Results 81 to 90 of about 266,478 (309)

Carboxyl groups and the proton pump of bacteriorhodopsin [PDF]

Biochemical Society Transactions, 1984
Chemical modification and spin-labeled studies of purple membranes isolated from Halobacterium halobium have provided the first evidence for buried carboxyl residues within the hydrophobic, membrane-protein domains. Spin label data showed that modification of buried carboxyl residues resulted in loss of protein activity.
Herz, J.M., Packer, L.
openaire   +3 more sources

Endothelial Cells Angiogenesis in Sulfated Glycosaminoglycan (GAG) Hydrogels Enhanced by Bioactive Glass‐Released Ions

Advanced Functional Materials, EarlyView.
A mechanically tunable hydrogel composed of gelatin, chondroitin sulfate and laminin promotes angiogenesis in vitro without the supplement of growth factors. Endothelial cells morphogenesis was further enhanced by medium conditioned with bioactive glass 58S‐released ions (Ca and Si), thus offering a promising strategy to vascularize 3D tissue ...
Marco Piazzoni, Ilaria Borghi, Francesca Cadamuro, Sophia Dalfino, Riccardo Campanile, Sofia Nizzolo, Valeria Cassina, Francesca Tallia, Julian R. Jones, Francesco Mantegazza, Sabrina Bertini, Lorenzo Moroni, Francesco Nicotra, Laura Russo   +13 more
wiley   +1 more source

(2SR,4aSR,8aSR)-6-Oxoperhydronaphthalene-2-carboxylic acid

Acta Crystallographica Section E, 2009
In the title racemic compound, C11H16O3, the molecule adopts a conformation that places its carboxyl group in an equatorial position. Molecules aggregate by hydrogen-bond pairing of carboxyl groups, yielding centrosymmetric dimers that are arranged into ...
Georgia Efthimiopoulos, Mark Davison, Roger A. Lalancette, Hugh W. Thompson   +3 more
doaj   +1 more source

Amine functionalization of cholecyst-derived extracellular matrix with generation 1 PAMAM dendrimer [PDF]

, 2008
This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Biomacromolecules, copyright © American Chemical Society after peer review.
Angele P., Babensee J. E., Badylak S., Badylak S. F., Badylak S. F., Badylak S. F., Billiar K., Brody S., Burugapalli K., Buttafoco L., Chandrasekar D., Charulatha V., Chen R. R., Coburn J. C., Curotto E., Domanski D. M., Duan X., Duan X., Duan X., DuBay D. A., Dumas P., Ferrando J. M., Garcia Y., Grinnell F., Henry J. A., Hodde J., Hodde J. P., Ko R., Kochupura P. V., Koizumi N. J., Lee J. M., Lee S. H., Liang H. C., Ma L., Ma Z., Malafaya P. B., McDevitt C. A., McKegney M., Meinert M., Najlah M., Nourse A., Olde Damink L. H., Olde Damink L. H., Osborne C. S., Papagiannaros A., Pek Y. S., Pieper J. S., Saito H., Sokolsky-Papkov M., Tabata Y., Tessmar J. K., Unsworth J. M., van Wachem P. B., van Wachem P. B., van Wachem P. B., Voytik-Harbin S. L., Wissink M. J., Wissink M. J., Wolkers W. F., Yee N., Zhong S., Zilla P.   +61 more
core   +1 more source

Stoma‐Shell Nanoarchitecture for Enhanced Plasma Confinement Catalysis in Synthesis of Ethanol from CO2

Advanced Functional Materials, EarlyView.
High‐energy electron impact in plasma catalysis often causes excessive dissociation of active intermediates, limiting C2+ product selectivity. To address this challenge, a bio‐inspired stoma‐shell nanoarchitecture is designed to decouple electron impact from catalytic reaction zones.
Nan Zou, Zhiliang Dong, Tsun‐Kong Sham, Xiaonian Li, Ying Zheng, Ting Qiu   +5 more
wiley   +1 more source

(E)-2-(2-Fluorobenzylidene)butanoic acid

Acta Crystallographica Section E, 2008
In the crystal structure of the title compound, C11H11FO2, the methine CH forms an intramolecular hydrogen bond with the carboxyl O atom. The molecules form dimers through hydrogen bonding between carboxyl groups. These dimers are linked to each other by
Islam Ullah Khan, Saqib Ali, Zia-ur-Rehman, M. Nawaz Tahir, Muhammad Niaz   +4 more
doaj   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Structural changes in lipid-free humic acids during composting of sewage sludge [PDF]

, 2005
Structural changes in humic acids (HAs), extracted after lipid removal from sewage sludge during composting, were investigated using various chemical methods (elemental analysis, Fourier transform infrared spectroscopy and 13C-nuclear magnetic resonance
Amir, Soumia, Hafidi, Mohamed, Merlina, Georges, Revel, Jean-Claude   +3 more
core   +3 more sources

Ionic‐Electronic Hydrogel‐Liquid Metal Composite Bilayer with Tissue‐Adaptive and Adhesive Properties for Closed‐Loop Neuroprosthetic System

Advanced Functional Materials, EarlyView.
A hydrogel–liquid metal composite peripheral nerve interface (HLB‐PNI) combines electrically durable electrodes and tissue‐adhesive hydrogel for tissue‐adaptive implantation. In nerve‐injured rats, it enables the diagnosis of sensory‐motor connectivity via stimulation and neural signal recording.
Yewon Kim, Kyoungryong Kim, Jaehyon Kim, Heewon Choi, Mikyung Shin, Donghee Son   +5 more
wiley   +1 more source

Impact of carboxylic acid structure on α-hemihydrate gypsum crystal morphology and mechanical strength

Frontiers in Physics
This study investigated the synthesis of α-hemihydrate gypsum (α-HH) through semi-liquid autoclaving of phosphogypsum (PG) using various carboxylic acids as modifying agents. The impact of carboxyl group spatial location, auxiliary functional group type,
Guo-gang Li, Guo-gang Li, Guo-gang Li, Jin-e Liu, Liang Ma, Hao-lei Gong, Su-hong Yin   +6 more
doaj   +1 more source