Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Lewis C. Gershman"'
Publikováno v:
Biochemistry. 41:6734-6743
We have quantitated the in vitro interactions of profilin and the profilin-actin complex (PA) with the actin filament barbed end using profilin and nonmuscle beta,gamma-actin prepared from bovine spleen. Actin filament barbed end elongation was initi
Publikováno v:
Biochemistry. 39:13176-13188
The interaction of profilin and non-muscle beta,gamma-actin prepared from bovine spleen has been investigated under physiologic ionic conditions. Profilin binding to actin decreases the affinity of actin for MgADP and MgATP by about 65- and 13-fold,
Publikováno v:
Biochemistry. 39:64-74
A covalently linked actin dimer is identified in solutions of actin prepared from an acetone powder from skeletal muscle. This actin dimer acts as an actin nucleating factor (ANF), decreasing the half-time for spontaneous actin polymerization. ANF re
Autor:
Lynn A. Selden, Bryan Lincoln, Henry J. Kinosian, Lewis C. Gershman, Jay Newman, James E. Estes, Hurwitz C
Publikováno v:
Biophysical Journal. 75(6):3092-3100
Gelsolin is a Ca2+-regulated actin-binding protein that can sever, cap, and nucleate growth from the pointed ends of actin filaments. In this study we have measured the binding of the amino-terminal half of gelsolin, G1–3, to pyrene-labeled F-actin
Autor:
Henry J. Kinosian, Jay Newman, Lewis C. Gershman, Lynn A. Selden, James E. Estes, Bryan Lincoln
Publikováno v:
Biophysical Journal. 75:3101-3109
Regulation of the F-actin severing activity of gelsolin by Ca2+ has been investigated under physiologic ionic conditions. Tryptophan fluorescence intensity measurements indicate that gelsolin contains at least two Ca2+ binding sites with affinities o
Publikováno v:
Journal of Biological Chemistry. 268:8683-8691
We have reinvestigated nucleotide binding to actin in order to resolve conflicts regarding the mechanism of nucleotide dissociation and exchange. We present evidence that supports a mechanism for nucleotide binding to actin in which the tightly bound
Publikováno v:
Journal of Muscle Research and Cell Motility. 13:272-284
Actin is known to undergo reversible monomer-polymer transitions that coincide with various cell activities such as cell shape changes, locomotion, endocytosis and exocytosis. This dynamic state of actin filament self-assembly and disassembly is thou
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. 1077:151-158
Previous work by this laboratory has shown that the tightly bound divalent cation of actin affects the enthalpy of the polymerization reaction for ATP-actin (Selden et al. (1986) J. Muscle Res. Cell Motil. 7, 215-224). In the present study, we have m
Publikováno v:
Journal of Biological Chemistry. 266:76-82
Each actin molecule has one high affinity site which binds a divalent cation. It has been proposed that an isomerization of the actin molecule is involved in divalent cation exchange at this site ("isomerization model," Frieden, C. (1982) J. Biol. Ch
Publikováno v:
Biochemistry. 43(20)
Using vertebrate cytoplasmic actin consisting of a mixture of beta and gamma isoforms, we previously characterized profilin and nucleotide binding to monomeric actin (Kinosian, H. J., et al. (2000) Biochemistry 39, 13176-13188) and F-actin barbed end