Linked Life Data

12511552

Source:http://linkedlifedata.com/resource/pubmed/id/12511552

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2003-3-31
pubmed:abstractText
Fibrillin-1 is a mosaic protein mainly composed of 43 calcium binding epidermal growth factor-like (cbEGF) domains arranged as multiple, tandem repeats. Mutations within the fibrillin-1 gene cause Marfan syndrome (MFS), a heritable disease of connective tissue. More than 60% of MFS-causing mutations identified are localized to cbEGFs, emphasizing that the native properties of these domains are critical for fibrillin-1 function. The cbEGF12-13 domain pair is within the longest run of cbEGFs, and many mutations that cluster in this region are associated with severe, neonatal MFS. The NMR solution structure of Ca(2+)-loaded cbEGF12-13 exhibits a near-linear, rod-like arrangement of domains. This observation supports the hypothesis that all fibrillin-1 (cb)EGF-cbEGF pairs, characterized by a single interdomain linker residue, possess this rod-like structure. The domain arrangement of cbEGF12-13 is stabilized by additional interdomain packing interactions to those observed for cbEGF32-33, which may help to explain the previously reported higher calcium binding affinity of cbEGF13. Based on this structure, a model of cbEGF11-15 that encompasses all known neonatal MFS missense mutations has highlighted a potential binding region. Backbone dynamics data confirm the extended structure of cbEGF12-13 and lend support to the hypothesis that a correlation exists between backbone flexibility and cbEGF domain calcium affinity. These results provide important insight into the potential consequences of MFS-associated mutations for the assembly and biomechanical properties of connective tissue microfibrils.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
278
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
12199-206
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Solution structure and dynamics of a calcium binding epidermal growth factor-like domain pair from the neonatal region of human fibrillin-1.
pubmed:affiliation
Divisions of Structural Biology, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't