Sensor array based determination of Edman degradated amino acids using poly(p-phenyleneethynylene)s
A cross-reactive optical sensor array based on poly(p-phenyleneethynylene)s (PPEs) determines Edman degraded amino acids. We report a sensor array composed of three anionic PPEs P1-P3, and their electrostatic complexes with metal ions (Fe2+, Cu2+, Co2+). We recorded distinct fluorescence intensity r...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2020
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| In: |
Chemistry - a European journal
Year: 2020, Volume: 26, Issue: 35, Pages: 7779-7782 |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.202001262 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/chem.202001262 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.202001262 
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| Author Notes: | Hao Zhang, Benhua Wang, Kai Seehafer, and Uwe H.F. Bunz |
| Summary: | A cross-reactive optical sensor array based on poly(p-phenyleneethynylene)s (PPEs) determines Edman degraded amino acids. We report a sensor array composed of three anionic PPEs P1-P3, and their electrostatic complexes with metal ions (Fe2+, Cu2+, Co2+). We recorded distinct fluorescence intensity response patterns as “fingerprints” of this chemical tongue toward standard phenylthiohydantoin (PTH) amino acids—degradation products of the Edman process. These “fingerprints” were converted into canonical scores by linear discrimination analysis (LDA), which differentiates all of the PTH-amino acids. This array discriminates PTH-amino acid residues degraded from an oligopeptide through Edman sequencing. This approach is complementary to chromatography approaches which rely on mass spectrometry; our array offers the advantage of simplicity. |
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| Item Description: | First published: 17 March 2020 Gesehen am 16.11 |
| Physical Description: | Online Resource |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.202001262 |