Linked Life Data

3259145

Source:http://linkedlifedata.com/resource/pubmed/id/3259145

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-6-10
pubmed:abstractText
The inactivation of activated factor XI (factor XIa) and of its isolated light chain by C-1 inhibitor was studied. Irreversible inhibition was observed in a reaction in which no reversible enzyme-inhibitor complex was formed. The second-order rate constants for the inactivation of factor XIa or its light chain by C-1 inhibitor were 2.3 X 10(3) and 2.7 X 10(3) M-1 s-1, respectively. High molecular weight kininogen did not affect the rate of inactivation. The nature of the complexes formed between factor XIa or its light chain and C-1 inhibitor was studied by using sodium dodecyl sulfate gradient polyacrylamide slab gel electrophoresis. Under nonreducing conditions, two factor XIa-C-1 inhibitor complexes were observed with apparent molecular weights of 230,000 and 300,000. Reduction of these complexes resulted in the formation of a single band with a molecular weight of 130,000. This band is also formed in the reaction of the isolated light chain of factor XIa with C-1 inhibitor. These results demonstrate that two C-1 inhibitor molecules can become bound to the light chains of a factor XIa molecule. In addition, the mechanism of interaction of factor XIa or its isolated light chain with C-1 inhibitor appears identical, and the rate of inactivation of the enzyme by C-1 inhibitor is very similar. Neither the heavy chain of factor XIa nor high molecular weight kininogen is significantly involved in the inactivation of factor XIa by C-1 inhibitor.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
959-63
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Inhibition of human blood coagulation factor XIa by C-1 inhibitor.
pubmed:affiliation
Department of Haematology, University Hospital Utrecht, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't