Linked Life Data

8331139

Source:http://linkedlifedata.com/resource/pubmed/id/8331139

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1993-8-19
pubmed:abstractText
High-performance capillary electrophoresis (HPCE) was used to monitor the progress of the unfolding of human serum transferrin in urea. Denaturation curves of the transferrin forms were constructed plotting the migration times corrected for the viscosity vs. the concentration of urea in the buffer. The practical advantage of capillary zone electrophoresis is the short analysis time, 5-15 min, as compared with slab-gel experiments, which require overnight runs for similar purposes. The resolution increased with the urea concentration, and hence high concentrations are beneficial for quantitative and qualitative analysis of mixtures of transferrin forms. Unfolding intermediates of the isoforms, which interconvert to the unfolded state slowly compared with the time scale of the electrophoretic separation, and also the completely unfolded isoforms were resolved and detected simultaneously when iron-free transferrin was subjected to denaturation by urea at concentrations between 3 and 6 M. However, no unfolding intermediates were observed with transferrin isoforms containing two iron atoms (i.e. diferric transferrin molecules), which accordingly are strongly resistant to urea denaturation. The unfolding of the transferrin isoforms depends on the iron content of the complexes, but not the carbohydrate content. HPCE in the presence of urea in this mode has the potential to become an analytical tool for diagnosis of diseases in which the transferrin patterns change.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9673
pubmed:author
pubmed:issnType
Print
pubmed:day
28
pubmed:volume
638
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
269-76
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Unfolding of human serum transferrin in urea studied by high-performance capillary electrophoresis.
pubmed:affiliation
Institute of Biochemistry, Uppsala University, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't