Document Detail

Optimization of poly(N-isopropylacrylamide) as an artificial amidase.
MedLine Citation:
PMID:  25488109     Owner:  NLM     Status:  Publisher    
Poly(N-isopropylacrylamide) microgel (NMG) has been developed by adding various functional groups to control surface charges, hydrophobicity, pKa and protein adsorption capacity. Here, we developed and optimized NMG anchored with three types of functional groups as a polymeric catalyst to hydrolyze amide bonds under optimized mild conditions. Various optimization strategies were evaluated for effi-cient hydrolysis activity on a p-nitroaniline-based substrate by using a colorimetric assay. Based on the results, we propose a mechanism to hydrolyze amide bonds and determine the theoretical average dis-tance, using NMG bearing functional group of 1-vinylimidazole as the study model. The hydrolysis of amide bonds was inhibited by a transition-state protease inhibitor, which also confirmed the proposed reaction model for NMG. These results provide an insight into the strategies developed to functionalize hydrogels through an enzyme-mimic approach for future robust bio- and chemical conversions as well as therapeutic utilities.
Yoke-Ming Wong; Yu Hoshino; Kumar Sudesh; Yoshiko Miura; Keiji Numata
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-12-8
Journal Detail:
Title:  Biomacromolecules     Volume:  -     ISSN:  1526-4602     ISO Abbreviation:  Biomacromolecules     Publication Date:  2014 Dec 
Date Detail:
Created Date:  2014-12-9     Completed Date:  -     Revised Date:  2014-12-10    
Medline Journal Info:
Nlm Unique ID:  100892849     Medline TA:  Biomacromolecules     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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