期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1989
卷号:86
期号:22
页码:8951-8954
DOI:10.1073/pnas.86.22.8951
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:Fibrin, but not fibrinogen, accelerates the activation of plasminogen catalyzed by tissue-type plaminogen activator. Previous work showed that essential information for this accelerating capacity of fibrin resides in the sequence corresponding to residues 148-160 of the A alpha chain of fibrinogen [A alpha-(148-160)]. Our working hypothesis, based on those findings, is that A alpha-(148-160) is buried in fibrinogen and becomes accessible to proteins such as plasminogen and/or tissue-type plasminogen activator when fibrinogen is converted to fibrin. To test this hypothesis we have raised a monoclonal antibody against synthetic A alpha-(148-160) and found that this antibody reacts with fibrin and not with fibrinogen. This finding shows that A alpha-(148-160) becomes accessible when fibrinogen is converted to fibrin and that A alpha-(148-160) is a fibrin-specific neoantigenic determinant.