Four chelating surfactants were synthesized in a few steps from octyl D-glucosides. Their main interfacial properties were determined, and their flotation properties were evaluated on a laboratory scale using Fe(III) as a model contaminant metal. The performance on metal extraction was mainly dependent on the complexing functional group, but the surfactant efficiency was also important. (C) 2008 Elsevier Ltd. All rights reserved.
Expression and initial characterization of WbbI, a putative<scp>d</scp>-Galf:α-<scp>d</scp>-Glc β-1,6-galactofuranosyltransferase from Escherichia coli K-12
作者:Corin Wing、James C. Errey、Balaram Mukhopadhyay、John S. Blanchard、Robert A. Field
DOI:10.1039/b609455d
日期:——
Cloning of E. coli K-12 orf8 (wbbI) and over-expression of the corresponding enzyme as a maltose-binding fusion protein provided recombinant WbbI β-1,6-galactofuranosyltransferase activity. Challenged with synthetic acceptor analogues in the presence of UDP-galactofuranose as a donor, WbbI showed a modest preference for pyranoside acceptor substrates of the α-D-gluco-configuration but it also possessed the ability to turn-over acceptor analogues.