Linked Life Data

2894309

Source:http://linkedlifedata.com/resource/pubmed/id/2894309

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-4-19
pubmed:abstractText
Recombinant single-chain urokinase-type plasminogen activator (rscu-PA), in which the plasmin-sensitive peptide bond Lys158-Ile159 is destroyed by site-specific mutagenesis of Lys158 to Glu (rscu-PA-Glu158), is quantitatively converted to two-chain urokinase-type plasminogen activator (rtcu-PA-Glu158) by treatment with endoproteinase Glu-C (Staphylococcus aureus V8 proteinase). The catalytic efficiency (k2/Km) of rscu-PA-Glu158 for the activation of plasminogen is 20 times lower (0.0001 microM-1 s-1) than that of rscu-PA (0.002 microM-1 s-1). In contrast, rtcu-PA-Glu158 has very similar properties to rtcu-PA obtained by digestion of rscu-PA with plasmin, including binding to benzamidine-Sepharose, catalytic efficiency for the activation of plasminogen (0.035 microM-1 s-1 versus 0.046 microM-1 s-1) and fibrinolytic activity in an in vitro plasma clot lysis system. It is concluded that the amino acid in position 158 is a main determinant of the functional properties of single-chain urokinase-type plasminogen activator but not of the two-chain form.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0014-2956
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
172
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
185-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Enzymatic properties of single-chain and two-chain forms of a Lys158----Glu158 mutant of urokinase-type plasminogen activator.
pubmed:affiliation
Center for Thrombosis and Vascular Research, University of Leuven, Belgium.
pubmed:publicationType
Journal Article