| Title: |
Oxidative biodegradation of phosphorothiolates by fungal laccase |
| Authors: |
Amitai, G; Adani, R; Sod-Moriah, G; Rabinovitz, I; Vincze, A; Leader, H; Chefetz, B; Leibovitz-Persky, L; Friesem, D; Hadar, Y |
| Source: |
FEBS Letters ; volume 438, issue 3, page 195-200 ; ISSN 0014-5793 1873-3468 |
| Publisher Information: |
Wiley |
| Publication Year: |
1998 |
| Collection: |
Wiley Online Library (Open Access Articles via Crossref) |
| Description: |
Organophosphorus (OP) insecticides and nerve agents that contain P‐S bond are relatively more resistant to enzymatic hydrolysis. Purified phenol oxidase (laccase) from the white rot fungus Pleurotus ostreatus ( Po ) together with the mediator 2,2′‐azinobis(3‐ethylbenzthiazoline‐6‐sulfonate) (ABTS) displayed complete and rapid oxidative degradation of the nerve agents VX and Russian VX (RVX) and the insecticide analog diisopropyl‐Amiton with specific activity: k sp =2200, 667 and 1833 nmol min −1 mg −1 , respectively (pH 7.4, 37°C). A molar ratio of 1:20 for OP/ABTS and 0.05 M phosphate at pH 7.4 provided the highest degradation rate of VX and RVX. The thermostable laccase purified from the fungus Chaetomium thermophilium ( Ct ) in the presence of ABTS caused a 52‐fold slower degradation of VX with k sp =42 nmol min −1 mg −1 . The enzymatic biodegradation products were identified by 31 P‐NMR and GC/MS analysis. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1016/s0014-5793(98)01300-3 |
| DOI: |
10.1016/S0014-5793%2898%2901300-3 |
| Availability: |
https://doi.org/10.1016/s0014-5793(98)01300-3; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1016%2FS0014-5793%2898%2901300-3; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1016%2FS0014-5793(98)01300-3; https://febs.onlinelibrary.wiley.com/doi/pdf/10.1016/S0014-5793%2898%2901300-3 |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| Accession Number: |
edsbas.B6C95E61 |
| Database: |
BASE |