( ) 7 Non-polar Amino Acids 6种极性但不带电荷的氨基酸 ( ) 6 Polar, Uncharged Amino Acids 3种极性带负电荷的氨基酸 ( 3 Polar, Negatively Charged Amino Acids) 3种极性带正电荷的氨基酸 ( 3 Polar, Negatively Charged Amino Acids) 3种芳香族氨基酸 ( ) 3 Aromatic Amino Acids 几种常见的非...
Polar (Ser, Thr, Cys, Asn, and Gln) amino acids and Gly were found to have significantly larger helical propensities at several C-terminal positions compared with the -helix center (-1.0 kcal/mole in some cases). Some of the nonpolar residues, especially -branched ones (Val and Ile) are...
Using the Poisson-Boltzmann solvation model, the implicit models are well designed to reasonably predict the hydration free energies of polar solutes. The implicit model, however, is known to have shortcomings in estimating those for non-polar aromatic compounds. To investigate a cause of error, ...
In the catalytical kinase domain, the W239R mutant leads to substitution of tryptophan (a nonpolar aromatic amino acid) by arginine (a basic amino acid). Although the mutated residue is smaller in size than the wild-type residue, it is likely to disturb the interaction between other domains t...
While semisynthetic methods leveraging the functional groups found in polar and aromatic amino acids have been extensively explored, highly selective and general approaches to transform unactivated C–H bonds in aliphatic amino acids remain less developed4,5. Here we disclose a stepwise dehydrogenative ...
Non-volatile and polar drugs are not easily removed in water by the current technologies applied in wastewater sector because the current technologies do not carter for organic and inorganic pollutant removal; therefore, they are retained in various aquatic systems [30]. Furthermore, the use of ...
4.19). Emulsifiers can be ionic, having positively or negatively charged polar head groups, or nonionic. Sodium dodecyl sulfate (SDS) is a common example of an ionic emulsifier. Ethoxylated compounds, such as the commonly used nonylphenol ethoxylate (NPE), are made from reaction of starting ...
However, in non-polar media phenol radical ... R Hermann,T Leichtner,S Naumov,... - Elsevier B.V. 被引量: 0发表: 2004年 Excited state chemistry of aromatic amino acids and related peptides. III. Tryptophan Femto- and nanosecond photoionization of sterically hindered phenols in non-protic...
victoria GFP from which the two N-terminal amino acid residues have been removed. Several of these fluorescent proteins contain different aromatic amino acids within the central chromophore and fluoresce at a distinctly shorter wavelength than the wild type GFP species. For example, the engineered ...
Lin, J., Lv, Y., Song, K.et al.Cleavage of non-polar C(sp2)‒C(sp2) bonds in cycloparaphenylenes via electric field-catalyzed electrophilic aromatic substitution.Nat Commun14, 293 (2023). https://doi.org/10.1038/s41467-022-35686-4 ...