Linked Life Data

7843274

Source:http://linkedlifedata.com/resource/pubmed/id/7843274

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1995-3-9
pubmed:abstractText
Potassium-depleted fibroblasts are unable to develop polarized morphology and lack coated pits. Experiments were carried out to measure internalization of fibronectin receptors (FNR) in potassium-depleted cells and possible association of FNR with AP-2 complexes after adding potassium back to the cells, which restores cell polarization. AP-2 complexes are the cell surface component of coated pits that contain both clathrin and membrane receptor binding domains. Potassium-depleted fibroblasts endocytosed antibody-tagged FNR and also internalized fluorescent fibronectin that previously had been adsorbed to the substratum. During cell polarization, antibody-tagged FNR reorganized into fibrillar structures along stress fibers beginning from nucleation sites at cell margins. Plasma membrane AP-2 complexes, which were undetectable in potassium-depleted cells, reappeared at the cell surface above the nucleus and then spread toward the cell margins. The results show that endocytosis of FNR can occur at least partially by a coated pit-independent mechanism.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0014-4827
pubmed:author
pubmed:issnType
Print
pubmed:volume
216
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
299-309
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Fibronectin receptor internalization and AP-2 complex reorganization in potassium-depleted fibroblasts.
pubmed:affiliation
Department of Cell Biology and Neuroscience, University of Texas Southwestern Medical Center, Dallas 75235.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.