Quinone-mediated decolorization of sulfonated azo dyes by cells and cell extracts from Sphingomonas xenophaga

The effects of various quinone compounds on the decolorization rates of sulfonated azo dyes by Sphingomonas xenophaga QYY were investigated. The results showed that anthraquinone-2-sulfonate （AQS） was the most effective redox mediator and AQS reduction was the rate-limited step of AQS-mediated decol...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental sciences (China) 2009-01, Vol.21 (4), p.503-508
Main Authors: JIAO, Ling, LU, Hong, ZHOU, Jiti, WANG, Jing
Format: Article
Language:English
Subjects:
Azo Compounds - metabolism
Benzoquinones - metabolism
Color
Coloring Agents - metabolism
Electrophoresis, Polyacrylamide Gel
NAD(P)H Dehydrogenase (Quinone) - metabolism
redox mediator
reductase
Sphingomonas
Sphingomonas - enzymology
Sphingomonas - metabolism
Sphingomonas xenophaga
sulfonated azo dyes
Sulfones - metabolism
偶氮染料
提取物
细胞质
脱色率
非变性聚丙烯酰胺凝胶电泳
鞘氨醇
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effects of various quinone compounds on the decolorization rates of sulfonated azo dyes by Sphingomonas xenophaga QYY were investigated. The results showed that anthraquinone-2-sulfonate （AQS） was the most effective redox mediator and AQS reduction was the rate-limited step of AQS-mediated decolorization of sulfonated azo dyes. Based on AQS biological toxicity tests, it was assumed that AQS might enter the cells and kill them. In the cytoplasmic extracts from strain QYY, AQS more effectively increased decolorization rates of sulfonated azo dyes than other quinone compounds. In addition, we found a NADH/FMN-dependent AQS reductase using nondenaturing polyacrylamide gel electrophoresis （Native-PAGE）.
ISSN:1001-0742
1878-7320
DOI:10.1016/S1001-0742(08)62299-8