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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Srinivasan, N. Slingsby, C. Driessen, H. Zarina, S. Jaenicke, R. Zaidi, Z. H. |
| Description | Country affiliation: Pakistan Author Affiliation: Zarina S ( H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.) |
| Abstract | A 3-dimensional model of the human eye lens protein gamma S-crystallin has been constructed using comparative modeling approaches encoded in the program COMPOSER on the basis of the 3-dimensional structure of gamma-crystallin and beta-crystallin. The model is biased toward the monomeric gamma B-crystallin, which is more similar in sequence. Bovine gamma S-crystallin was shown to be monomeric by analytical ultracentrifugation without any tendency to form assemblies up to concentrations in the millimolar range. The connecting peptide between domains was therefore built assuming an intramolecular association as in the monomeric gamma-crystallins. Because the linker has 1 extra residue compared with gamma B and beta B2, the conformation of the connecting peptide was constructed by using a fragment from a protein database. gamma S-crystallin differs from gamma B-crystallin mainly in the interface region between domains. The charged residues are generally paired, although in a different way from both beta- and gamma-crystallins, and may contribute to the different roles of these proteins in the lens. |
| ISSN | 09618368 |
| e-ISSN | 1469896X |
| Journal | Protein Science |
| Issue Number | 10 |
| Volume Number | 3 |
| Language | English |
| Publisher | Wiley-Blackwell (on behalf of The Protein Society) |
| Publisher Date | 1994-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Crystallins Chemistry Crystallography, X-ray Models, Molecular Amino Acid Sequence Animals Computer Simulation Cysteine Electrochemistry Macromolecular Substances Methionine Molecular Sequence Data Molecular Weight Peptide Fragments Protein Conformation Ultracentrifugation Comparative Study Research Support, Non-u.s. Gov't 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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