Zobrazeno 1 - 10
of 30
pro vyhledávání: '"V T, Nachmias"'
Autor:
M. Niu, V. T. Nachmias
Publikováno v:
Cell Adhesion and Communication. 7:311-320
Loss of adherence to substrate can, by itself, induce apoptosis (anoikis) in epithelial cells, but does not do so in fibroblasts. To test the idea that adherence transmits signals that inhibit apoptosis even in fibroblasts, we took advantage of the g
Autor:
M I Furman, Thomas D. Pollard, V T Nachmias, D Wachsstock, D Safer, Pascal J. Goldschmidt-Clermont
Publikováno v:
Molecular Biology of the Cell. 3:1015-1024
We present evidence for a new mechanism by which two major actin monomer binding proteins, thymosin beta 4 and profilin, may control the rate and the extent of actin polymerization in cells. Both proteins bind actin monomers transiently with a stoich
Publikováno v:
Biochemistry. 31:6179-6185
Quantitative measurements of the interactions of T beta 4 with muscle actin suggest that its only physiological role is monomer sequestration. T beta 4 forms a 1:1 complex with monomeric actin under physiological salt conditions. Its Kd for actin is
Publikováno v:
Journal of Biological Chemistry. 266:4029-4032
At least 50% of the actin in resting human platelets is unpolymerized, and the bulk of this unpolymerized actin is complexed with a recently identified acidic, heat-stable 5-kDa peptide, named "Fx." Purified Fx binds stoichiometrically to muscle G-ac
Publikováno v:
Cell motility and the cytoskeleton. 38(2)
In several cell types, short-term increases in the concentration of the G-actin-sequestering peptide thymosin-beta4 (Tbeta4) cause the disassembly of F-actin bundles. To determine the extent of cell adaptability to these reductions in F-actin, we ove
Publikováno v:
Cell motility and the cytoskeleton. 36(3)
Cultured human erythroleukemia (HEL) cells were used to study the genesis of polarity in single cells. HEL cells grow in suspension in culture medium, but attach and spread on fibronectin when treated with 10 nM phorbol myristate acetate. If the spre
Publikováno v:
European journal of cell biology. 61(2)
When resting human blood platelets are stimulated with thrombin, 50 to 60% of the G-actin polymerizes to F-actin within 60 seconds. The increase in F-actin is correlated with a corresponding decrease in the complex of G-actin with T beta 4. Within 5
Publikováno v:
The Journal of biological chemistry. 266(7)
At least 50% of the actin in resting human platelets is unpolymerized, and the bulk of this unpolymerized actin is complexed with a recently identified acidic, heat-stable 5-kDa peptide, named "Fx." Purified Fx binds stoichiometrically to muscle G-ac
Publikováno v:
Blood. 63:606-614
Recently, the contractile protein alpha-actinin was identified in normal human platelets by its antigenic cross-reaction with a monospecific antibody to purified muscle alpha-actinin. In this study, we extend that preliminary identification of platel
Autor:
P A Gonnella, V T Nachmias
Publikováno v:
The Journal of Cell Biology
Human platelets were obtained in the fully resting state by treating discoid populations with 1.5 mM tetracaine and in the activated state by treatment with 2 microM A-23187. After gel filtration or washing, respectively, platelet suspensions were ly