Solvent accessibility

In this work, we replaced the conventional solvents such as dimethyl sulfoxide (DMSO) or dimethylformamide (DMF) by deep eutectic solvents (DES) in the synthesis of methylammonium lead iodide perovskite (MAPbI3). The first DES system was based on the combination of acetamide and urea (A–U–P system), the homogenous solution was formed at relative low temperature (~40℃). For the second system which was based on acetamide and choline chloride (A–C–P system), lead nitrate only dissolved at higher temperature (~100℃).

6p dianmotminh02 03-05-2024 4 2   Download

The molecular self-diffusion coefficients were accessed, for the first time, in solutions of microcrystalline cellulose, dissolved in 30 wt% and 55 wt% aqueous tetrabutylammonium hydroxide, TBAH (aq), and in mixtures of 40 wt% TBAH (aq) with an organic co-solvent, dimethylsulfoxide (DMSO), through pulsed field gradient stimulated echo NMR measurements.

9p vihermione 30-12-2022 48 2   Download

The Urea-Hydrogen Peroxide complex (UHP) was synthesized from urea and hydrogen peroxide, characterized by FT-IR. This UHP complex could be employed as an oxidizing agent for metal-free oxidation reaction of disulfides to thiosulfinate compounds. This protocol was carried out under very mild conditions at 0oC in CH3CO2H solvent, was efficient and compatible with a range of alkyl, aryl or allyl disulfides to afford direct access to thiosulfinate compounds in very good yields up to 92% and high selectivities.

8p cothumenhmong11 05-05-2021 12 1   Download

As genome sequencing is becoming routine in biomedical research, the total number of protein sequences is increasing exponentially, recently reaching over 108 million. However, only a tiny portion of these proteins (i.e. ~75,000 or < 0.07%) have solved tertiary structures determined by experimental techniques.

12p viwyoming2711 16-12-2020 11 1   Download

Protein solvent accessibility prediction is a pivotal intermediate step towards modeling protein tertiary structures directly from one-dimensional sequences. It also plays an important part in identifying protein folds and domains.

11p vioklahoma2711 19-11-2020 15 2   Download

Most of hydrophilic and hydrophobic residues are thought to be exposed and buried in proteins, respectively. In contrast to the majority of the existing studies on protein folding characteristics using protein structures, in this study, our aim was to design predictors for estimating relative solvent accessibility (RSA) of amino acid residues to discover protein folding characteristics from sequences.

12p vioklahoma2711 19-11-2020 6 1   Download

Direct prediction of the three-dimensional (3D) structures of proteins from one-dimensional (1D) sequences is a challenging problem. Significant structural characteristics such as solvent accessibility and contact number are essential for deriving restrains in modeling protein folding and protein 3D structure.

10p viconnecticut2711 29-10-2020 11 1   Download

Cys341 of carboxypeptidase Y, which constitutes one side of the solvent-accessible surface of the S1 binding pocket, was replaced with Gly, Ser, Asp, Val, Phe or His by site-directed mutagenesis. Kinetic analysis, using Cbz-dipeptide substrates, revealed that polar amino acids at the 341 position increased Km whereas hydrophobic amino acids in this position tended to decrease Km.

6p system191 01-06-2013 38 3   Download

Substitution oftrans-proline at three positions in ubiquitin (residues 19, 37 and 38) produces significant context-dependent effects on protein stability (both stabilizing and destabilizing) that reflect changes to a combination of parameters including backbone flexibility, hydrophobic interactions, solvent accessibility to polar groups and intrinsic backbone conformational preferences. Kinetic analysis of thewild-type yeast protein reveals a predominant fast-folding phase which conforms to an apparent two-state folding model. ...

11p awards 05-04-2013 47 2   Download

For example, because of their different jobs and schedules, women and men may be exposed to toxins in different amounts and levels. In South Africa, women are exposed more often to pesticides during planting and harvesting and men during application (London et al., 2002; Kisting in WHO, 2005). Men’s jobs in factories can involve higher exposure than women’s to toluene, a chemical solvent that can cause various problems to the reproductive and nervous systems (Neubert et al., 2001).

90p le_minh_nha 18-12-2012 76 6   Download

Canales et al. Organic and Medicinal Chemistry Letters 2011, 1:9 http://www.orgmedchemlett.com/content/1/1/9 SHORT COMMUNICATION Open Access Bismuth nitrate pentahydrate-induced novel nitration of eugenol Luis Canales†, Debasish Bandyopadhyay† and Bimal K Banik* Abstract Background: Eugenol, the main constituent of clove oil possesses a number of medicinal activities. To enhance the medicinal property, structural modification is required.

3p dauphong13 10-02-2012 56 4   Download

Kataoka et al. AMB Express 2011, 1:10 http://www.amb-express.com/content/1/1/10 ORIGINAL Open Access Development of butanol-tolerant Bacillus subtilis strain GRSW2-B1 as a potential bioproduction host Naoya Kataoka1, Takahisa Tajima1, Junichi Kato1, Wanitcha Rachadech2 and Alisa S Vangnai 2,3* Abstract As alternative microbial hosts for butanol production with organic-solvent tolerant trait are in high demands, a butanol-tolerant bacterium, Bacillus subtilis GRSW2-B1, was thus isolated.

11p dauphong13 10-02-2012 51 5   Download

Kang et al. Nanoscale Research Letters 2011, 6:363 http://www.nanoscalereslett.com/content/6/1/363 NANO EXPRESS Open Access Design process of the nanofluid injection mechanism in nuclear power plants Myoung-suk Kang1, Changhyun Jee1, Sangjun Park1, In Choel Bang2 and Gyunyoung Heo1* Abstract Nanofluids, which are engineered suspensions of nanoparticles in a solvent such as water, have been found to show enhanced coolant properties such as higher critical heat flux and surface wettability at modest concentrations, which is a useful characteristic in nuclear power plants (NPPs).

10p dauphong13 09-02-2012 42 5   Download