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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Privé, G. G. Consler, T. G. Kaback, H. R. Verner, G. E. Zen, K. H. Jung, H. Persson, B. L. Jung, K. |
| Description | Author Affiliation: Consler TG ( Howard Hughes Medical Institute, Department of Physiology, University of California, Los Angeles 90024-1662.); |
| Abstract | A simplified approach for purification of functional lactose permease from Escherichia coli is described that is based on the construction of chimeras between the permease and a 100-amino acid residue polypeptide containing the biotin acceptor domain from the oxaloacetate decarboxylase of Klebsiella pneumoniae [Cronan, J. E., Jr. (1990) J. Biol. Chem. 265, 10327-10333]. Chimeras were constructed with a factor Xa protease site and the biotin acceptor domain in the middle cytoplasmic loop (loop 6) or at the C terminus of the permease. Each construct catalyzes active lactose transport in cells and right-side-out membrane vesicles. Moreover, the constructs are biotinylated in vivo, and in both chimeras, the factor Xa protease site is accessible from the cytoplasmic surface of the membrane. Both biotinylated permeases bind selectively to immobilized monomeric avidin and are eluted with free biotin in a high state of purity, and the loop 6 chimera catalyzes active transport after reconstitution into proteoliposomes. The methodology described should be applicable to other membrane proteins. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 15 |
| Volume Number | 90 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1993-09-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Escherichia Coli Proteins Membrane Transport Proteins Isolation & Purification Monosaccharide Transport Proteins Symporters Bacterial Proteins Biological Transport Biotin Chromatography, Affinity Escherichia Coli Chemistry Lactose Metabolism Membrane Proteins Recombinant Fusion Proteins Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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