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The human urinary proteome: combinational approaches to comprehensive mapping

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  • Biology


The development methodologies for the assessment of the protein content of biological samples have been in the ‘eye of the storm’ in proteomics for almost two decades. The work of Zerefos et al. is a continuation of this trend, focusing on analysis of urinary proteins using a combination of separation methodologies. In this work, the authors employ a previously analyzed control urine sample. Three different methodologies are presented, involving the combination of classical separation approaches, such as SDS-PAGE, preparative electrophoresis and liquid chromatography and standard mass spectrometer instrumentation. Several hundred proteins were reported following the application of a typical proteomics workflow and the use of a data meta-analysis platform to enhance the credibility of the final output. This is also established through cross-method (within this study) as well as cross-study (comparison of this with other main studies in the field) data comparisons. Emphasis is placed on the presentation of experimental identifiers as well as information provided at the peptide level.

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