scholten + et al.

doi: 10.1038/nature16976

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量子光学: 共振器によるスピン緩和の制御

Controlling spin relaxation with a cavity p.74

By coupling donor spins in silicon to a superconducting microwave cavity and tuning the spins to the cavity resonance, the rate of spin relaxation is increased by three orders of magnitude compared to that of detuned spins; in such a regime, spontaneous emission of radiation is the dominant mechanism of spin relaxation.

A. Bienfait, J. J. Pla, Y. Kubo, X. Zhou, M. Stern, C. C. Lo, C. D. Weis, T. Schenkel, D. Vion, D. Esteve + et al.

doi: 10.1038/nature16944

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材料科学: すべりやすい非対称な突起上での凝縮

Condensation on slippery asymmetric bumps p.78

A surface engineering approach is described that is inspired by the water-condensation capability of the bumps on desert beetles, the droplet transportation facilitated by cactus spines and the slippery coating of the pitcher plant, to produce a structure with many water-harvesting applications.

Kyoo-Chul Park, Philseok Kim, Alison Grinthal, Neil He, David Fox, James C. Weaver & Joanna Aizenberg

doi: 10.1038/nature16956

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化学: 高活性触媒の前駆体としての安定なアモルファス・ジョージャイト

Stable amorphous georgeite as a precursor to a high-activity catalyst p.83

Hydroxycarbonate minerals such as zincian malachite and aurichalcite are well known precursors to catalysts for methanol-synthesis and low-temperature water–gas shift reactions; here, a supercritical antisolvent method is used to prepare highly stable georgeite—a hydroxycarbonate mineral that has hitherto been ignored because of its rarity, but which is found to be a superior catalyst precursor.

Simon A. Kondrat, Paul J. Smith, Peter P. Wells, Philip A. Chater, James H. Carter, David J. Morgan, Elisabetta M. Fiordaliso, Jakob B. Wagner, Thomas E. Davies, Li Lu + et al.

doi: 10.1038/nature16935

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化学: ディールス・アルダー反応の静電触媒反応

Electrostatic catalysis of a Diels–Alder reaction p.88

Theory suggests that many chemical reactions (not simply, as is often thought, redox reactions) might be catalysed by an applied electric field; experimental evidence for this is now provided from single-molecule studies of the formation of carbon–carbon bonds in a Diels–Alder reaction.

Albert C. Aragonès, Naomi L. Haworth, Nadim Darwish, Simone Ciampi, Nathaniel J. Bloomfield, Gordon G. Wallace, Ismael Diez-Perez & Michelle L. Coote

doi: 10.1038/nature16989

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地震学: 上盤プレートが2011年マグニチュード9.0東北沖地震の地震時すべりを支配した

Upper-plate controls on co-seismic slip in the 2011 magnitude 9.0 Tohoku-oki earthquake p.92

Residual topography and gravity anomalies reveal a tectonic boundary in northeast Japan, which is proposed to represent the offshore continuation of the Median Tectonic Line; the contrast in frictional properties across this structure may control earthquake behaviour there, as recently demonstrated by the giant 2011 Tohoku-oki earthquake.

Dan Bassett, David T. Sandwell, Yuri Fialko & Anthony B. Watts

doi: 10.1038/nature16945

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進化生物学: 祖先的脊椎動物の脳の複雑な領域化を裏付ける円口類からの証拠

Evidence from cyclostomes for complex regionalization of the ancestral vertebrate brain p.97

The brain of the hagfish, a cyclostome related to the lamprey, develops domains equivalent to the median ganglionic eminence and the rhombic lip, resembling the brains of gnathostomes (jawed vertebrates), suggesting that brain regionalization in jawed vertebrates occurred before the divergence of cyclostomes and gnathostomes more than 500 million years ago.

Fumiaki Sugahara, Juan Pascual-Anaya, Yasuhiro Oisi, Shigehiro Kuraku, Shin-ichi Aota, Noritaka Adachi, Wataru Takagi, Tamami Hirai, Noboru Sato, Yasunori Murakami + et al.

doi: 10.1038/nature16518

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進化生物学: キメラな原核生物起源を持つ宿主によるミトコンドリアの後期獲得

Late acquisition of mitochondria by a host with chimaeric prokaryotic ancestry p.101

Evidence that among the eukaryotic ancestor genes, those derived from the proto-mitochondrion have the closest evolutionary distances to their bacterial relatives.

Alexandros A. Pittis & Toni Gabaldón

doi: 10.1038/nature16941

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再生医療: ヒルシュスプルング病の細胞治療や創薬のためのヒトENS細胞系譜の誘導

Deriving human ENS lineages for cell therapy and drug discovery in Hirschsprung disease p.105

A differentiation protocol to obtain enteric nervous system (ENS) progenitors and a range of neurons from human pluripotent stem cells is developed; the cells can migrate and graft to the colon of a chick embryo and an adult mouse colon, including in a mouse model of Hirschsprung disease, in which a functional rescue is observed.

Faranak Fattahi, Julius A Steinbeck, Sonja Kriks, Jason Tchieu, Bastian Zimmer, Sarah Kishinevsky, Nadja Zeltner, Yvonne Mica, Wael El-Nachef, Huiyong Zhao + et al.

doi: 10.1038/nature16951

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がんの代謝: 変異型Krasのコピー数は代謝の再プログラム化と治療感受性を決定する

Mutant Kras copy number defines metabolic reprogramming and therapeutic susceptibilities p.110

Mutant Kras lung tumours are not a single disease but comprise two classes of tumours with distinct metabolic profiles, prognosis and therapeutic susceptibility, which can be discriminated by their relative mutant Kras allelic content.

Emma M. Kerr, Edoardo Gaude, Frances K. Turrell, Christian Frezza & Carla P. Martins

doi: 10.1038/nature16967

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ウイルス学: コロナウイルスのスパイク糖タンパク質三量体の低温電子顕微鏡構造

Cryo-electron microscopy structure of a coronavirus spike glycoprotein trimer p.114

The high-resolution cryo-electron microscopy structure of a pre-fusion coronavirus spike trimer from mouse hepatitis virus is presented; the structure reveals architectural similarities to paramyxovirus F proteins, suggesting that these fusion proteins may have evolved from a distant common ancestor.

Alexandra C. Walls, M. Alejandra Tortorici, Berend-Jan Bosch, Brandon Frenz, Peter J. M. Rottier, Frank DiMaio, Félix A. Rey & David Veesler

doi: 10.1038/nature16988

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ウイルス学: ヒトコロナウイルスのスパイクタンパク質の融合前の構造

Pre-fusion structure of a human coronavirus spike protein p.118

A 4.0 Å resolution cryo-electron microscopy structure of the pre-fusion form of the trimeric spike from the human coronavirus HKU1 provides insight into how the spike protein mediates host-cell attachment and membrane fusion.

Robert N. Kirchdoerfer, Christopher A. Cottrell, Nianshuang Wang, Jesper Pallesen, Hadi M. Yassine, Hannah L. Turner, Kizzmekia S. Corbett, Barney S. Graham, Jason S. McLellan & Andrew B. Ward

doi: 10.1038/nature17200

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構造生物学: 真核生物翻訳開始因子eIF2Bの結晶構造

Crystal structure of eukaryotic translation initiation factor 2B p.122

The crystal structure of Schizosaccharomyces pombe guanine nucleotide exchange factor eIF2B, providing a structural framework for the eIF2B-mediated mechanism of stress-induced translational control.

Kazuhiro Kashiwagi, Mari Takahashi, Madoka Nishimoto, Takuya B. Hiyama, Toshiaki Higo, Takashi Umehara, Kensaku Sakamoto, Takuhiro Ito & Shigeyuki Yokoyama

doi: 10.1038/nature16991

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