Results 61 to 70 of about 5,252,785 (363)

Archaeal protein containing domain of unknown function 2193 undergoes oligomeric reconfiguration upon iron–sulfur cluster binding

FEBS Letters, EarlyView.
This work presents the characterization of MvoDUF2193, a Methanococcus voltae (Mvo) protein from the domain of unknown function (DUF) 2193 family. We demonstrate that MvoDUF2193 binds a single [4Fe–4S] cluster per subunit and that cluster occupancy regulates the transition from an apo tetramer to a [4Fe–4S] monomeric form. This structural transition is
Emily M. Dieter, James Larson, Monika Tokmina‐Lukaszewska, Jin Xiong, Jared Green, Yisong Guo, William E. Broderick, Brian Bothner, Joan B. Broderick   +8 more
wiley   +1 more source

Looking for Emergence in Physics

Phenomenology and Mind, 2017
Despite its recent popularity, Emergence is still a field where philosophers and physicists often talk past each other. In fact, while philosophical discussions focus mostly on ontological emergence, physical theory is inherently limited to the ...
Joana Rigato
doaj   +1 more source

New Challenges For Wind Shock Models: The Chandra Spectrum Of The Hot Star Delta Orionis [PDF]

, 2002
The Chandra spectrum of delta Ori A shows emission lines from hydrogen- and helium-like states of Si, Mg, Ne, and O, along with N VII Lyalpha and lines from ions in the range Fe XVII-Fe XXI In contrast to the broad lines seen in zeta Pup and zeta Ori ...
Cassinelli, J. P., Cohen, David H., MacFarlane, J. J., Miller, N. A., Waldron, W. L.   +4 more
core   +2 more sources

Numerical Modeling Of Hohlraum Radiation Conditions: Spatial And Spectral Variations Due To Sample Position, Beam Pointing, And Hohlraum Geometry [PDF]

, 2005
View-factor simulations are presented of the spatially varying radiation conditions inside double-ended gold Hohlraums and single-ended gold Hohlraums (\u27\u27 halfraums \u27\u27) used in inertial confinement fusion and high-energy density physics ...
David H. Cohen, Joseph J. MacFarlane, Otto L. Landen, Paisner J. A.   +3 more
core   +3 more sources

Redox‐dependent binding and conformational equilibria govern the fluorescence decay of NAD(P)H in living cells

FEBS Letters, EarlyView.
In this work, we reveal how different enzyme binding configurations influence the fluorescence decay of NAD(P)H in live cells using time‐resolved anisotropy imaging and fluorescence lifetime imaging microscopy (FLIM). Mathematical modelling shows that the redox states of the NAD and NADP pools govern these configurations, shaping their fluorescence ...
Thomas S. Blacker, Nimit Mistry, Nicoletta Plotegher, Elizabeth R. Westbrook, Michael D. E. Sewell, John Carroll, Gyorgy Szabadkai, Angus J. Bain, Michael R. Duchen   +8 more
wiley   +1 more source

Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells

FEBS Letters, EarlyView.
Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan, Victoria Scarpelli, Marten Exterkate   +2 more
wiley   +1 more source

Physics and complexity [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2010
This paper is concerned with complex macroscopic behaviour arising in many-body systems through the combinations of competitive interactions and disorder, even with simple ingredients at the microscopic level. It attempts to indicate and illustrate the richness that has arisen, in conceptual understanding, in methodology and in application, across a ...
openaire   +6 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

X-Ray Emission-Line Profile Modeling Of O Stars: Fitting A Spherically Symmetric Analytic Wind-Shock Model To The Chandra Spectrum Of Zeta Puppis [PDF]

, 2003
X-ray emission-line profiles provide the most direct insight into the dynamics and spatial distribution of the hot, X-ray-emitting plasma above the surfaces of OB stars. The O supergiant zeta Puppis shows broad, blueshifted, and asymmetric line profiles,
Cohen, David H., Kramer, Roban Hultman, , \u2703, Owocki, S. P.   +2 more
core   +1 more source

KELT-20b: A Giant Planet With A Period Of P ~ 3.5 Days Transiting The V ~ 7.6 Early A Star HD 185603 [PDF]

, 2017
We report the discovery of KELT-20b, a hot Jupiter transiting a early A star, HD 185603, with an orbital period of days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the ...
Beatty, T. G., Berlind, P., Bieryla, A., Calchi Novati, S., Calkins, M. L., Ciardi, D. R., Cohen, David H., Collins, K. A., Colón, K. D., Corfini, G., DePoy, D. L., Dressing, C., Eastman, J. D., Esquerdo, G. A., Fulton, B. J., Gagnon, P., Gaudi, B. S., Gonzales, E., Gould, A., Gregorio, J., James, D., Jensen, Eric L.N., Johnson, J. A., Johnson, M. C., Johnson, S. A., Joner, M. D., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lund, M. B., Marshall, J. L., McCrady, N., McLeod, K. K., Oberst, T. E., Oelkers, R. J., Patel, R., Penev, K., Pepper, J., Quinn, S. N., Relles, H., Rodriguez, J. E., Sergi, A., Siverd, R. J., Sliski, D. H., Stassun, K. G., Stephens, D. C., Stevens, D. J., Stockdale, C., Trueblood, M., Trueblood, P., Villanueva, S., Jr., Wilson, M., Wittenmyer, R. A., Wright, J., Zambelli, R., Zhou, G.   +56 more
core   +3 more sources