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Application of Plasma Desorption Mass Spectrometry to Molecular Weight Determination of Structural Protein from Insect Cuticle

Roepstorff, P. (author)
Department of Molecular Biology, Odense University, Denmark
Højrup, P. (author)
Department of Molecular Biology, Odense University, Denmark
Sundqvist, B.U.R. (author)
Tandem Accelerator Laboratory, Uppsala University
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Jonsson, Gunnar (author)
Tandem Accelerator Laboratory, Uppsala University
Håkansson, P. (author)
Tandem Accelerator Laboratory, Uppsala University
Andersson, S. O. (author)
Institute for Biological Chemistry A, University of Copenhagen, Denmark
Johansson, K. E. (author)
Mycoplasma Laboratory, The National Veterinary Institute, Uppsala
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 (creator_code:org_t)
Wiley, 1986
1986
English.
In: Journal of Mass Spectrometry. - : Wiley. - 1076-5174 .- 1096-9888. ; 13:12, s. 689-691
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • During sequence determination of a structural protein from the cuticle of the migratory locust, Locusta migratoria, a discrepancy was found between the molecular weight calculated from the sequence data (15 323) and that estimated by SDS-gel electrophoresis (21 600). The protein contains several repeated sequences, and the discrepancy might indicate that part of the sequence was missing or that the protein contained a large prosthetic group. The molecular weight of the protein was determined by 127I-plasma desorption mass spectrometry to be 15 329±50 which confirms the sequence data and shows the molecular weight determination based on SDS-electrophoresis to be too high.

Subject headings

NATURVETENSKAP  -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)

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