Linked Life Data

11729193

Source:http://linkedlifedata.com/resource/pubmed/id/11729193

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
14
pubmed:dateCreated
2002-4-1
pubmed:abstractText
The prompt clearance of cells undergoing apoptosis is critical during embryonic development, normal tissue turnover, as well as inflammation and autoimmunity. The molecular details of the engulfment of apoptotic cells are not fully understood. ced-6 and its human homologue gulp, encode an adapter protein, whose function in engulfment is highly evolutionarily conserved; however, the upstream and downstream components of CED-6 mediated signaling are not known. Recently, ced-1 has been shown to encode a transmembrane protein on phagocytic cells, with two functional sequence motifs in its cytoplasmic tail that are important for engulfment. In this study, using a combination of biochemical approaches and yeast two-hybrid analysis, we present evidence for a physical interaction between GULP/CED-6 and one of the two motifs (NPXY motif) in the cytoplasmic tail of CED-1. The phosphotyrosine binding domain of GULP was necessary and sufficient for this interaction. Since the precise mammalian homologue of CED-1 is not known, we undertook a database search for human proteins that contain the motifs shown to be important for CED-1 function and identified CD91/LRP (low density lipoprotein receptor-related protein) as one candidate. Interestingly, recent studies have also identified CD91/LRP as a receptor involved in the phagocytosis of apoptotic cells in mammals. The GULP phosphotyrosine binding domain was able to specifically interact with one specific NPXY motif in the CD91 cytoplasmic tail. During these studies we have also identified the mouse GULP sequence. These studies suggest a physical link between CED-1 or CD91/LRP and the adapter protein CED-6/GULP during engulfment of apoptotic cells and further elucidate the pathway suggested by the genetic studies.
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
5
pubmed:volume
277
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
11772-9
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:11729193-Adaptor Proteins, Signal Transducing, pubmed-meshheading:11729193-Amino Acid Motifs, pubmed-meshheading:11729193-Amino Acid Sequence, pubmed-meshheading:11729193-Animals, pubmed-meshheading:11729193-Apoptosis, pubmed-meshheading:11729193-COS Cells, pubmed-meshheading:11729193-Caenorhabditis elegans Proteins, pubmed-meshheading:11729193-Cytoplasm, pubmed-meshheading:11729193-Databases, Factual, pubmed-meshheading:11729193-Glutathione Transferase, pubmed-meshheading:11729193-Humans, pubmed-meshheading:11729193-Immunoblotting, pubmed-meshheading:11729193-Low Density Lipoprotein Receptor-Related Protein-1, pubmed-meshheading:11729193-Membrane Proteins, pubmed-meshheading:11729193-Mice, pubmed-meshheading:11729193-Molecular Sequence Data, pubmed-meshheading:11729193-Peptides, pubmed-meshheading:11729193-Phosphoproteins, pubmed-meshheading:11729193-Plasmids, pubmed-meshheading:11729193-Precipitin Tests, pubmed-meshheading:11729193-Protein Binding, pubmed-meshheading:11729193-Protein Structure, Tertiary, pubmed-meshheading:11729193-Proteins, pubmed-meshheading:11729193-Sequence Homology, Amino Acid, pubmed-meshheading:11729193-Transfection, pubmed-meshheading:11729193-Two-Hybrid System Techniques
pubmed:year
2002
pubmed:articleTitle
Interaction of CED-6/GULP, an adapter protein involved in engulfment of apoptotic cells with CED-1 and CD91/low density lipoprotein receptor-related protein (LRP).
pubmed:affiliation
Beirne Carter Center for Immunology Research and the Department of Microbiology, University of Virginia, Charlottesville, Virginia 22908, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't