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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yu, P. L. Schiffer, C. A. Zhao, J. Santi, D. Greene, P. J. |
| Description | Author Affiliation: Greene PJ ( Department of Biochemistry, University of California, San Francisco 94143.) |
| Abstract | The thymidylate synthase (TS) gene from Lactococcus lactis has been highly expressed in Escherichia coli. The TS protein was purified by sequential chromatography on Q-Sepharose and phenyl-Sepharose. Six grams of cell pellet yielded 140 mg of homogeneous TS. TS is a highly conserved enzyme, and several of the conserved amino acid residues that have been implicated in catalytic function are altered in L. lactis TS. By use of a 3-dimensional homology model, we have predicted covariant changes that might compensate for these differences. With the large amounts of L. lactis TS now available, studies can be pursued to understand the structure-function relationships of this enzyme compared to other TSs and to confirm the presumed roles of the compensatory changes predicted in the homology model. |
| ISSN | 09618368 |
| e-ISSN | 1469896X |
| Journal | Protein Science |
| Issue Number | 7 |
| Volume Number | 3 |
| Language | English |
| Publisher | Wiley-Blackwell (on behalf of The Protein Society) |
| Publisher Date | 1994-07-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Expression Lactococcus Lactis Enzymology Thymidylate Synthase Genetics Amino Acid Sequence Binding Sites Crystallization Escherichia Coli Hydrogen-ion Concentration Models, Molecular Molecular Sequence Data Molecular Structure Osmolar Concentration Recombinant Proteins Structure-activity Relationship Chemistry Isolation & Purification Research Support, U.s. Gov't, P.h.s. Discipline Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Molecular Biology Biochemistry |
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