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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mcguire, M. Herzberg, O. Noh, S. J. Carroll, L. J. Dunaway-mariano, D. Chen, C. C. Kapadia, G. |
| Description | Author Affiliation: Herzberg O ( Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, Rockville, 20850, USA.); |
| Abstract | The crystal structure of pyruvate phosphate dikinase, a histidyl multiphosphotransfer enzyme that synthesizes adenosine triphosphate, reveals a three-domain molecule in which the phosphohistidine domain is flanked by the nucleotide and the phosphoenolpyruvate/pyruvate domains, with the two substrate binding sites approximately 45 angstroms apart. The modes of substrate binding have been deduced by analogy to D-Ala-D-Ala ligase and to pyruvate kinase. Coupling between the two remote active sites is facilitated by two conformational states of the phosphohistidine domain. While the crystal structure represents the state of interaction with the nucleotide, the second state is achieved by swiveling around two flexible peptide linkers. This dramatic conformational transition brings the phosphocarrier residue in close proximity to phosphoenolpyruvate/pyruvate. The swiveling-domain paradigm provides an effective mechanism for communication in complex multidomain/multiactive site proteins. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 93 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1996-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Protein Folding Protein Structure, Secondary Pyruvate, Orthophosphate Dikinase Chemistry Metabolism Amino Acid Sequence Binding Sites Clostridium Enzymology Crystallography, X-Ray Escherichia Coli Macromolecular Substances Models, Molecular Models, Structural Molecular Sequence Data Recombinant Proteins Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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