Advances in High Pressure Bioscience and Biotechnology II: by K. Heremans (auth.), Professor Dr. Roland Winter (eds.)

By K. Heremans (auth.), Professor Dr. Roland Winter (eds.)

At current, there's a transforming into curiosity in excessive strain bioscience and

biotechnology. The actions are approximately both disbursed between

fundamental learn and functions. With unique paintings on

biochemistry, biophysics, marine and terrestrial micobiology,

pharmacology, foodstuff technological know-how and different functions, this publication covers the

whole variety of present excessive strain bioscience. Advances in High

Pressure Bioscience and Biotechnology should be welcomed via all academic

and business researchers who're operating during this field.

The following themes are lined:

High strain results on proteins and macromolecules

High strain results on polyelectrolytes, DNA, RNA

High strain results on lipids and biomembranes

High strain and enzymatic reactions

High strain microbiology

High strain nutrients technological know-how and nutrients technology

High strain functions in bioscience, pharmacy, and medicine

High strain ideas

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Extra info for Advances in High Pressure Bioscience and Biotechnology II: Proceedings of the 2nd International Conference on High Pressure Bioscience and Biotechnology, Dortmund, September 16–19, 2002

Example text

De Abstract. Oligomeric proteins generally tend to dissociate under pressure, while aggregation is often observed in the pressure-denatured state. We report on a pressure-induced association of native myoglobin in the lowpressure regime. Depending on solvent conditions, the monomer becomes unstable above a critical pressure. The association process involves an initial lag phase due to seed formation, an intermediate reversible oligomeric state and a final structurally altered precipitate. Using static and dynamic light scattering, we discuss the kinetics of association, the effect of pH, temperature and buffer conditions on the stability limit.

Schulte Materials and Methods Horse skeletal muscle met-myoglobin was obtained from Sigma and dissolved in 100 mM phosphate-buffer using a protein-concentration of 50 —M (1 mg/ml) for the light scattering experiments and 8 —M for the spectroscopic studies. The sample was centrifuged at 20000 g and used without further purification. Controls were performed using material purified by ceramic hydroxyl apatit. The association process under pressure was monitored by static and dynamic light scattering (ALV-Laser GmbH, Langen) in a thermostated SITEC high-pressure cell.

111, 5568 (1999). V. Madison, K. D. Kopple, J. Am. Chem. Soc. 102, 4855 (1980). T. Imai, M. Kinoshita, F. Hirata, J. Chem. Phys. 112, 9469 (2000). M. Kinoshita, T. Imai, A. Kovalenko, F. Hirata, Chem. Phys. Lett. 348, 337 (2001). T. Imai, Y. Harano, A. Kovalenko, F. Hirata, Biopolymers. 59, 512 (2001). High Pressure as Tool to Study Structural Properties of Thiolate Heme Proteins C. Jung1, B. C. de Abstract. A membrane driven high-pressure cell with sapphire anvils is used to measure the CO ligand stretch mode of various substrate complexes of cytochrome P450cam.

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