Mass spectrum of DS lysozyme enzyme

Mass spectrum of DS lysozyme enzyme

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Credit: JAMES HOLMES/OXFORD CENTRE FOR MOLECULAR SCIENCES/SCIENCE PHOTO LIBRARY

Caption: Mass spectrum of the enzyme DS lysozyme, displayed on the computer screen of a VG BIO-Q mass spectrometer used for protein analysis at Oxford University. Mass spectrometers are used to identify chemical compounds by exploiting the behaviour of their molecular ions in magnetic & electric fields. Samples in liquid form are injected into the machine in background. Inside, the substance is ionised by bombardment from high- energy electrons. Variable electric and magnetic fields are used to accelerate & deflect the ions towards a detector.

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Keywords: by mass spec, display, enzyme, lysozyme, mass, mass spectrometer, mass spectrum, mass spectrum of, molecular mass, ms, of lysozyme, protein analysis, proteomics, relative molecular mass, spectrometer

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