N-Lipidated Oligopeptides Immobilized on Cellulose as New Type of Organocatalysts

Author(s): Justyna Fraczyk, Beata Kolesinska, Zbigniew J. Kaminski

Journal Name: Combinatorial Chemistry & High Throughput Screening
Accelerated Technologies for Biotechnology, Bioassays, Medicinal Chemistry and Natural Products Research

Volume 16 , Issue 7 , 2013

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Abstract:

A library of supramolecular structures formed by self-organization of N-lipidated tripeptides, dipeptides and Nacylated amino acids attached to cellulose according to the TASP concept via aminophenylamino-1,3,5-triazine was synthesized and the catalytic activity of the structures was studied. Intensive catalytic activity in solvolysis of sterically hindered Z-Aib-Aib-ONp under ambient conditions was observed for structures bearing the catalytic triad as well as for structures with the peptide fragment shortened to a dipeptide or even a single Ser, Glu or His residue, but not for structures bearing alanine or phenylalanine residues. For all structures with a dipeptide or a single amino acid residue and for most of tripeptide structures the progress of solvolysis was stopped after the concentration of the nitrophenolate ion reached 0.5–0.7 x 10-4 M/L. Only in the case of catalysts with glutamic acid residues in the tripeptide fragment, solvolysis proceeded until all the substrate was consumed.

Keywords: Catalysis, chemzyme, organocatalysis, self-organization, supramolecular, α-methylalanine.

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Article Details

VOLUME: 16
ISSUE: 7
Year: 2013
Page: [562 - 571]
Pages: 10
DOI: 10.2174/1386207311316070006
Price: $65

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