نتایج جستجو برای: antiparallel diode

تعداد نتایج: 23704  

1998
Jane S Merkel Lynne Regan

Results: Protein variants containing glycine and aromatic residues positioned across β strands in both antiparallel and parallel orientations were studied. The pairing of glycine and phenylalanine across antiparallel strands resulted in a synergistic increase in protein stability. Dramatic differences in stability were observed for the parallel β-sheet mutants, which were dependent upon the typ...

Journal: :CrystEngComm 2023

Selenium atoms in aromatic selenocyanates exhibit two sizeable σ-holes, leading to recurrent supramolecular organizations with chalcogen-bonded (ChB) chain-like motifs and antiparallel arrangement of the chains through weaker ChB.

Journal: :Journal of molecular biology 2001
B North C M Summa G Ghirlanda W F DeGrado

Antiparallel helical bundles are found in a wide range of proteins. Often, four-helical bundles form tube-like structures, with binding sites for substrates or cofactors near their centers. For example, a transmembrane four-helical bundle in cytochrome bc(1) binds a pair of porphyrins in an elongated central cavity running down the center of the structure. Antiparallel helical barrels with larg...

2009
S. Bolognesi M. Shifman

We study how fluxes on the domain wall world volume modify quantum fusion of two distant parallel domain walls into a composite wall. The elementary wall fluxes can be separated into parallel and antiparallel components. The parallel component affects neither the binding energy nor the process of quantum merger. The antiparallel fluxes, instead, increase the binding energy and, against naive ex...

Journal: :journal of lasers in medical sciences 0
ehsan azma nassimeh safavi laser application in medical sciences research center, shahid beheshti university of medical sciences, tehran, iran

introduction: diode laser with wavelengths ranging from 810 to 980 nm in a continuous or pulsed mode was used as a possible instrument for soft tissue surgery in the oral cavity. discussion: diode laser is one of laser systems in which photons are produced by electric current with wavelengths of 810, 940 and 980nm. the application of diode laser in soft tissue oral surgery has been evaluated fr...

Journal: :Chemistry & biology 2000
R Sha F Liu D P Millar N C Seeman

BACKGROUND The four arms of the Holliday junction are known to stack in pairs forming two helical domains whose orientations are antiparallel, but twisted positively by about 60 degrees, based on electrophoretic, FRET and AFM measurements. Recent gel retardation studies suggest that a bowtie junction (containing 5',5' and 3',3' linkages in its crossover strands) may adopt a parallel conformatio...

2016
Hideaki Shimizu Haruko Miyazaki Noboru Ohsawa Shisako Shoji Yoshiko Ishizuka-Katsura Asako Tosaki Fumitaka Oyama Takaho Terada Kensaku Sakamoto Mikako Shirouzu Shun-ichi Sekine Nobuyuki Nukina Shigeyuki Yokoyama

The β1, β2, and β4 subunits of voltage-gated sodium channels reportedly function as cell adhesion molecules. The present crystallographic analysis of the β4 extracellular domain revealed an antiparallel arrangement of the β4 molecules in the crystal lattice. The interface between the two antiparallel β4 molecules is asymmetric, and results in a multimeric assembly. Structure-based mutagenesis a...

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