Linked Life Data

7737405

Source:http://linkedlifedata.com/resource/pubmed/id/7737405

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1995-6-8
pubmed:abstractText
Exocytosis begins with formation of a small fusion pore which then expands allowing rapid release of granular contents. We studied the influence of cytoplasmic free Ca2+ ([Ca2+]i) on the conductance of the initial pore and on the dynamics of subsequent expansion in horse eosinophils using the patch clamp technique. The mean initial conductance is approximately 200 pS independent of [Ca2+]i. This value is close to that previously found in beige mouse mast cells. The pore subsequently expands by 18 nS/s at [Ca2+]i < 10 nM, by 40 nS/s at [Ca2+]i = 1.5 microM and by 90 nS/s at [Ca2+]i = 10 microM. These results show that the structure of the initial fusion pore is independent of cytoplasmic Ca2+. However, the pore expansion is a Ca(2+)-dependent process modulating secretion at a step later than vesicle-plasma membrane fusion.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0014-5793
pubmed:author
pubmed:issnType
Print
pubmed:day
24
pubmed:volume
363
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
217-20
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
A novel Ca(2+)-dependent step in exocytosis subsequent to vesicle fusion.
pubmed:affiliation
Abt. Molekulare Zellforschung, Max-Planck-Institut für medizinische Forschung, Heidelberg, Germany.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't