|The fibrinolytic pathway of human plasma. Isolation and characterization of the plasminogen proactivator.|
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|PMID: 4264575 Owner: NLM Status: MEDLINE|
|The conversion of the plasminogen proactivator to plasminogen activator by activated Hageman factor or its fragments has been recognized as an essential step in the conversion of plasminogen to plasmin. The plasminogen proactivator has been completely separated from prekallikrein and pre-PTA, two other proenzyme substrates of activated Hageman factor or its fragments. Plasminogen proactivator, free of any contaminating proteins as assessed by disc gel electrophoresis or isoelectric focusing, revealed a single band with an isoelectric point of 8.9 corresponding in position to the Hageman factor activatable material eluted from replicate unstained gels. After conversion of plasminogen proactivator by Hageman factor fragments to the plasminogen activator, the active site of the plasminogen activator is not inhibited by C1INH and is thus readily distinguished from that of kallikrein or PTA. The plasminogen activator is susceptible to inactivation by DFP while the plasminogen proactivator is not, as has been the case for esterases having a serine in the active site. Its interaction with plasminogen is inhibited by epsilon-aminocaproic acid.|
|A P Kaplan; K F Austen|
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|Type: Journal Article|
|Title: The Journal of experimental medicine Volume: 136 ISSN: 0022-1007 ISO Abbreviation: J. Exp. Med. Publication Date: 1972 Dec|
|Created Date: 1973-02-17 Completed Date: 1973-02-17 Revised Date: 2010-06-22|
Medline Journal Info:
|Nlm Unique ID: 2985109R Medline TA: J Exp Med Country: UNITED STATES|
|Languages: eng Pagination: 1378-93 Citation Subset: AIM; IM|
|APA/MLA Format Download EndNote Download BibTex|
Blood Coagulation Factors* / isolation & purification
Complement System Proteins
Factor XII* / isolation & purification
Fibrinolysin* / antagonists & inhibitors
Histidine / antagonists & inhibitors
Plasminogen / antagonists & inhibitors
Serine / antagonists & inhibitors
|0/Aminocaproic Acids; 0/Blood Coagulation Factors; 0/Kinins; 56-45-1/Serine; 71-00-1/Histidine; 9001-30-3/Factor XII; 9001-91-6/Plasminogen; 9007-36-7/Complement System Proteins; 9035-58-9/Thromboplastin; EC 3.4.-/Streptokinase; EC 3.4.21.-/Kallikreins; EC 22.214.171.124/Fibrinolysin|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Journal ID (nlm-ta): J Exp Med
Publisher: The Rockefeller University Press
Copyright © 1972 by The Rockefeller University Press.
Received Day: 4 Month: 8 Year: 1972
Print publication date: Day: 30 Month: 11 Year: 1972
Volume: 136 Issue: 6
First Page: 1378 Last Page: 1393
PubMed Id: 4264575
|THE FIBRINOLYTIC PATHWAY OF HUMAN PLASMA : ISOLATION AND CHARACTERIZATION OF THE PLASMINOGEN PROACTIVATOR|
|Allen P. Kaplan|
|K. Frank Austen|
|From the Departments of Medicine, Harvard Medical School and Robert B. Brigham Hospital, Boston, Massachusetts 02120
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