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|  | | 11 December 2012 | | | Featured image: | |  | | | Wilson et al. identify a new mimicry system in over 60 species of North American velvet ants. | | | | | | |
Advertisement | | | | | | | | | Latest Review | View all Reviews | | | | | Moving from static to dynamic complexity in hydrogel design | | | Jason A. Burdick and William L. Murphy | | | Hydrogels are water-containing polymer networks that have been applied in various biological settings. Burdick and Murphy review recent advances in the development of dynamic hydrogels whose properties and mechanics change in response to biological signals. | | | 11 Dec | Nat Commun 3:1269 doi:10.1038/ncomms2271 (2012) | | | Chemical sciences Bioengineering | | | Materials science | | | Abstract | Full Text | PDF (905 kB) | | | | | | Latest Articles | View all Articles | | | | | Distinct modes of DNA accessibility in plant chromatin | | | Huan Shu, Thomas Wildhaber, Alexey Siretskiy, Wilhelm Gruissem and Lars Hennig | | | Epigenetic modifications are thought to affect the accessibility of DNA, but it is not clear whether this is a universal effect. These authors map DNA accessibility in Arabidopsis thaliana and find that, in contrast to fruitflies, H3K9 dimethylation reduces accessibility in a DNA methylation-dependent manner. | | | 11 Dec | Nat Commun 3:1281 doi:10.1038/ncomms2259 (2012) | | | Biological sciences Molecular biology Plant sciences | | Abstract | Full Text | PDF (978 kB) |
Supplementary Information |
| Modulation-doped growth of mosaic graphene with single-crystalline p–n junctions for efficient photocurrent generation OPEN | | | Kai Yan, Di Wu, Hailin Peng, Li Jin, Qiang Fu, Xinhe Bao and Zhongfan Liu | | | Combination of p- and n-doped graphene is important in optoelectronic applications, but spatially selective doping of graphene is challenging. This work reports large-scale growth of graphene monolayers with spatially modulation doping and built-in single-crystalline p–n junctions. | | | 11 Dec | Nat Commun 3:1280 doi:10.1038/ncomms2286 (2012) | | | Physical sciences Applied physics | | | Materials science | | | Nanotechnology | | Abstract | Full Text | PDF (2,270 kB) |
Supplementary Information |
| Reprogramming to pluripotency is an ancient trait of vertebrate Oct4 and Pou2 proteins | | | Natalia Tapia, Peter Reinhardt, Annett Duemmler, Guangming Wu, Marcos J. Araúzo-Bravo, Daniel Esch, Boris Greber, Vlad Cojocaru, Cynthia Alexander Rascon, Akira Tazaki, Kevin Kump, Randal Voss, Elly M. Tanaka and Hans R. Schöler | | | The mammalian transcription factors Oct4 and Pou2 are implicated in germ cell pluripotency induction and maintenance. Tapia and colleagues find that axolotl Pou2 and Oct4 reprogram mouse and human fibroblasts to a pluripotent state, suggesting ancestral Oct4 and Pou2 gene function is evolutionarily conserved. | | | 11 Dec | Nat Commun 3:1279 doi:10.1038/ncomms2229 (2012) | | | Biological sciences Developmental biology | | | Evolution | | Abstract | Full Text | PDF (6,040 kB) |
Supplementary Information |
| Holographic detection of the orbital angular momentum of light with plasmonic photodiodes | | | Patrice Genevet, Jiao Lin, Mikhail A. Kats and Federico Capasso | | | Sub-wavelength structures can be used to convert between light and plasmon polaritons. Genevet et al. design holographic plasmonic interfaces that couple vortex light beams to surface plasmons, allowing them to detect the orbital angular momentum of the beam with a simple silicon photodiode. | | | 11 Dec | Nat Commun 3:1278 doi:10.1038/ncomms2293 (2012) | | | Physical sciences Applied physics | | | Nanotechnology Optical physics | | | | Abstract | Full Text | PDF (1,099 kB) |
Supplementary Information |
| Magneto-orbital helices as a route to coupling magnetism and ferroelectricity in multiferroic CaMn7O12 | | | N.J. Perks, R.D. Johnson, C. Martin, L.C. Chapon and P.G. Radaelli | | | The coupling of magnetism and ferroelectricity is of relevance for applications such as sensing, but occurs only rarely in bulk materials. The large magnetically induced ferroelectric polarization observed here in CaMn7O12 establishes a new approach to achieve a strong magnetoelectric coupling. | | | 11 Dec | Nat Commun 3:1277 doi:10.1038/ncomms2294 (2012) | | | Physical sciences Condensed matter | | | | Abstract | Full Text | PDF (1,853 kB) |
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| Single-particle structure determination by correlations of snapshot X-ray diffraction patterns | | | D. Starodub, A. Aquila, S. Bajt, M. Barthelmess, A. Barty, C. Bostedt, J.D. Bozek, N. Coppola, R.B. Doak, S.W. Epp, B. Erk, L. Foucar, L. Gumprecht, C.Y. Hampton, A. Hartmann, R. Hartmann, P. Holl, S. Kassemeyer, N. Kimmel, H. Laksmono, M. Liang, N.D. Loh, L. Lomb, A.V. Martin, K. Nass, C. Reich, D. Rolles, B. Rudek, A. Rudenko, J. Schulz, R.L. Shoeman, R.G. Sierra, H. Soltau, J. Steinbrener, F. Stellato, S. Stern, G. Weidenspointner, M. Frank, J. Ullrich, L. Strüder, I. Schlichting, H.N. Chapman, J.C.H. Spence and M.J. Bogan | | | Free-electron lasers enable diffractive imaging of single nanostructures, but algorithms, such as correlation analyses, are needed to determine their diffraction volume from accumulated data. Starodub et al. present such a method for X-ray diffractive imaging of nanometre-scale polystyrene dimers. | | | 11 Dec | Nat Commun 3:1276 doi:10.1038/ncomms2288 (2012) | | | Physical sciences Optical physics | | Abstract | Full Text | PDF (1,505 kB) |
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| Microelectromechanical Maltese-cross metamaterial with tunable terahertz anisotropy OPEN | | | W.M. Zhu, A.Q. Liu, T. Bourouina, D.P. Tsai, J.H. Teng, X.H. Zhang, G.Q. Lo, D.L. Kwong and N.I. Zheludev | | | Metamaterials can be designed with anisotropy, which tailors their optical properties to enable interesting functionalities. Here, the anisotropy of a Maltese-cross metamaterial is actively controlled by an actuator, allowing for tunable birefringence and dichroism in the terahertz frequency region. | | | 11 Dec | Nat Commun 3:1274 doi:10.1038/ncomms2285 (2012) | | | Physical sciences Materials science | | | Optical physics | | | | Abstract | Full Text | PDF (2,114 kB) |
Supplementary Information |
| Repeated evolution in overlapping mimicry rings among North American velvet ants | | | Joseph S. Wilson, Kevin A. Williams, Matthew L. Forister, Carol D. von Dohlen and James P. Pitts | | | In Müllerian mimicry two or more harmful species share a similar appearance for mutual benefit. This study identifies a large Müllerian mimicry complex in North American velvet ants, where 65 species mimic each other through shared colour patterns gained as the result of independent evolution. | | | 11 Dec | Nat Commun 3:1272 doi:10.1038/ncomms2275 (2012) | | | Biological sciences Ecology | | | Evolution | | Abstract | Full Text | PDF (867 kB) |
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| Receptor tyrosine kinase ErbB2 translocates into mitochondria and regulates cellular metabolism | | | Yan Ding, Zixing Liu, Shruti Desai, Yuhua Zhao, Hao Liu, Lewis K. Pannell, Hong Yi, Elizabeth R. Wright, Laurie B. Owen, Windy Dean-Colomb, Oystein Fodstad, Jianrong Lu, Susan P. LeDoux, Glenn L. Wilson and Ming Tan | | | ErbB2 is a receptor tyrosine kinase that localizes to the plasma membrane. Ding et al. now show that ErbB2 also localizes to mitochondria, where it regulates mitochondrial respiratory function and resistance to cancer chemotherapy. | | | 11 Dec | Nat Commun 3:1271 doi:10.1038/ncomms2236 (2012) | | | Biological sciences Cancer | | | Cell biology | | Abstract | Full Text | PDF (2,057 kB) |
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| Expansion–contraction of photoresponsive artificial muscle regulated by host–guest interactions OPEN | | | Yoshinori Takashima, Shogo Hatanaka, Miyuki Otsubo, Masaki Nakahata, Takahiro Kakuta, Akihito Hashidzume, Hiroyasu Yamaguchi and Akira Harada | | | Polymer-based actuators, which deform in response to external stimuli, may advance the understanding of biological movement or realization of soft robotics. Here, Harada et al. report a photo-responsive supramolecular hydrogel that displays expansion–contraction abilities owing to host–guest interactions. | | | 11 Dec | Nat Commun 3:1270 doi:10.1038/ncomms2280 (2012) | | | Chemical sciences Materials science | | | | Abstract | Full Text | PDF (1,558 kB) |
Supplementary Information |
| T-bet and GATA3 orchestrate Th1 and Th2 differentiation through lineage-specific targeting of distal regulatory elements OPEN | | | Aditi Kanhere, Arnulf Hertweck, Urvashi Bhatia, M. Refik Gökmen, Esperanza Perucha, Ian Jackson, Graham M. Lord and Richard G. Jenner | | | T-bet and GATA3 regulate differentiation of T cells into Th1 or Th2 cell fates, but little is known about their functional interaction outside of the IFNγ and Il4 /Il5/Il13 loci. Kanhere et al. map these factors across the genome in human T cells, revealing unappreciated breadth of function and interplay between them. | | | 11 Dec | Nat Commun 3:1268 doi:10.1038/ncomms2260 (2012) | | | Biological sciences Immunology | | | | Abstract | Full Text | PDF (1,711 kB) |
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| Preotic neural crest cells contribute to coronary artery smooth muscle involving endothelin signalling | | | Yuichiro Arima, Sachiko Miyagawa-Tomita, Kazuhiro Maeda, Rieko Asai, Daiki Seya, Maryline Minoux, Filippo M. Rijli, Koichi Nishiyama, Ki-Sung Kim, Yasunobu Uchijima, Hisao Ogawa, Yukiko Kurihara and Hiroki Kurihara | | | Endothelin-1 regulates cardiovascular development by acting on neural crest cells. Here endothelin-1-deficient mice are studied, revealing that preotic neural crest cells differentiate into coronary artery smooth muscle cells through endothelin-1-dependent mechanisms. | | | 11 Dec | Nat Commun 3:1267 doi:10.1038/ncomms2258 (2012) | | | Biological sciences Developmental biology | | | | Abstract | Full Text | PDF (5,229 kB) |
Supplementary Information |
| Growth and optical properties of axial hybrid III–V/silicon nanowires | | | Moïra Hocevar, George Immink, Marcel Verheijen, Nika Akopian, Val Zwiller, Leo Kouwenhoven and Erik Bakkers | | | Nanowires with sharp interfaces between two different semiconducting materials could lead to useful nanoelectronic and nanophotonic structures. Hocevar et al. develop a method to integrate a gallium arsenide section in silicon nanowires with atomically sharp interfaces and no dislocations. | | | 11 Dec | Nat Commun 3:1266 doi:10.1038/ncomms2277 (2012) | | | Chemical sciences Materials science | | | Nanotechnology | | Abstract | Full Text | PDF (985 kB) |
Supplementary Information |
| Stretchable heterogeneous composites with extreme mechanical gradients | | | Rafael Libanori, Randall M. Erb, Alain Reiser, Hortense Le Ferrand, Martin J. Süess, Ralph Spolenak and André R. Studart | | | Heterogeneous composite materials, which are potentially useful for flexible electronics, are widespread in nature but synthetic examples are rare. Here, a site-specific hierarchical approach is used to fabricate composites with extreme local variations in elastic modulus and which are reversibly stretchable. | | | 11 Dec | Nat Commun 3:1265 doi:10.1038/ncomms2281 (2012) | | | Chemical sciences Materials science | | | | Abstract | Full Text | PDF (2,425 kB) |
Supplementary Information |
| Exhaustion of nucleus pulposus progenitor cells with ageing and degeneration of the intervertebral disc OPEN | | | Daisuke Sakai, Yoshihiko Nakamura, Tomoko Nakai, Taishi Mishima, Shunichi Kato, Sibylle Grad, Mauro Alini, Makarand V. Risbud, Danny Chan, Kathryn S.E. Cheah, Ken-ichi Yamamura, Koichi Masuda, Hideyuki Okano, Kiyoshi Ando and Joji Mochida | | | Back pain and sciatica are often caused by intervertebral disc degeneration. Sakai and colleagues identify a subset of nucleus pulposus progenitor cells from the intervertebral disc and show that loss of these progenitor cells correlates with ageing and intervertebral disc degeneration. | | | 11 Dec | Nat Commun 3:1264 doi:10.1038/ncomms2226 (2012) | | | Biological sciences Medical research | | | | Abstract | Full Text | PDF (3,846 kB) |
Supplementary Information |
| Mechanisms of carbon storage in mountainous headwater rivers | | | Ellen Wohl, Kathleen Dwire, Nicholas Sutfin, Lina Polvi and Roberto Bazan | | | Rivers receive more terrestrial carbon than they transport to the ocean, leaving carbon stored along the way. Here, with an estimate of carbon storage in the headwater rivers of the Rocky Mountains, the authors show that broad valley bottoms with old-growth forest store most of the above- and below-ground carbon. | | | 11 Dec | Nat Commun 3:1263 doi:10.1038/ncomms2274 (2012) | | | Earth sciences Biogeochemistry | | | Geology and geophysics | | | Abstract | Full Text | PDF (767 kB) |
| Luminescent proteins for high-speed single-cell and whole-body imaging OPEN | | | Kenta Saito, Y-F Chang, Kazuki Horikawa, Noriyuki Hatsugai, Yuriko Higuchi, Mitsuru Hashida, Yu Yoshida, Tomoki Matsuda, Yoshiyuki Arai and Takeharu Nagai | | | Luminescent proteins are important tools for biomedical imaging but tend to emit fairly little light. Saito et al. describe a brighter version of a bioluminescent protein that can visualize intracellular dynamics of various signalling molecules with high spatial and temporal resolution. | | | 11 Dec | Nat Commun 3:1262 doi:10.1038/ncomms2248 (2012) | | | Biological sciences Biotechnology | | | Cell biology | | Abstract | Full Text | PDF (1,240 kB) |
Supplementary Information |
| Cambrian lobopodians and extant onychophorans provide new insights into early cephalization in Panarthropoda OPEN | | | Qiang Ou, Degan Shu and Georg Mayer | | | Lobopodians include stem-group arthropods and panarthropods, and date back to the early Cambrian. Ou et al. describe specimens of the early Cambrian lobopodian Onychodictyon ferox, revealing new head structures such as modified appendages, eyes, a terminal mouth and a sucking pharynx. | | | 11 Dec | Nat Commun 3:1261 doi:10.1038/ncomms2272 (2012) | | | Biological sciences Evolution | | | Palaeontology | | Abstract | Full Text | PDF (3,787 kB) |
Supplementary Information |
| MPIase is a glycolipozyme essential for membrane protein integration OPEN | | | Ken-ichi Nishiyama, Masahide Maeda, Kayo Yanagisawa, Ryohei Nagase, Hajime Komura, Takashi Iwashita, Tohru Yamagaki, Shoichi Kusumoto, Hajime Tokuda and Keiko Shimamoto | | | Proteins are integrated into cellular membranes either co-translationally through Sec/SRP or post-translationally by chaperones. These authors show that an integration-dedicated chaperone in E. coli, MPIase, is a glycolipid and facilitates protein insertion into the inner membrane of the bacterium. | | | 11 Dec | Nat Commun 3:1260 doi:10.1038/ncomms2267 (2012) | | | Biological sciences Biochemistry | | | Cell biology Microbiology | | Abstract | Full Text | PDF (918 kB) |
Supplementary Information |
| Ultra-flexible solution-processed organic field-effect transistors | | | Hee Taek Yi, Marcia M. Payne, John E. Anthony and Vitaly Podzorov | | | Organic electronic materials are promising candidates for applications in which flexible electronic devices are required. Yi et al. demonstrate a high-performance, flexible organic transistor based on solution-processed small molecules that can be fabricated with a simple, low-cost process. | | | 11 Dec | Nat Commun 3:1259 doi:10.1038/ncomms2263 (2012) | | | Physical sciences Applied physics | | | Condensed matter Materials science | | Abstract | Full Text | PDF (865 kB) |
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