Synthesis and Physico-Chemical Properties of Some Novel Amino Acid Azo Fe(II) Complexes

2003 ◽  
Vol 33 (6) ◽  
pp. 1081-1104 ◽  
Author(s):  
Ali Shaker ◽  
Mohamed Shaker Adam
Keyword(s):  
Amino Acid ◽  
Chemical Properties ◽  
Physico Chemical

Amino acid composition and physico-chemical properties of bluefin tuna (Thunnus thynnus) myoglobin

1978 ◽  
Vol 60 (2) ◽  
pp. 195-199 ◽  
Author(s):  
Ciro Balestrieri ◽  
Giovanni Colonna ◽  
Alfonso Giovane ◽  
Gaetano Irace ◽  
Luigi Servillo ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Chemical Properties ◽  
Bluefin Tuna ◽  
Thunnus Thynnus ◽  
Physico Chemical

scholarly journals Porin from Marine Bacterium Marinomonas primoryensis KMM 3633T: Isolation, Physico-Chemical Properties, and Functional Activity

Molecules ◽  
2020 ◽  
Vol 25 (14) ◽  
pp. 3131
Author(s):  
Olga D. Novikova ◽  
Valentina A. Khomenko ◽  
Natalia Yu. Kim ◽  
Galina N. Likhatskaya ◽  
Lyudmila A. Romanenko ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Lipid Membranes ◽  
Marine Bacterium ◽  
Chemical Properties ◽  
Cell Permeability ◽  
Oligomeric Structure ◽  
Black Lipid Membranes ◽  
Physico Chemical ◽  
Coastal Sea

Marinomonas primoryensis KMM 3633T, extreme living marine bacterium was isolated from a sample of coastal sea ice in the Amursky Bay near Vladivostok, Russia. The goal of our investigation is to study outer membrane channels determining cell permeability. Porin from M. primoryensis KMM 3633T (MpOmp) has been isolated and characterized. Amino acid analysis and whole genome sequencing were the sources of amino acid data of porin, identified as Porin_4 according to the conservative domain searching. The amino acid composition of MpOmp distinguished by high content of acidic amino acids and low content of sulfur-containing amino acids, but there are no tryptophan residues in its molecule. The native MpOmp existed as a trimer. The reconstitution of MpOmp into black lipid membranes demonstrated its ability to form ion channels whose conductivity depends on the electrolyte concentration. The spatial structure of MpOmp had features typical for the classical gram-negative porins. However, the oligomeric structure of isolated MpOmp was distinguished by very low stability: heat-modified monomer was already observed at 30 °C. The data obtained suggest the stabilizing role of lipids in the natural membrane of marine bacteria in the formation of the oligomeric structure of porin.

scholarly journals Tryptophan, an Amino-Acid Endowed with Unique Properties and Its Many Roles in Membrane Proteins

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1032
Author(s):  
Sonia Khemaissa ◽  
Sandrine Sagan ◽  
Astrid Walrant
Keyword(s):  
Amino Acid ◽  
Membrane Proteins ◽  
Hydrogen Bonds ◽  
Membrane Protein ◽  
Lipid Bilayers ◽  
Noncovalent Interactions ◽  
Chemical Properties ◽  
Protein Stabilization ◽  
Physico Chemical

Tryptophan is an aromatic amino acid with unique physico-chemical properties. It is often encountered in membrane proteins, especially at the level of the water/bilayer interface. It plays a role in membrane protein stabilization, anchoring and orientation in lipid bilayers. It has a hydrophobic character but can also engage in many types of interactions, such as π–cation or hydrogen bonds. In this review, we give an overview of the role of tryptophan in membrane proteins and a more detailed description of the underlying noncovalent interactions it can engage in with membrane partners.

scholarly journals Synthesis and Physico-Chemical Properties of New Tetraethylammonium-Based Amino Acid Chiral Ionic Liquids

Molecules ◽  
2010 ◽  
Vol 15 (4) ◽  
pp. 2388-2397 ◽  
Author(s):  
Mohd Basyaruddin Abdul Rahman ◽  
Khairulazhar Jumbri ◽  
Mahiran Basri ◽  
Emilia Abdulmalek ◽  
Kamaliah Sirat ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Chemical Properties ◽  
Chiral Ionic Liquids ◽  
Physico Chemical
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