Linked Life Data

7693687

Source:http://linkedlifedata.com/resource/pubmed/id/7693687

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
31
pubmed:dateCreated
1993-11-29
pubmed:databankReference
pubmed:abstractText
Protein-tyrosine phosphorylation plays a critical role in the high-affinity IgE receptor (Fc epsilon RI) signaling. Here we investigated the involvement of the tyrosine kinase p72syk in Fc epsilon RI signaling in the rat mast cell line RBL-2H3. Specific antibodies were raised against peptides synthesized on the basis of the deduced peptide sequence of an essentially full-length rat syk cDNA. The expression of p72syk in RBL-2H3 cells was demonstrated with these antibodies. The aggregation of Fc epsilon RI led to the tyrosine phosphorylation of p72syk that was detected after 15 s of stimulation, reached a plateau by 5 min, and was not induced by calcium influx or protein kinase C activation. Association of p72syk with the tyrosine phosphorylated Fc epsilon RI gamma chain was detected only after receptor aggregation. We previously demonstrated that aggregation of the Fc epsilon RI on mast cells results in the tyrosine phosphorylation of a 72-kDa protein (pp72) involved in IgE signaling. The depletion of p72syk from RBL-2H3 cell lysates resulted in only a slight decrease in the amount of pp72. These results demonstrate that pp72 is composed of several phosphoproteins and identify p72syk as one component of pp72. These data, together with recent observations in T cells, indicate that the interaction between p72syk-related tyrosine kinases and zeta-related proteins could play an important role in signal transduction.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
5
pubmed:volume
268
pubmed:geneSymbol
syk
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
23318-24
pubmed:dateRevised
2011-11-2
pubmed:meshHeading
pubmed-meshheading:7693687-Amino Acid Sequence, pubmed-meshheading:7693687-Animals, pubmed-meshheading:7693687-Base Sequence, pubmed-meshheading:7693687-Cell Line, pubmed-meshheading:7693687-DNA, Complementary, pubmed-meshheading:7693687-DNA Primers, pubmed-meshheading:7693687-Enzyme Precursors, pubmed-meshheading:7693687-Gene Expression, pubmed-meshheading:7693687-Intracellular Signaling Peptides and Proteins, pubmed-meshheading:7693687-Mast Cells, pubmed-meshheading:7693687-Molecular Sequence Data, pubmed-meshheading:7693687-Phosphoproteins, pubmed-meshheading:7693687-Phosphotyrosine, pubmed-meshheading:7693687-Protein-Tyrosine Kinases, pubmed-meshheading:7693687-RNA, Messenger, pubmed-meshheading:7693687-Rats, pubmed-meshheading:7693687-Receptor Aggregation, pubmed-meshheading:7693687-Receptors, IgE, pubmed-meshheading:7693687-Sequence Alignment, pubmed-meshheading:7693687-Sequence Homology, Amino Acid, pubmed-meshheading:7693687-Signal Transduction, pubmed-meshheading:7693687-Tyrosine
pubmed:year
1993
pubmed:articleTitle
Protein-tyrosine kinase p72syk in high affinity IgE receptor signaling. Identification as a component of pp72 and association with the receptor gamma chain after receptor aggregation.
pubmed:affiliation
Laboratory of Immunology, National Institute of Dental Research, National Institutes of Health, Bethesda, Maryland 20892.
pubmed:publicationType
Journal Article, Comparative Study