He has achieved his most important results by use of spectroscopy: he has studied bioactive peptides with CD, NMR spectroscopy and molecular modelling.
The methyl ester of calostomal was subjected to NMR spectroscopy and was identified as all-trans-16-oxohexadeca-2,4,6,8,10,12,14-heptaenoic acid.
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The genome includes a conserved RNA structural element called a core encapsidation signal that directs packaging of RNA into the virion; the tertiary structure of this element has been solved using nuclear magnetic resonance spectroscopy.