Linked Life Data

19204013

Source:http://linkedlifedata.com/resource/pubmed/id/19204013

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2009-5-1
pubmed:abstractText
Collagen is composed of fibrils that are formed by self-assembly of smaller units, monomers which are triple-helical polypeptide. However, the mechanism of fibril formation at the level of individual molecules has remained to be clarified. We found that the fluorescence of thioflavin T, which has been widely used as a specific dye for amyloid fibrils, also increased by binding with fibrils of atelocollagen prepared from yellowfin tuna skin. There was a linear correlation between the fluorescence increase and the amount of atelocollagen within a collagen concentration range of 0-0.15 mg/ml at pH 6.5 with 50 microM thioflavin T. In contrast, neither actinidain-processed collagen that keeps monomeric nature nor heat-denatured collagen could cause the fluorescence increase of thioflavin T at all. The relationship between the fluorescence increase and thioflavin T concentration was fit to a theoretical binary binding curve. An apparent dissociation constant, K(d), and a maximal fluorescence increase, DeltaF(max), were calculated at various pHs. The values of K(d) and DeltaF(max) were dependent on pH (K(d) was 9.4 microM at pH 6.5). The present finding demonstrates that thioflavin T specifically binds to collagen fibrils and may be used as a sensitive tool for the study of collagen structure.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
1756-2651
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
145
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
677-84
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Characterization of type I collagen fibril formation using thioflavin T fluorescent dye.
pubmed:affiliation
Department of Biotechnological Science, Kinki University, Kinokawa, Wakayama, Japan. morimoto@waka.kindai.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't