Linked Life Data

19781630

Source:http://linkedlifedata.com/resource/pubmed/id/19781630

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2009-10-23
pubmed:abstractText
Unc119 is an adapter signaling molecule, which regulates activation of tyrosine kinases in T cells, eosinophils and fibroblasts. It plays an important role in the photoreceptor synapses of the retina. Recently, we have shown that it inhibits bacterial uptake through macropinocytosis. In this paper we demonstrate a role for Unc119 in clathrin- and caveolae-based endocytosis as well as macropinocytosis. Depletion of Unc119 in fibroblasts increases, whereas overexpression inhibits uptake of transferrin, FM4-64, albumin, viruses, and ligand-coated beads. Physiological stimuli that upregulate the expression of Unc119 also inhibits endocytosis. Unc119 has the opposite effect on cholera toxin B uptake, which represents a clathrin- and dynamin-independent endocytic process. Unc119 interacts with dynamin, a key effector molecule of many endocytic processes. More importantly, Unc119 inhibits the GTPase activity of dynamin. Binding of Unc119 to dynamin decreases the association with its binding partner amphiphysin, a known regulator of dynamin activation. Thus, Unc119 regulates various endocytic pathways through dynamin and sets a threshold point for vesicular trafficking.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1873-3913
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
22
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
128-37
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
UNC119 inhibits dynamin and dynamin-dependent endocytic processes.
pubmed:affiliation
Division of Allergy and Immunology, Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural