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Nanometer to Millimeter Scale Peptide-Porphyrin Materials
2010
Biomacromolecules
AQ-Pal14 is a 30-residue polypeptide that was designed to form an R-helical coiled coil that contains a metalbinding 4-pyridylalanine residue on its solvent-exposed surface. However, characterization of this peptide shows that it exists as a three-stranded coiled coil, not a two-stranded one as predicted from its design. Reaction with cobalt(III) protoporphyrin IX (Co-PPIX) produces a six-coordinate Co-PPIX(AQ-Pal14) 2 species that creates two coiled-coil oligomerization domains coordinated to
doi:10.1021/bm100540t
pmid:20804210
pmcid:PMC2952671
fatcat:jeptfdc3ojgmbgel3htsymotsa