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Journal Article

Metaproteome analysis of sewage sludge from membrane bioreactors

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Rapp,  E.
Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Reichl,  U.
Otto-von-Guericke-Universität Magdeburg;
Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Max Planck Society;

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Citation

Kuhn, R., Benndorf, D., Rapp, E., Reichl, U., Palese, L., & Pollice, A. (2011). Metaproteome analysis of sewage sludge from membrane bioreactors. Proteomics, 11(13), 2738-2744. doi:10.1002/pmic.201000590.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-8D74-A
Abstract
Microbial dynamics and enzymatic activities of activated sludge processes are not completely understood yet. A better understanding about the biology is indispensable for further process optimization. Since proteins play a key role as catalysts in sludge processes, a protocol for protein extraction and analysis by 2-D PAGE was established. It is based on phenol extraction of alkaline extracts and on a subsequent precipitation with ammonium sulphate. 2-D protein patterns obtained from different sludges collected from membrane bioreactors showed – besides common spots – significant differences. Selected proteins were identified with nano-HPLC-ESI-MS/MS. All membrane biological reactor (MBR) sludge samples investigated in this study contained elastase 3A, which implies that this human serine protease is a significant constituent of municipal wastewater. Although the identification of proteins from ammonia-oxidizing bacterium Nitrosomonas europaea was expected, the detection of a protein with homology to the marine bacterium Saprospira grandis in MBR1 was surprising. copyright 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim [accessed July 28th 2011]