Results 221 to 230 of about 4,300 (261)

A general treatment of helix-coil equilibria in macromolecular systems

Journal of Molecular Biology, 1966
Statistical mechanical methods recently developed for treating the properties of linear chains are here applied to helix-coil equilibria in systems of single-strand (polypeptide) and double-strand (polynucleotide) helices. Chains of any finite length and copolymeric chains comprising units having different helix-forming tendencies can be treated ...
P J, Flory, W G, Miller
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bHLHDB: A next generation database of basic helix loop helix transcription factors based on deep learning model

Journal of Bioinformatics and Computational Biology, 2022
The basic helix loop helix (bHLH) superfamily is a large and diverse protein family that plays a role in various vital functions in nearly all animals and plants. The bHLH proteins form one of the largest families of transcription factors found in plants that act as homo- or heterodimers to regulate the expression of their target genes.
Ali Burak Öncül, Yüksel Çelik, Necdet Mehmet Ünel, Mehmet Cengiz Baloglu   +3 more
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Properties of plasmas generated by a sheath-helix antenna

IEEE Conference Record - Abstracts. PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference (Cat. No.01CH37255), 2002
Summary form only given. A theoretical model of the plasmas generated by a sheath-helix antenna is developed for axisymmetric perturbations. The system configuration consists of a cylindrical plasma column inside a dielectric tube of radius R. The eigenvalue equation is obtained inside the plasma column and the eigenfunction is identified as the Bessel
H.S. Uhm, S.H. Uhm, H.-Y. Chang
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General Classes and Functions of Four-Helix Bundle Cytokines

1998
Publisher Summary The 4α-helical cytokines are the dominant regulators of hemopoietic cell development and the state of activation of the effector cells of innate and acquired resistance to infections. They also play major roles in the regulation of whole body metabolism, physiology, and the response to pregnancy.
N A, Nicola, D J, Hilton
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The Evolution of Technology Generations and Associated Markets: A Double Helix Model

IEEE Transactions on Engineering Management, 2004
Studies analyzing the impact of technological innovations on how an industry develops focus on the different effects produced by radical innovations versus incremental innovations. The studies either examine the technology cycles or the market development cycles in isolation without really explaining the interaction between the two.
R. Balachandra, Marv Goldschmitt, John H. Friar   +2 more
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Interactions between heterologous helix-loop-helix proteins generate complexes that bind specifically to a common DNA sequence

Cell, 1989
A DNA binding and dimerization motif, with apparent amphipathic helices (the HLH motif), has recently been identified in various proteins, including two that bind to immunoglobulin enhancers (E12 and E47). We show here that various HLH proteins can bind as apparent heterodimers to a single DNA motif and also, albeit usually more weakly, as apparent ...
Cornelis Murre, Patrick Schonleber McCaw, H. Vaessin, M. Caudy, L.Y. Jan, Y.N. Jan, Carlos V. Cabrera, Jean N. Buskin, Stephen D. Hauschka, Andrew B. Lassar, Harold Weintraub, David Baltimore   +11 more
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Dispersion relation in plasmas generated by a sheath-helix antenna

Journal of Applied Physics, 2002
A theoretical model of the plasmas generated by a sheath-helix antenna is developed for axisymmetric perturbations. The system configuration consists of a cylindrical plasma column inside a dielectric tube of radius Rc. The eigenvalue equation is obtained and the eigenfunction is identified as the Bessel function J0(x) of the first kind of order zero ...
Uhm, HS, Uhm, SH, Chang, HY Chang, Hong-Young   +2 more
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The Differential Geometry of the General Helix as Applied to Mechanical Springs

Journal of Applied Mechanics, 1988
In order to improve the performance of helical springs, such as increasing the fatigue life and suppressing resonance, variable pitch angle and variable helix radius may be incorporated into the helical spring geometry. Employing the tool of differential geometry, new and complete formulae of curvature, torsion, and spring force are derived.
Yuyi Lin, Albert P. Pisano
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Sites of action potential generation in Helix pomatia neurons

Neurophysiology, 1988
The site of action potential generation in unipolar snail neurons was identified by stimulating neurons isolated together with the initial portion of the process from the neuropile. Stimulation consisted of a sinusoidal from electrical current passed along the soma-axonal axis in saline solution.
V. N. Ierusalimskii, P. M. Balaban
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Mechanisms of Generation of Pacemaker Activity by Identified Helix Neurons

Neurophysiology, 2001
We studied the mechanisms of generation of pacemaker activity in identified neurons of Helix pomatia. For this purpose, we isolated the PPa2 and PPa7 neurons generating spontaneous rhythmic monomodal activity and PPa1 neuron with bursting activity. It was demonstrated that isolated PPa2 and PPa7 cells produce endogenous rhythmic activity that was not ...
N. I. Kononenko, O. V. Kostyuchenko
openaire   +1 more source