scholarly journals 1P112 The effect of Triton X-100 to the Schiff base and two dimensional crystalline structure of Natronobacterium pharaonis halorhodopsin

2004 ◽  
Vol 44 (supplement) ◽  
pp. S57
Author(s):  
T. Sasaki ◽  
M. Demura ◽  
T. Aizawa ◽  
K. Nitta
Keyword(s):  
Schiff Base ◽  
Crystalline Structure ◽  
Two Dimensional ◽  
Triton X ◽  
Natronobacterium Pharaonis

The extracellular matrix of echinoderm and amphibian eggs: Visualization in quick-frozen, deep-etched, and rotary-shadowed specimens

1990 ◽  
Vol 48 (3) ◽  
pp. 60-61
Author(s):  
Barry Bonnell ◽  
Carolyn Larabell ◽  
Douglas Chandler
Keyword(s):  
Extracellular Matrix ◽  
Plasma Membrane ◽  
Sea Urchin ◽  
Crystalline Structure ◽  
Cortical Granule ◽  
Two Dimensional ◽  
Small Peptides ◽  
Deep Etching ◽  
Quick Freezing ◽  
Acrosomal Reaction

Eggs of many species including those of echinoderms, amphibians and mammals exhibit an extensive extracellular matrix (ECM) that is important both in the reception of sperm and in providing a block to polyspermy after fertilization.In sea urchin eggs there are two distinctive coats, the vitelline layer which contains glycoprotein sperm receptors and the jelly layer that contains fucose sulfate glycoconjugates which trigger the acrosomal reaction and small peptides which act as chemoattractants for sperm. The vitelline layer (VL), as visualized by quick-freezing, deep-etching, and rotary-shadowing (QFDE-RS), is a fishnet-like structure, anchored to the plasma membrane by short posts. Orbiting above the VL are horizontal filaments which are thought to anchor the thicker jelly layer to the egg. Upon fertilization, the VL elevates and is transformed by cortical granule secretions into the fertilization envelope (FE). The rounded casts of microvilli in the VL are transformed into angular peaks and the envelope becomes coated inside and out with sheets of paracrystalline protein having a quasi-two dimensional crystalline structure.

Stability progress of perovskite solar cells dependent on the crystalline structure: From 3D ABX3 to 2D Ruddlesden–Popper perovskite absorbers

2019 ◽  
Vol 7 (11) ◽  
pp. 5898-5933 ◽  
Author(s):  
Farzaneh Arabpour Roghabadi ◽  
Maryam Alidaei ◽  
Seyede Maryam Mousavi ◽  
Tahereh Ashjari ◽  
Ali Shokrolahzadeh Tehrani ◽  
...  
Keyword(s):  
Solar Cells ◽  
Crystalline Structure ◽  
Perovskite Solar Cells ◽  
Two Dimensional ◽  
3 Dimensional

This review presents the progress of the change of the PSK structure from 3 dimensional CH3NH3PbX3 to mixed cations or halides based PSKs and finally to Ruddlesden–Popper PSK two dimensional (2D) homologous structures regarding the lifetime improvement.

Interactions between protonated retinal schiff base and various counter ions: A study by two-dimensional NOE NMR spectroscopy

1987 ◽  
Vol 25 (1) ◽  
pp. 21-24 ◽  
Author(s):  
Rodolfo Ghirlando ◽  
Elisha Berman ◽  
Timor Baasov ◽  
Mordechai Sheves
Keyword(s):  
Schiff Base ◽  
Nmr Spectroscopy ◽  
Two Dimensional ◽  
Counter Ions

The Protonated Schiff Base of Halorhodopsin from Natronobacterium pharaonis is Hydrolyzed at Elevated Temperatures

2006 ◽  
Vol 82 (6) ◽  
pp. 1414-1421
Author(s):  
Keren Mevorat-Kaplan ◽  
Vlad Brumfeld ◽  
Martin Engelhard ◽  
Mordechai Sheves
Keyword(s):  
Schiff Base ◽  
Elevated Temperatures ◽  
Natronobacterium Pharaonis

scholarly journals Hirshfeld Surface Investigation of Intermolecular Interaction of N-Aroyl-N’-(2-pyridyl)thiourea Derivatives

2021 ◽  
Vol 15 ◽  
pp. 1-7
Author(s):  
Rafie Draman
Keyword(s):  
Surface Investigation ◽  
Detailed Analysis ◽  
Intermolecular Interaction ◽  
Intermolecular Interactions ◽  
Crystalline Structure ◽  
Hirshfeld Surface ◽  
Two Dimensional ◽  
Thiourea Derivatives ◽  
Fingerprint Plots ◽  
Hirshfeld Surfaces

A detailed analysis of the intermolecular interactions of the crystalline structure of thiourea derivatives namely 1-(3-Methylbenzoyl)-3-(6-methyl-2-pyridyl)-thiourea, N-(2-Furoyl)-N’-(6-methyl-2-pyridyl)thiourea, 2-Methyl-N-[(3-methyl-2-pyridyl)-carbamothioyl]benzamide and 1-(4-Chlorobenzoyl)-3-(3-methylpyridin-2-yl)thiourea have been performed based on the Hirshfeld surfaces and their associated two-dimensional fingerprint plots. The result showed that the structures were stabilized by H···H, H···S, O···H, N···H, C–H···π, and π···π intermolecular interactions, which contribute mostly to the packing of the species in the crystal. The three largest contributions to the packing of the molecules in the crystals were provided by H···H, C–H···S and C··· H intermolecular interactions.

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