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Figure 3
(a) The aromatic portion of the spectrum of the collagen-like peptide Ac-(GPO)2GFOGER(GPO)3-NH2 is shown at 277, 288 and 298 K. The far left peak highlighted in this spectrum corresponds to the triple-helical form of the peptide and increases in abundance at lower temperatures. (b) Spectra of the same aromatic region at 298 K at varying protein:ligand (P:L) ratios is shown. The preferential broadening of the triple-helical form on protein addition is highlighted by the arrow.

Journal logoBIOLOGICAL
CRYSTALLOGRAPHY
ISSN: 1399-0047
Volume 63| Part 1| December 2007| Pages 62-71
doi:10.1107/S0907444906051869
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