Partitioning of differently sized poly(ethylene glycol)s into OmpF porin.

Electrocatalytic Oxidation of Ethanol and Ethylene Glycol onto Poly (o-Anisidine)-Nickel Composite Electrode

In this work, poly (o-Anisidine) (POA) was prepared by consecutive potential cycling in an acidic monomer solution at the surface of Carbon Paste Electrode (CPE). Nickel ions were dispersed into the polymer by immersing the electrode in NiSO4 solution. The prepared Ni/POA/CPE was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, Atomic Force Mic...

Study of Surface Tension of Binary Mixtures of Poly (Ethylene Glycol) in Water and Poly (Propylene Glycol) in Ethanol and its Modeling Using Neural Network

Aqueous two-phase poly (ethylene glycol) – Maltodextrin system for protein partitioning from shrimp waste: Influence of molecular weight and pH

The polysaccharide maltodextrin (Mdx) can provide a low cost alternative to substitute the fractioned dextran for the use with polyethylene glycol (PEG) in aqueous two-phase polymer polymers systems. Aqueous two-phase system (ATPS) partitioning has been used to recover and concentrate proteins from Shrimp Waste and offers many advantages along with biomass removal. In this work we have studied ...

Crystal structures of the OmpF porin: function in a colicin translocon.

The OmpF porin in the Escherichia coli outer membrane (OM) is required for the cytotoxic action of group A colicins, which are proposed to insert their translocation and active domains through OmpF pores. A crystal structure was sought of OmpF with an inserted colicin segment. A 1.6 A OmpF structure, obtained from crystals formed in 1 M Mg2+, has one Mg2+ bound in the selectivity filter between...

The Effect of pH on the Liquid-liquid Equilibrium for a System Containing Polyethylene Glycol Di-methyl Ether and Tri-potassium Citrate and its Application for Acetaminophen Separation

In this work liquid-liquid equilibrium for aqueous two phase system composed of polyethylene glycol di-methyl ether and tri-potassium citrate at different medium pH values (6.00, 7.00 and 8.00) and 298.15 K was studied. The obtained results show that two phase area expanded with an increasing of pH values. The performances of the Merchuk and semi-empirical equations were tested in correlating t...