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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Váradi, A. Scheraga, H. A. Horwitz, B. H. |
| Abstract | Fibrinogen fragment D1 was converted to fragment D3 by plasmic digestion. This conversion eliminates the ability of the fragment to interact with thrombin-exposed sites on fibrin monomer. Peptides released during this plasmic digestion were assayed for the presence of a polymerization site by affinity chromatography on fibrin monomer-Sepharose. We found that a 33-residue peptide, corresponding to gamma-chain Thr-374 to Lys-406, binds to immobilized fibrin monomer. This peptide is a shorter variant of a previously isolated 38-residue peptide (gamma-chain Thr-374 to Val-411) that contains a polymerization site [Olexa, S. A. & Budzynski, A. Z. (1981) J. Biol. Chem. 256, 3544-3549]. The peptide mixture derived from fragment D1 was digested further with Staphylococcus aureus protease V8, and a 23-residue peptide, gamma-chain Thr-374 to Glu-396, carrying a polymerization site, was isolated by affinity chromatography. This 23-residue peptide inhibits the polymerization of desA-fibrinogen. We conclude that a polymerization site complementary to the site exposed by removal of fibrinopeptide A is present in this segment. The localization of the polymerization site within the gamma-chain segment 374-396 implies that the polymerization site does not overlap with segments of the gamma-chain that are responsible for platelet aggregation and for Staphylococcus clumping (residues 400-411 and 397-411, respectively) or with the residues involved in factor XIIIa-catalyzed fibrin crosslinking (Gln-398 and Lys-406). |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 19 |
| Volume Number | 81 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1984-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Fibrin Fibrinogen Degradation Products Metabolism Fibrin Amino Acid Sequence Amino Acids Chromatography, High Pressure Liquid Isolation & Purification Kinetics Macromolecular Substances Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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