| | This journal provides immediate access to some articles. In This Issue Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8789–8790. doi: 10.1073/iti2505102.PMCID: PMC1157067 Introduction Molecular Electronics Special Feature: Molecular electronics Christian Joachim and Mark A. Ratner Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8800. Published online 2005 June 14. doi: 10.1073/pnas.0504046102.PMCID: PMC1157065 Commentaries Gene duplication and the origin of novel proteins Austin L. Hughes Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8791–8792. Published online 2005 June 13. doi: 10.1073/pnas.0503922102.PMCID: PMC1157061 Diversifying the repertoire of G protein-coupled receptors through oligomerization Paul S.-H. Park and Krzysztof Palczewski Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8793–8794. Published online 2005 June 13. doi: 10.1073/pnas.0504016102.PMCID: PMC1157063 Perspective Charge transport in DNA in solution: The role of polarons Esther M. Conwell Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8795–8799. Published online 2005 June 14. doi: 10.1073/pnas.0501406102.PMCID: PMC1157033 Molecular Electronics Special Feature Perspective Molecular electronics: Some views on transport junctions and beyond Christian Joachim and Mark A. Ratner Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8801–8808. Published online 2005 June 14. doi: 10.1073/pnas.0500075102.PMCID: PMC1157019 Scanning tunneling microscopy experiments on single molecular landers Francesca Moresco and André Gourdon Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8809–8814. Published online 2005 June 14. doi: 10.1073/pnas.0500915102.PMCID: PMC1157026 Molecular Electronics Special Feature: A single-molecule diode Mark Elbing, Rolf Ochs, Max Koentopp, Matthias Fischer, Carsten von Hänisch, Florian Weigend, Ferdinand Evers, Heiko B. Weber, and Marcel Mayor Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8815–8820. Published online 2005 June 13. doi: 10.1073/pnas.0408888102.PMCID: PMC1157012 Molecular Electronics Special Feature: Probing π-coupling in molecular junctions Dwight S. Seferos, Scott A. Trammell, Guillermo C. Bazan, and James G. Kushmerick Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8821–8825. Published online 2005 June 14. doi: 10.1073/pnas.0500002102.PMCID: PMC1157018 Molecular Electronics Special Feature: Vibrational inelastic scattering effects in molecular electronics H. Ness and A. J. Fisher Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8826–8831. Published online 2005 June 13. doi: 10.1073/pnas.0500389102.PMCID: PMC1157022 Molecular Electronics Special Feature: Tunneling rates in electron transport through double-barrier molecular junctions in a scanning tunneling microscope G. V. Nazin, S. W. Wu, and W. Ho Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8832–8837. Published online 2005 June 14. doi: 10.1073/pnas.0501171102.PMCID: PMC1157031 Molecular Electronics Special Feature: Probing charge transport at the single-molecule level on silicon by using cryogenic ultra-high vacuum scanning tunneling microscopy Nathan P. Guisinger, Nathan L. Yoder, and Mark C. Hersam Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8838–8843. Published online 2005 June 13. doi: 10.1073/pnas.0501214102.PMCID: PMC1157032 Physical Sciences Applied Mathematics A quasi-Monte Carlo Metropolis algorithm Art B. Owen and Seth D. Tribble Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8844–8849. Published online 2005 June 13. doi: 10.1073/pnas.0409596102.PMCID: PMC1150275 The turbulent wall jet: A triple-layered structure and incomplete similarity G. I. Barenblatt, A. J. Chorin, and V. M. Prostokishin Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8850–8853. Published online 2005 June 9. doi: 10.1073/pnas.0503186102.PMCID: PMC1157044 Chemistry Molecular Electronics Special Feature: A single-molecule diode Mark Elbing, Rolf Ochs, Max Koentopp, Matthias Fischer, Carsten von Hänisch, Florian Weigend, Ferdinand Evers, Heiko B. Weber, and Marcel Mayor Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8815–8820. Published online 2005 June 13. doi: 10.1073/pnas.0408888102.PMCID: PMC1157012 Molecular Electronics Special Feature: Probing π-coupling in molecular junctions Dwight S. Seferos, Scott A. Trammell, Guillermo C. Bazan, and James G. Kushmerick Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8821–8825. Published online 2005 June 14. doi: 10.1073/pnas.0500002102.PMCID: PMC1157018 Molecular Electronics Special Feature: Vibrational inelastic scattering effects in molecular electronics H. Ness and A. J. Fisher Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8826–8831. Published online 2005 June 13. doi: 10.1073/pnas.0500389102.PMCID: PMC1157022 Molecular Electronics Special Feature: Tunneling rates in electron transport through double-barrier molecular junctions in a scanning tunneling microscope G. V. Nazin, S. W. Wu, and W. Ho Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8832–8837. Published online 2005 June 14. doi: 10.1073/pnas.0501171102.PMCID: PMC1157031 Molecular Electronics Special Feature: Probing charge transport at the single-molecule level on silicon by using cryogenic ultra-high vacuum scanning tunneling microscopy Nathan P. Guisinger, Nathan L. Yoder, and Mark C. Hersam Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8838–8843. Published online 2005 June 13. doi: 10.1073/pnas.0501214102.PMCID: PMC1157032 Atomic-scale dynamical structures of fatty acid bilayers observed by ultrafast electron crystallography Songye Chen, Marco T. Seidel, and Ahmed H. Zewail Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8854–8859. Published online 2005 June 14. doi: 10.1073/pnas.0504022102.PMCID: PMC1150297 Melanin photoprotection in the human retinal pigment epithelium and its correlation with light-induced cell apoptosis Brandon-Luke L. Seagle, Kourous A. Rezai, Yasuhiro Kobori, Elzbieta M. Gasyna, Kasra A. Rezaei, and James R. Norris, Jr. Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8978–8983. Published online 2005 June 10. doi: 10.1073/pnas.0501971102.PMCID: PMC1157035 Engineering Arranging matter by magnetic nanoparticle assemblers Benjamin B. Yellen, Ondrej Hovorka, and Gary Friedman Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8860–8864. Published online 2005 June 13. doi: 10.1073/pnas.0500409102.PMCID: PMC1150276 Environmental Sciences Fire cycles in North American interior grasslands and their relation to prairie drought K. J. Brown, J. S. Clark, E. C. Grimm, J. J. Donovan, P. G. Mueller, B. C. S. Hansen, and I. Stefanova Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8865–8870. Published online 2005 June 13. doi: 10.1073/pnas.0503621102.PMCID: PMC1150278 Biological Sciences Applied Biological Sciences Nonviremic transmission of West Nile virus Stephen Higgs, Bradley S. Schneider, Dana L. Vanlandingham, Kimberly A. Klingler, and Ernest A. Gould Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8871–8874. Published online 2005 June 10. doi: 10.1073/pnas.0503835102.PMCID: PMC1157059 Biochemistry A cysteine-sulfinic acid in peroxiredoxin regulates H2O2-sensing by the antioxidant Pap1 pathway Ana P. Vivancos, Esther A. Castillo, Benoît Biteau, Carine Nicot, José Ayté, Michel B. Toledano, and Elena Hidalgo Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8875–8880. Published online 2005 June 13. doi: 10.1073/pnas.0503251102.PMCID: PMC1157045 Structural basis for ordered substrate binding and cooperativity in aspartate transcarbamoylase Jie Wang, Kimberly A. Stieglitz, James P. Cardia, and Evan R. Kantrowitz Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8881–8886. Published online 2005 June 10. doi: 10.1073/pnas.0503742102.PMCID: PMC1157055 Biophysics Atomic-scale dynamical structures of fatty acid bilayers observed by ultrafast electron crystallography Songye Chen, Marco T. Seidel, and Ahmed H. Zewail Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8854–8859. Published online 2005 June 14. doi: 10.1073/pnas.0504022102.PMCID: PMC1150297 DNA shuffling as a tool for protein crystallization Robert J. Keenan, Daniel L. Siehl, Rebecca Gorton, and Linda A. Castle Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8887–8892. Published online 2005 June 10. doi: 10.1073/pnas.0502497102.PMCID: PMC1149501 From the Cover: NMR study of a membrane protein in detergent-free aqueous solution Manuela Zoonens, Laurent J. Catoire, Fabrice Giusti, and Jean-Luc Popot Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8893–8898. Published online 2005 June 14. doi: 10.1073/pnas.0503750102.PMCID: PMC1157056 Multiple subsets of side-chain packing in partially folded states of α-lactalbumins K. Hun Mok, Toshio Nagashima, Iain J. Day, P. J. Hore, and Christopher M. Dobson Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8899–8904. Published online 2005 June 13. doi: 10.1073/pnas.0500661102.PMCID: PMC1157025 Cell Biology Recruitment of DNA methyltransferase I to DNA repair sites Oliver Mortusewicz, Lothar Schermelleh, Joachim Walter, M. Cristina Cardoso, and Heinrich Leonhardt Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8905–8909. Published online 2005 June 13. doi: 10.1073/pnas.0501034102.PMCID: PMC1157029 Swe1 regulation and transcriptional control restrict the activity of mitotic cyclins toward replication proteins in Saccharomyces cerevisiae Fangfang Hu and Oscar M. Aparicio Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8910–8915. Published online 2005 June 14. doi: 10.1073/pnas.0406987102.PMCID: PMC1157011 Developmental Biology Myocardin-related transcription factor B is required in cardiac neural crest for smooth muscle differentiation and cardiovascular development Jian Li, Xiaohong Zhu, Mary Chen, Lan Cheng, Deying Zhou, Min Min Lu, Kevin Du, Jonathan A. Epstein, and Michael S. Parmacek Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8916–8921. Published online 2005 June 10. doi: 10.1073/pnas.0503741102.PMCID: PMC1157054 Premature ovarian aging in mice deficient for Gpr3 Catherine Ledent, Isabelle Demeestere, David Blum, Julien Petermans, Tuula Hämäläinen, Guillaume Smits, and Gilbert Vassart Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8922–8926. Published online 2005 June 13. doi: 10.1073/pnas.0503840102.PMCID: PMC1150279 Environmental Sciences Climatically driven macroevolutionary patterns in the size of marine diatoms over the Cenozoic Zoe V. Finkel, Miriam E. Katz, James D. Wright, Oscar M. E. Schofield, and Paul G. Falkowski Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8927–8932. Published online 2005 June 14. doi: 10.1073/pnas.0409907102.PMCID: PMC1157017 Evolution From the Cover: Structure, function, and evolution of the tRNA endonucleases of Archaea: An example of subfunctionalization Giuseppe D. Tocchini-Valentini, Paolo Fruscoloni, and Glauco P. Tocchini-Valentini Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8933–8938. Published online 2005 June 3. doi: 10.1073/pnas.0502350102.PMCID: PMC1157037 Cultural transmission of tool use in bottlenose dolphins Michael Krützen, Janet Mann, Michael R. Heithaus, Richard C. Connor, Lars Bejder, and William B. Sherwin Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8939–8943. Published online 2005 June 9. doi: 10.1073/pnas.0500232102.PMCID: PMC1157020 Richness of plant–insect associations in Eocene Patagonia: A legacy for South American biodiversity Peter Wilf, Conrad C. Labandeira, Kirk R. Johnson, and N. Rubén Cúneo Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8944–8948. Published online 2005 June 13. doi: 10.1073/pnas.0500516102.PMCID: PMC1157024 Genetics Phenotype–genotype correlation in Hirschsprung disease is illuminated by comparative analysis of the RET protein sequence Carl S. Kashuk, Eric A. Stone, Elizabeth A. Grice, Matthew E. Portnoy, Eric D. Green, Arend Sidow, Aravinda Chakravarti, and Andrew S. McCallion Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8949–8954. Published online 2005 June 13. doi: 10.1073/pnas.0503259102.PMCID: PMC1157046 Medical Sciences The molecular basis of ferroportin-linked hemochromatosis Ivana De Domenico, Diane McVey Ward, Elizabeta Nemeth, Michael B. Vaughn, Giovanni Musci, Tomas Ganz, and Jerry Kaplan Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8955–8960. Published online 2005 June 13. doi: 10.1073/pnas.0503804102.PMCID: PMC1157058 Effects of threshold choice on biological conclusions reached during analysis of gene expression by DNA microarrays Kuang-Hung Pan, Chih-Jian Lih, and Stanley N. Cohen Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8961–8965. Published online 2005 June 10. doi: 10.1073/pnas.0502674102.PMCID: PMC1149502 Stem cells in the dog heart are self-renewing, clonogenic, and multipotent and regenerate infarcted myocardium, improving cardiac function Axel Linke, Patrick Müller, Daria Nurzynska, Claudia Casarsa, Daniele Torella, Angelo Nascimbene, Clotilde Castaldo, Stefano Cascapera, Michael Böhm, Federico Quaini, Konrad Urbanek, Annarosa Leri, Thomas H. Hintze, Jan Kajstura, and Piero Anversa Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8966–8971. Published online 2005 June 10. doi: 10.1073/pnas.0502678102.PMCID: PMC1157041 Dissociated phenotypes in presenilin transgenic mice define functionally distinct γ-secretases Peter Mastrangelo, Paul M. Mathews, M. Azhar Chishti, Stephen D. Schmidt, Yongjun Gu, Jing Yang, Matthew J. Mazzella, Janaky Coomaraswamy, Patrick Horne, Bob Strome, Heather Pelly, Georges Levesque, Chris Ebeling, Ying Jiang, Ralph A. Nixon, Richard Rozmahel, Paul E. Fraser, Peter St George-Hyslop, George A. Carlson, and David Westaway Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8972–8977. Published online 2005 June 10. doi: 10.1073/pnas.0500940102.PMCID: PMC1149500 Melanin photoprotection in the human retinal pigment epithelium and its correlation with light-induced cell apoptosis Brandon-Luke L. Seagle, Kourous A. Rezai, Yasuhiro Kobori, Elzbieta M. Gasyna, Kasra A. Rezaei, and James R. Norris, Jr. Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8978–8983. Published online 2005 June 10. doi: 10.1073/pnas.0501971102.PMCID: PMC1157035 In vivo formation and repair of DNA double-strand breaks after computed tomography examinations Markus Löbrich, Nicole Rief, Martin Kühne, Martina Heckmann, Jochen Fleckenstein, Christian Rübe, and Michael Uder Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8984–8989. Published online 2005 June 13. doi: 10.1073/pnas.0501895102.PMCID: PMC1150277 Microbiology Cytoskeletal rearrangements and cell extensions induced by the US3 kinase of an alphaherpesvirus are associated with enhanced spread Herman W. Favoreel, Geert Van Minnebruggen, Dirk Adriaensen, and Hans J. Nauwynck Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8990–8995. Published online 2005 June 10. doi: 10.1073/pnas.0409099102.PMCID: PMC1157013 The cysteine-rich region of respiratory syncytial virus attachment protein inhibits innate immunity elicited by the virus and endotoxin Fernando P. Polack, Pablo M. Irusta, Scott J. Hoffman, M. Paula Schiatti, Guillermina A. Melendi, M. Florencia Delgado, Federico R. Laham, Bhagvanji Thumar, R. Michael Hendry, Jose A. Melero, Ruth A. Karron, Peter L. Collins, and Steven R. Kleeberger Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 8996–9001. Published online 2005 June 14. doi: 10.1073/pnas.0409478102.PMCID: PMC1157014 Identification of a major restriction in HIV-1 intersubtype recombination Mario P. S. Chin, Terence D. Rhodes, Jianbo Chen, William Fu, and Wei-Shau Hu Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9002–9007. Published online 2005 June 14. doi: 10.1073/pnas.0502522102.PMCID: PMC1157039 Delays in Pseudomonas aeruginosa quorum-controlled gene expression are conditional Jeremy M. Yarwood, Esther M. Volper, and E. Peter Greenberg Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9008–9013. Published online 2005 June 13. doi: 10.1073/pnas.0503728102.PMCID: PMC1157053 Longitudinal analysis of the group A Streptococcus transcriptome in experimental pharyngitis in cynomolgus macaques Kimmo Virtaneva, Stephen F. Porcella, Morag R. Graham, Robin M. Ireland, Claire A. Johnson, Stacy M. Ricklefs, Imran Babar, Larye D. Parkins, Romina A. Romero, G. Judson Corn, Don J. Gardner, John R. Bailey, Michael J. Parnell, and James M. Musser Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9014–9019. Published online 2005 June 14. doi: 10.1073/pnas.0503671102.PMCID: PMC1150296 Reverse transcription-associated dephosphorylation of hepadnavirus nucleocapsids David H. Perlman, Eric A. Berg, Peter B. O'Connor, Catherine E. Costello, and Jianming Hu Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9020–9025. Published online 2005 June 10. doi: 10.1073/pnas.0502138102.PMCID: PMC1157036 Neuroscience Rapid plasticity of binocular connections in developing monkey visual cortex (V1) Bin Zhang, Hua Bi, Eiichi Sakai, Ichiro Maruko, Jianghe Zheng, Earl L. Smith, III, and Yuzo M. Chino Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9026–9031. Published online 2005 June 14. doi: 10.1073/pnas.0500280102.PMCID: PMC1150295 Time-varying covariance of neural activities recorded in striatum and frontal cortex as monkeys perform sequential-saccade tasks N. Fujii and A. M. Graybiel Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9032–9037. Published online 2005 June 14. doi: 10.1073/pnas.0503541102.PMCID: PMC1157048 P boutons in lamina IX of the rodent spinal cord express high levels of glutamic acid decarboxylase-65 and originate from cells in deep medial dorsal horn D. I. Hughes, M. Mackie, G. G. Nagy, J. S. Riddell, D. J. Maxwell, G. Szabó, F. Erdélyi, G. Veress, P. Szűcs, M. Antal, and A. J. Todd Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9038–9043. Published online 2005 June 9. doi: 10.1073/pnas.0503646102.PMCID: PMC1157050 Substance P inhibits progesterone conversion to neuroactive metabolites in spinal sensory circuit: A potential component of nociception Christine Patte-Mensah, Cherkaouia Kibaly, and Ayikoe G. Mensah-Nyagan Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9044–9049. Published online 2005 June 10. doi: 10.1073/pnas.0502968102.PMCID: PMC1157043 Pharmacology From the Cover: A heterodimer-selective agonist shows in vivo relevance of G protein-coupled receptor dimers Maria Waldhoer, Jamie Fong, Robert M. Jones, Mary M. Lunzer, Shiv K. Sharma, Evi Kostenis, Philip S. Portoghese, and Jennifer L. Whistler Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9050–9055. Published online 2005 June 2. doi: 10.1073/pnas.0501112102.PMCID: PMC1157030 Physiology Endothelial dihydrofolate reductase: Critical for nitric oxide bioavailability and role in angiotensin II uncoupling of endothelial nitric oxide synthase Karel Chalupsky and Hua Cai Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9056–9061. Published online 2005 June 7. doi: 10.1073/pnas.0409594102.PMCID: PMC1157015 Plant Biology Severe acute respiratory syndrome (SARS) S protein production in plants: Development of recombinant vaccine Natalia Pogrebnyak, Maxim Golovkin, Vyacheslav Andrianov, Sergei Spitsin, Yuriy Smirnov, Richard Egolf, and Hilary Koprowski Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9062–9067. Published online 2005 June 14. doi: 10.1073/pnas.0503760102.PMCID: PMC1157057 From the Cover: Gene movement by Helitron transposons contributes to the haplotype variability of maize Jinsheng Lai, Yubin Li, Joachim Messing, and Hugo K. Dooner Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9068–9073. Published online 2005 June 10. doi: 10.1073/pnas.0502923102.PMCID: PMC1157042 STRUBBELIG defines a receptor kinase-mediated signaling pathway regulating organ development in Arabidopsis David Chevalier, Martine Batoux, Lynette Fulton, Karen Pfister, Ram Kishor Yadav, Maja Schellenberg, and Kay Schneitz Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9074–9079. Published online 2005 June 10. doi: 10.1073/pnas.0503526102.PMCID: PMC1157047 Psychology Seeing what is not there shows the costs of perceptual learning Aaron R. Seitz, Jose E. Nanez, Steven R. Holloway, Shinichi Koyama, and Takeo Watanabe Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9080–9085. Published online 2005 June 13. doi: 10.1073/pnas.0501026102.PMCID: PMC1157028 Corrections Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9086. doi: 10.1073/pnas.0503695102.PMCID: PMC1157052 Corrects: Hongtao Zhao, et al. Detection and characterization of the product of hydroethidine and intracellular superoxide by HPLC and limitations of fluorescence. Proc Natl Acad Sci U S A. 2005 April 19; 102(16): 5727–5732. Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9086. doi: 10.1073/pnas.0504002102.PMCID: PMC1157062 Corrects: William J. Bruno, et al. Using independent open-to-closed transitions to simplify aggregated Markov models of ion channel gating kinetics. Proc Natl Acad Sci U S A. 2005 May 3; 102(18): 6326–6331. Proc Natl Acad Sci U S A. 2005 June 21; 102(25): 9086. doi: 10.1073/pnas.0504059102.PMCID: PMC1157066 Corrects: Xiaolan Zhao, et al. From the Cover: A SUMO ligase is part of a nuclear multiprotein complex that affects DNA repair and chromosomal organization. Proc Natl Acad Sci U S A. 2005 March 29; 102(13): 4777–4782. |