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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Rosen, Barry P. Villadangos, Almudena F. Gil, José A. Meng, Yuling Bhattacharjee, Hiranmoy Mateos, Luís M. Fu, Hseuh-liang Ordóñez, Efrén |
| Description | Author Affiliation: Fu HL ( Department of Biochemistry and Molecular Biology, Wayne State University, School of Medicine, Detroit, Michigan 48201, USA.) |
| Abstract | Members of the Acr3 family of arsenite permeases confer resistance to trivalent arsenic by extrusion from cells, with members in every phylogenetic domain. In this study bacterial Acr3 homologues from Alkaliphilus metalliredigens and Corynebacterium glutamicum were cloned and expressed in Escherichia coli. Modification of a single cysteine residue that is conserved in all analyzed Acr3 homologues resulted in loss of transport activity, indicating that it plays a role in Acr3 function. The results of treatment with thiol reagents suggested that the conserved cysteine is located in a hydrophobic region of the permease. A scanning cysteine accessibility method was used to show that Acr3 has 10 transmembrane segments, and the conserved cysteine would be predicted to be in the fourth transmembrane segment. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 30 |
| Volume Number | 284 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2009-07-24 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Arsenite Transporting ATPases Genetics Metabolism Arsenites Corynebacterium Glutamicum Enzymology Gram-Positive Bacteria Point Mutation Amino Acid Sequence Chemistry Cloning, Molecular Cysteine Escherichia Coli Gene Expression Molecular Sequence Data Protein Structure, Secondary Sulfhydryl Reagents Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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