Results 21 to 30 of about 4,300 (261)

General helices that lie on the sphere $S^{2n}$ in Euclidean space $E^{2n+1}$

Universal Journal of Mathematics and Applications, 2018
In this work, we give two methods to generate general helices that lie on the sphere  $S^{2n}$ in Euclidean (2n+1)-space $E^{2n+1}$.
Bülent Altunkaya, Levent Kula
doaj   +1 more source

Structural basis of antifreeze activity of a bacterial multi-domain antifreeze protein. [PDF]

PLoS ONE, 2017
Antifreeze proteins (AFPs) enhance the survival of organisms inhabiting cold environments by affecting the formation and/or structure of ice. We report the crystal structure of the first multi-domain AFP that has been characterized.
Chen Wang, Svetlana Pakhomova, Marcia E Newcomer, Brent C Christner, Bing-Hao Luo   +4 more
doaj   +1 more source

Some new types of associated curves in Euclidean 3-space

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018
In this paper, we introduce the concept of D-direction curve and C- direction curve of a given curve using the alternative frame –N,C,W} in Euclidean 3-space.
Özdoğan Sibel, Tuncer O. Oğulcan, Gök İsmail, Yaylı Yusuf   +3 more
doaj   +1 more source

Double stranded antiferromagnetic helix as an efficient spin filter

Results in Physics, 2023
We report a large degree of spin filtration in a double stranded (ds) antiferromagnetic helix (AFH) system. Generally spin channel separation is not possible when a magnetic system possesses a vanishing net magnetization.
Debjani Das Gupta, Santanu K. Maiti, Laura M. Pérez, Judith Helena Ojeda Silva, David Laroze   +4 more
doaj   +1 more source

Modeling of Self-Assembled Peptide Nanotubes and Determination of Their Chirality Sign Based on Dipole Moment Calculations

Nanomaterials, 2021
The chirality quantification is of great importance in structural biology, where the differences in proteins twisting can provide essentially different physiological effects.
Vladimir Bystrov, Alla Sidorova, Aleksey Lutsenko, Denis Shpigun, Ekaterina Malyshko, Alla Nuraeva, Pavel Zelenovskiy, Svitlana Kopyl, Andrei Kholkin   +8 more
doaj   +1 more source

Exploring Flexibility of Progesterone Receptor Ligand Binding Domain Using Molecular Dynamics. [PDF]

PLoS ONE, 2016
Progesterone receptor (PR), a member of nuclear receptor (NR) superfamily, plays a vital role for female reproductive tissue development, differentiation and maintenance.
Liangzhen Zheng, Valerie Chunling Lin, Yuguang Mu   +2 more
doaj   +1 more source

Evidence-Based Structural Model of the Staphylococcal Repressor Protein: Separation of Functions into Different Domains. [PDF]

PLoS ONE, 2015
Horizontal transfer of mobile genetic elements within Staphylococci is of high biomedical significance as such elements are frequently responsible for virulence and toxic effects.
Kinga Nyíri, Bianka Kőhegyi, András Micsonai, József Kardos, Beata G Vertessy   +4 more
doaj   +1 more source

A Miniaturized Dual-Orbital-Angular-Momentum (OAM)–Mode Helix Antenna

IEEE Access, 2018
Traditional helix antenna is firstly modified to radiate orbital angular momentum (OAM) wave, which has a compact size and an outstanding gain. Firstly, general principle of generating OAM by helix antenna is introduced.
Dang Weiguo, Zhu Yongzhong, Yu Yang, Zuo Kaiwei   +3 more
doaj   +1 more source

Discovery of novel helix binding sites at protein-protein interfaces

Computational and Structural Biotechnology Journal, 2019
Protein-protein interactions (PPIs) play a key role in numerous biological processes. Many efforts have been undertaken to develop PPI modulators for therapeutic applications; however, to date, most of the peptide binders designed to target PPIs are ...
Wei Yang, Xiangyu Sun, Changsheng Zhang, Luhua Lai   +3 more
doaj   +1 more source

ON THE ANATOMY OF THE HELIX AMPULLA OF BENSON, AND ITS GENERIC POSITION IN THE ARIOPHANTINÆ [PDF]

Journal of Molluscan Studies, 1901
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources