rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
9
|
pubmed:dateCreated |
1984-6-14
|
pubmed:abstractText |
The fraction of assembled actin and the diffusion coefficients of filamentous and nonfilamentous species have been determined by fluorescence photobleaching recovery. For both Mg2+-induced and K+-induced actin assembly, a higher concentration of cation leads to longer filaments. Cytochalasin D reduces the fraction of actin present as assembled filaments. In the absence of Mg2+, the accompanying increase in diffusion coefficient of the filaments is of an appropriate magnitude to be accounted for by shortening of filaments as a result of net depolymerization. In the presence of Mg2+, cytochalasin D induces a dose-dependent increase in diffusion coefficient up to about a factor of 10. This increase indicates a shortening of filaments consistent with extensive filament cleavage. Under all conditions studied, the unassembled actin is present primarily as monomer.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
May
|
pubmed:issn |
0021-9258
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
10
|
pubmed:volume |
259
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
5549-54
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:6715359-Actins,
pubmed-meshheading:6715359-Animals,
pubmed-meshheading:6715359-Cytochalasin D,
pubmed-meshheading:6715359-Cytochalasins,
pubmed-meshheading:6715359-Kinetics,
pubmed-meshheading:6715359-Macromolecular Substances,
pubmed-meshheading:6715359-Magnesium,
pubmed-meshheading:6715359-Mathematics,
pubmed-meshheading:6715359-Muscles,
pubmed-meshheading:6715359-Potassium,
pubmed-meshheading:6715359-Rabbits,
pubmed-meshheading:6715359-Rats,
pubmed-meshheading:6715359-Spectrometry, Fluorescence
|
pubmed:year |
1984
|
pubmed:articleTitle |
Distinctions between mechanisms of cytochalasin D activity for Mg2+- and K+-induced actin assembly.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.
|