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Thioester analogues of peptidoglycan fragment MurNAc-L-Ala-gamma-D-Glu as substrates for peptidoglycan hydrolase MurNAc-L-Ala amidase
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UNSPECIFIED. (2002) Thioester analogues of peptidoglycan fragment MurNAc-L-Ala-gamma-D-Glu as substrates for peptidoglycan hydrolase MurNAc-L-Ala amidase. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 (14). pp. 1714-1722. ISSN 1472-7781
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Official URL: http://dx.doi.org/10.1039/b200921h
Abstract
MurNAc-L-amidase is one of a family of peptidoglycan hydrolases which catalyses the breakdown of bacterial peptidoglycan. Analogues of the peptidoglycan fragment MurNAc-L-Ala-gamma-D-Glu containing S-thiolactic acid in place of L-alanine were synthesised as thioester substrates for this enzyme. Triphenylmethanethiol was used to develop a stereoselective synthesis of S-thiolactic acid, which was elaborated synthetically into MurNAc-dipeptide analogues. MurNAc-S-thioacetyl-N-propylamide 13 and MurNAc-S-thiolactyl-2R-alaninamide 16 were found not to be substrates for recombinant MurNAc-L-Ala amidases CwlA from Bacillus subtilis and Ply21 from bacteriophage TP21, however, turnover of tripeptide thioester S-propionylthiolactyl-gamma-D-Glu-L-Lys-OMe 21 was observed using amidase Ply21. Therefore, recognition of the amino acid at position 3 of the pentapeptide sidechain appears to be important for enzymatic turnover.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1 |
| Publisher: | ROYAL SOC CHEMISTRY |
| ISSN: | 1472-7781 |
| Date: | 2002 |
| Number: | 14 |
| Number of Pages: | 9 |
| Page Range: | pp. 1714-1722 |
| Identification Number: | 10.1039/b200921h |
| Publication Status: | Published |
| URI: | http://wrap.warwick.ac.uk/id/eprint/10768 |
Data sourced from Thomson Reuters' Web of Knowledge
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