Common structural genes for platelet and plasma fibrinogen |
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Authors: | Teige, B Gogstad, G Brosstad, F Olaisen, B |
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Abstract: | Fibrinogen from plasma was compared with fibrinogen from platelets using two-dimensional electrophoresis. The source of platelet fibrinogen was isolated alpha-granules, thrombin- and collagen-released platelet material. The B beta- and gamma-chains from the different sources showed similar two-dimensional patterns, while gamma'-chains were not observed in platelet fibrinogen preparations. Furthermore, the A alpha-chain could hardly be identified in platelet preparations. When individual fibrinogen was studied in persons heterozygous for genetic B beta- and gamma-chain variants, the two-dimensional variant pattern could be demonstrated in plasma fibrinogen as well as in platelet fibrinogen. This observation strongly indicates that the structural genes for plasma and platelet fibrinogen B beta- and gamma-chains are identical. |
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