Linked Life Data

10373410

Source:http://linkedlifedata.com/resource/pubmed/id/10373410

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
26
pubmed:dateCreated
1999-7-15
pubmed:abstractText
The contribution of desmosomes to epidermal integrity is evident in the inherited blistering disorder associated with the absence of a functional gene for plakophilin-1. To define the function of plakophilin-1 in desmosome assembly, interactions among the desmosomal cadherins, desmoplakin, and the armadillo family members plakoglobin and plakophilin-1 were examined. In transient expression assays, plakophilin-1 formed complexes with a desmoplakin amino-terminal domain and enhanced its recruitment to cell-cell borders; this recruitment was not dependent on the equimolar expression of desmosomal cadherins. In contrast to desmoplakin-plakoglobin interactions, the interaction between desmoplakin and plakophilin-1 was not mediated by the armadillo repeat domain of plakophilin-1 but by the non-armadillo head domain, as assessed by yeast two-hybrid and recruitment assays. We propose a model whereby plakoglobin serves as a linker between the cadherins and desmoplakin, whereas plakophilin-1 enhances lateral interactions between desmoplakin molecules. This model suggests that epidermal lesions in patients lacking plakophilin-1 are a consequence of the loss of integrity resulting from a decrease in binding sites for desmoplakin and intermediate filaments at desmosomes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
274
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
18145-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
The head domain of plakophilin-1 binds to desmoplakin and enhances its recruitment to desmosomes. Implications for cutaneous disease.
pubmed:affiliation
Department of Dermatology and the Robert H. Lurie Cancer Center, Northwestern University Medical School, Chicago, Illinois 60611, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't