Exchangeable hydrogens in proteins can be identified by comparison of nuclear magnetic resonance spectra obtained in H(2)O and in D(2)O. In oxymyoglobin and myoglobin we have been able to observe resonances of the NH protons of the two tryptophans, as well as one resonance from arginine and one from histidine in the range -10 to -15 ppm downfield from 3-(trimethylsilyl)propanesulfonic acid (sod...

UNLABELLED In this work we present a detailed study on the influence of surface modifications for luminescent silver (Ag) clusters. Ag clusters (25 atoms) capped with dihydrolipoic acid show a distinct absorbance spectrum with several sharp transitions, and relative broad deep red luminescence with a quantum yield of 5% combined with a remarkably long luminescence lifetime of ~3 μs at room temp...

The original limited proteolysis approach was proposed for large (multidomain) proteins with post-translational modifications for obtaining of their novel fragments. It was realized for human immunoglobulins representing two subclasses IgG2 and IgG3. This approach was based on two techniques: masking of protein regions which are normally susceptible to proteolytic enzymes and increasing the pos...

Herein the modifications of a glassy carbon electrode (GCE) with palladium nanoparticles and a palladium film are reported. The response to hydrogen peroxide on the modified electrode was examined using cyclic voltammetry and amperometry (at –0.2 V vs. Ag/AgCl reference electrode in the phosphate buffer solution, pH 7.4). The palladium film and palladium nanoparticle-modified GCE showed a linea...

Unprecedented adsorption of chlorpyrifos (CP), endosulfan (ES), and malathion (ML) onto graphene oxide (GO) and reduced graphene oxide (RGO) from water is reported. The observed adsorption capacities of CP, ES, and ML are as high as ~1200, 1100, and 800 mg g(-1) , respectively. Adsorption is found to be insensitive to pH or background ions. The adsorbent is reusable and can be applied in the fi...

In this work a prioritized multiobjective model predictive control configuration for nonlinear processes is proposed. The process is modeled by an adaptive radial basis function neural network so that modifications through time can be identified. The different control targets are formulated in a multiobjective optimization problem which is solved using a prioritized evolutionary algorithm. The ...

Antibodies were generated against the positively charged chair-like glycosidase inhibitor nojirimycin by in vitro immunization. A number of catalytic antibodies were isolated, one of which catalyzes the hydrolysis of p-nitrophenyl beta-D-glucopyranoside 3 with a rate enhancement (kcat/kuncat) of 10(5) M over the HOAC-catalyzed reaction. The antibody discriminates modifications in the pyranoside...

Reversible posttranslational protein modifications form the mechanistic basis for the reception and propagation of biological signals in cells. Besides other modifications such as phosphorylation, acetylation, ADP-ribosylation, and ubiquitylation, reduction-oxidation (redox) processes allow reversible structure-function modulation of proteins, which serve as molecular on-off switches in cell bi...