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2005
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In the Laboratory
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Introduction to Biological Mass Spectrometry: Determining Identity and Species of Origin of Two Proteins
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Curt T. Reimann, Axel Mie, and Carina Nilsson
Department of Analytical Chemistry, Chenical Center, Lund University, SE-221 00 Lund, Sweden
Arieh Cohen
Department of Occupational and Environmental Medicine, University Hospital, Lund University, SE-221 85 Lund, Sweden
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August 2005
Vol. 82 No. 8
p. 1215
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| Abstract |
We describe a laboratory exercise that is designed to give advanced undergraduate students in analytical chemistry a meaningful introduction to biological mass spectrometry. We ask the students to solve a mystery: given two proteins, what are they, and from which animals do they originate? This exercise involves use of two mass spectrometers available in our institution: a fairly basic matrix-assisted laser desorption ionization time-of-flight (MALDI–TOF) unit and an electrospray ionization (ESI) ion-trap unit. Our exercise can be completed in two days (including analysis) and provides several interesting and educational surprises. The students, in small groups, are introduced to total mass measurement with ESI, proceed to peptide mass mapping with MALDI–TOF, and finally explore sequence information with ion-trap tandem (fragmentation) mass spectrometry. Even in the most advanced phase, we guide the students, but by this time they usually have their own ideas as to what avenues to pursue. We find that our students become excited after they solve the "mystery"of these proteins, and they receive enough education in the process to be able to join a research project involving biological mass spectrometry.
Featured on the Cover.
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| Supplement |
Instructions for the students and notes for the instructor are available.
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 Contents |
JCE2005p1215W.doc (Microsoft Word)
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| Download |
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| More Information |
Citation |
Reimann, Curt T.; Mie, Axel; Nilsson, Carina; Cohen, Arieh. J. Chem. Educ. 2005 82 1215.
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Keywords |
Analytical Chemistry; Bioanalytical Chemistry; Biochemistry; Graduate Education / Research; Hands-On Learning / Manipulatives; Instrumental Methods; Isotopes; Laboratory Instruction; Mass Spectrometry; Problem Solving / Decision Making; Proteins / Peptides; Upper-Division Undergraduate
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History |
Created:
Last Updated: |
July 5, 2005
July 8, 2005
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| Home > JCE Print > Journal of Chemical Education > Issues >
2005
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August
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1215
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