Linked Life Data

12653561

Source:http://linkedlifedata.com/resource/pubmed/id/12653561

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2003-3-25
pubmed:abstractText
The c-Fes protein-tyrosine kinase regulates the growth and differentiation of diverse cell types, including myeloid hematopoietic cells, vascular endothelial cells, and neurons. Structurally, Fes is composed of a unique N-terminal region with coiled-coil oligomerization motifs, followed by SH2 and kinase domains. Although Fes kinase activity is tightly regulated in cells, the structural basis for its negative regulation is not clear. In this report, c-Fes was expressed in Saccharomyces cerevisiae to determine whether regulation is kinase-intrinsic or dependent upon protein factors found in mammalian cells. Wild-type Fes kinase activity was completely repressed in yeast and did not affect cell growth. Mutation or deletion of the more N-terminal c-Fes coiled-coil domain reversed negative regulation, leading to strong kinase activation and suppression of yeast cell growth. Similarly, replacement of the wild-type SH2 domain with that of v-Src induced strong kinase activation and the growth-inhibitory phenotype. Immunoblotting with phosphospecific antibodies shows that activation of Fes by either mechanism induced autophosphorylation of the activation loop tyrosine residue (Tyr 713). These data support the idea that Fes naturally adopts an inactive conformation in vivo, and that maintenance of the inactive structure requires the coiled-coil and SH2 domains.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3567-74
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Regulation of c-Fes tyrosine kinase activity by coiled-coil and SH2 domains: analysis with Saccharomyces cerevisiae.
pubmed:affiliation
Department of Molecular Genetics and Biochemistry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S.