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Journal articleHideg E, Deak Z, Hakala-Yatkin M, et al., 2011,
Pure forms of the singlet oxygen sensors TEMP and TEMPD do not inhibit Photosystem II
, BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, Vol: 1807, Pages: 1658-1661, ISSN: 0005-2728- Author Web Link
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- Citations: 35
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Journal articleLossi NS, Dajani R, Freemont P, et al., 2011,
Structure-function analysis of HsiF, a gp25-like component of the type VI secretion system, in Pseudomonas aeruginosa
, MICROBIOLOGY-SGM, Vol: 157, Pages: 3292-3305, ISSN: 1350-0872- Author Web Link
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- Citations: 38
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Journal articleJamal SM, Ferrari G, Ahmed S, et al., 2011,
Evolutionary analysis of serotype A foot-and-mouth disease viruses circulating in Pakistan and Afghanistan during 2002-2009
, JOURNAL OF GENERAL VIROLOGY, Vol: 92, Pages: 2849-2864, ISSN: 0022-1317- Author Web Link
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- Citations: 40
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Journal articleDe Simone A, Montalvao RW, Vendruscolo M, 2011,
Determination of Conformational Equilibria in Proteins Using Residual Dipolar Couplings
, JOURNAL OF CHEMICAL THEORY AND COMPUTATION, Vol: 7, Pages: 4189-4195, ISSN: 1549-9618- Author Web Link
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- Citations: 34
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Journal articleMoscoso JA, Mikkelsen H, Heeb S, et al., 2011,
The Pseudomonas aeruginosa sensor RetS switches Type III and Type VI secretion via c-di-GMP signalling
, ENVIRONMENTAL MICROBIOLOGY, Vol: 13, Pages: 3128-3138, ISSN: 1462-2912- Author Web Link
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- Citations: 185
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Journal articleFitzpatrick AE, Lincoln CN, van Wilderen LJ, et al., 2011,
Pump-Dump-Probe and Pump-Repump-Probe Ultrafast Spectroscopy Resolves Cross Section of an Early Ground State Intermediate and Stimulated Emission in the Photoreactions of the Pr Ground State of the Cyanobacterial Phytochrome Cph1.
, The Journal of Physical Chemistry BThe primary photoreactions of the red absorbing ground state (Pr) of the cyanobacterial phytochrome Cph1 from Synechocystis PC 6803 involve C15=C16 Z-E photoisomerisation of its phycocyanobilin chromophore. The first observable ground state intermediate in pump-probe measurements of the photocycle, 'Lumi-R', is formed with picosecond kinetics, and involves excited state decay reactions that have 3 and 14 ps time constants. Here, we have studied the photochemical formation of the Lumi-R intermediate using multi pulse picosecond visible spectroscopy. Pump-dump-probe (PDP) and pump-repump-probe (PRP) experiments were carried out by employing two femtosecond visible pulses with 1, 14 and 160 ps delays, together with a broadband dispersive visible probe. The time delays between the two excitation pulses have been selected to allow interaction with the dominant (3 and 14 ps) kinetic phases of Lumi-R formation. The frequency dependence of the PDP and PRP amplitudes was investigated at 620 nm, 640 nm, 660 nm and 680 nm, covering excited state absorption (λmax = 620 nm), ground state absorption (λmax = 660 nm) and stimulated emission (λmax = 680 nm) cross sections. Experimental double difference transient absorbance signals (∆∆OD), from the PDP and PRP measurements required corrections to remove contributions from ground state repumping. The sensitivity of the resulting ∆∆OD signals was systematically investigated for possible connectivity schemes and photochemical parameters. When applying a homogeneous (sequentially decaying) connectivity scheme in both the 3 and 14 ps kinetic phases, evidence for repumping of an intermediate that has an electronic ground state configuration (GSI) is taken from the dump-induced S1 formation with 620, 640 and 660 nm wavelengths and 1 and 14 ps repump delays. Evidence for repumping a GSI is also seen, for the same excitation wavelengths, when imposing a target connectivity scheme proposed in refs1,2 for the 1 ps repump d
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Journal articleBolanos-Garcia VM, Lischetti T, Matak-Vinkovic D, et al., 2011,
Structure of a Blinkin-BUBR1 Complex Reveals an Interaction Crucial for Kinetochore-Mitotic Checkpoint Regulation via an Unanticipated Binding Site
, STRUCTURE, Vol: 19, Pages: 1691-1700, ISSN: 0969-2126- Author Web Link
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- Citations: 59
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Journal articleBriegel A, Beeby M, Thanbichler M, et al., 2011,
Activated chemoreceptor arrays remain intact and hexagonally packed
, Mol. Microbiol., Vol: 82, Pages: 748-757 -
Journal articleLou H, Chen M, Black SS, et al., 2011,
Altered Antibiotic Transport in OmpC Mutants Isolated from a Series of Clinical Strains of Multi-Drug Resistant E. coli
, PLOS ONE, Vol: 6, ISSN: 1932-6203- Author Web Link
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- Citations: 75
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Journal articleBoudjemline A, Saridakis E, Swann MJ, et al., 2011,
Use of Dual Polarization Interferometry as a Diagnostic Tool for Protein Crystallization
, ANALYTICAL CHEMISTRY, Vol: 83, Pages: 7881-7887, ISSN: 0003-2700- Author Web Link
- Open Access Link
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- Citations: 12
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Journal articleYu X-J, Liu M, Matthews S, et al., 2011,
Tandem Translation Generates a Chaperone for the Salmonella Type III Secretion System Protein SsaQ
, JOURNAL OF BIOLOGICAL CHEMISTRY, Vol: 286, Pages: 36098-36107- Author Web Link
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- Citations: 27
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Journal articleSheppard C, Camara B, Shadrin A, et al., 2011,
Reprint of: Inhibition of Escherichia coli RNAp by T7 Gp2 protein: Role of Negatively Charged Strip of Amino Acid Residues in Gp2
, JOURNAL OF MOLECULAR BIOLOGY, Vol: 412, Pages: 832-841, ISSN: 0022-2836- Cite
- Citations: 3
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Journal articleWoermann ME, Reichmann NT, Malone CL, et al., 2011,
Proteolytic Cleavage Inactivates the Staphylococcus aureus Lipoteichoic Acid Synthase
, JOURNAL OF BACTERIOLOGY, Vol: 193, Pages: 5279-5291, ISSN: 0021-9193- Author Web Link
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- Citations: 68
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Journal articleShaw RK, Lasa I, Garcia BM, et al., 2011,
Cellulose mediates attachment of Salmonella enterica Serovar Typhimurium to tomatoes
, ENVIRONMENTAL MICROBIOLOGY REPORTS, Vol: 3, Pages: 569-573, ISSN: 1758-2229- Author Web Link
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- Citations: 17
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Journal articleParambil JV, Schaepertoens M, Williams DR, et al., 2011,
Effects of Oscillatory Flow on the Nucleation and Crystallization of Insulin
, CRYSTAL GROWTH & DESIGN, Vol: 11, Pages: 4353-4359, ISSN: 1528-7483- Author Web Link
- Open Access Link
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- Citations: 34
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Journal articleHare S, Smith SJ, Metifiot M, et al., 2011,
Structural and Functional Analyses of the Second-Generation Integrase Strand Transfer Inhibitor Dolutegravir (S/GSK1349572)
, MOLECULAR PHARMACOLOGY, Vol: 80, Pages: 565-572, ISSN: 0026-895X- Author Web Link
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- Citations: 192
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Journal articleMuangman S, Korbsrisate S, Muangsombut V, et al., 2011,
BopC is a type III secreted effector protein of Burkholderia pseudomallei
, FEMS MICROBIOLOGY LETTERS, Vol: 323, Pages: 75-82, ISSN: 0378-1097- Author Web Link
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- Citations: 12
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Book chapterHare S, Engelman A, Cherepanov P, 2011,
HIV-1 Integrase: Mechanism and Inhibitor Design
, HIV-1 Integrase, Editors: Neamati, Publisher: Wiley, ISBN: 9780470184745This book comprehensively covers the mechanisms of action and inhibitor design for HIV-1 integrase. It serves as a resource for scientists facing challenging drug design issues and researchers in antiviral drug discovery.
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Journal articleSalgado PS, Yan R, Taylor JD, et al., 2011,
Structural basis for the broad specificity to host-cell ligands by the pathogenic fungus Candida albicans
, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 108, Pages: 15775-15779, ISSN: 0027-8424- Author Web Link
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- Citations: 57
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Journal articleFillet S, Krell T, Morel B, et al., 2011,
Intramolecular signal transmission in a tetrameric repressor of the IclR family
, Proceedings of the National Academy of Sciences of USA, Vol: 37, Pages: 15372-15377 -
Journal articleTaylor JD, Zhou Y, Salgado PS, et al., 2011,
Atomic Resolution Insights into Curli Fiber Biogenesis
, STRUCTURE, Vol: 19, Pages: 1307-1316, ISSN: 0969-2126- Author Web Link
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- Citations: 65
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Journal articleCorrigan RM, Abbott JC, Burhenne H, et al., 2011,
c-di-AMP Is a New Second Messenger in Staphylococcus aureus with a Role in Controlling Cell Size and Envelope Stress
, PLOS PATHOGENS, Vol: 7, ISSN: 1553-7366- Author Web Link
- Open Access Link
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- Citations: 298
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Journal articleClements A, Smollett K, Lee SF, et al., 2011,
EspG of enteropathogenic and enterohemorrhagic E. coli binds the Golgi matrix protein GM130 and disrupts the Golgi structure and function
, CELLULAR MICROBIOLOGY, Vol: 13, Pages: 1429-1439, ISSN: 1462-5814- Author Web Link
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- Citations: 30
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Journal articleHo R, Dilworth SE, Williams DR, et al., 2011,
Role of Surface Chemistry and Energetics in High Shear Wet Granulation
, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 50, Pages: 9642-9649, ISSN: 0888-5885- Author Web Link
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- Citations: 30
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Journal articleStewart PDS, Kolek SA, Briggs RA, et al., 2011,
Random Microseeding: A Theoretical and Practical Exploration of Seed Stability and Seeding Techniques for Successful Protein Crystallization
, CRYSTAL GROWTH & DESIGN, Vol: 11, Pages: 3432-3441, ISSN: 1528-7483- Author Web Link
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- Citations: 61
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Journal articleXia G, Corrigan RM, Winstel V, et al., 2011,
Wall Teichoic Acid-Dependent Adsorption of Staphylococcal Siphovirus and Myovirus
, JOURNAL OF BACTERIOLOGY, Vol: 193, Pages: 4006-4009, ISSN: 0021-9193- Author Web Link
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- Citations: 102
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Journal articleKwek JW, Vakarelski IU, Ng WK, et al., 2011,
Novel parallel plate condenser for single particle electrostatic force measurements in atomic force microscope
, COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, Vol: 385, Pages: 206-212, ISSN: 0927-7757- Author Web Link
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- Citations: 14
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Journal articleFilloux A, 2011,
Protein secretion systems in Pseudomonas aeruginosa: an essay on diversity, evolution, and function
, Frontiers in Microbiology, Vol: 2, ISSN: 1664-302XProtein secretion systems are molecular nanomachines used by Gram-negative bacteria to thrive within their environment. They are used to release enzymes that hydrolyze complex carbon sources into usable compounds, or to release proteins that capture essential ions such as iron. They are also used to colonize and survive within eukaryotic hosts, causing acute or chronic infections, subverting the host cell response and escaping the immune system. In this article, the opportunistic human pathogen Pseudomonas aeruginosa is used as a model to review the diversity of secretion systems that bacteria have evolved to achieve these goals. This diversity may result from a progressive transformation of cell envelope complexes that initially may not have been dedicated to secretion. The striking similarities between secretion systems and type IV pili, flagella, bacteriophage tail, or efflux pumps is a nice illustration of this evolution. Differences are also needed since various secretion configurations call for diversity. For example, some proteins are released in the extracellular medium while others are directly injected into the cytosol of eukaryotic cells. Some proteins are folded before being released and transit into the periplasm. Other proteins cross the whole cell envelope at once in an unfolded state. However, the secretion system requires conserved basic elements or features. For example, there is a need for an energy source or for an outer membrane channel. The structure of this review is thus quite unconventional. Instead of listing secretion types one after each other, it presents a melting pot of concepts indicating that secretion types are in constant evolution and use basic principles. In other words, emergence of new secretion systems could be predicted the way Mendeleïev had anticipated characteristics of yet unknown elements.
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Journal articleSedoud A, Cox N, Sugiura M, et al., 2011,
Semiquinone-iron complex of photosystem II: EPR signals assigned to the low-field edge of the ground state doublet of QA•-Fe2+ and QB•-Fe2+.
, Biochemistry, Vol: 50, Pages: 6012-6021The quinone-iron complex of the electron acceptor complex of Photosystem II was studied by EPR spectroscopy in Thermosynechococcus elongatus. New g ∼ 2 features belonging to the EPR signal of the semiquinone forms of the primary and secondary quinone, i.e., Q(A)(•-)Fe(2+) and Q(B)(•-)Fe(2+), respectively, are reported. In previous studies, these signals were missed because they were obscured by the EPR signal arising from the stable tyrosyl radical, TyrD(•). When the TyrD(•) signal was removed, either by chemical reduction or by the use of a mutant lacking TyrD, the new signals dominated the spectrum. For Q(A)(•-)Fe(2+), the signal was formed by illumination at 77 K or by sodium dithionite reduction in the dark. For Q(B)(•-)Fe(2+), the signal showed the characteristic period-of-two variations in its intensity when generated by a series of laser flashes. The new features showed relaxation characteristics comparable to those of the well-known features of the semiquinone-iron complexes and showed a temperature dependence consistent with an assignment to the low-field edge of the ground state doublet of the spin system. Spectral simulations are consistent with this assignment and with the current model of the spin system. The signal was also present in Q(B)(•-)Fe(2+) in plant Photosystem II, but in plants, the signal was not detected in the Q(A)(•-)Fe(2+) state.
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Journal articleLuther PK, Winkler H, Taylor K, et al., 2011,
Direct visualization of myosin-binding protein C bridging myosin and actin filaments in intact muscle
, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 108, Pages: 11423-11428, ISSN: 0027-8424- Author Web Link
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- Citations: 116
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