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. 1997 Sep;88(1-2):43-52.
doi: 10.1016/s0166-6851(97)00069-8.

Cloning and characterization of actin depolymerizing factor from Toxoplasma gondii

M L Allen  1 , J M Dobrowolski, H Muller, L D Sibley, T E Mansour
Affiliations
Free article

Cloning and characterization of actin depolymerizing factor from Toxoplasma gondii

M L Allen et al. Mol Biochem Parasitol. 1997 Sep.
Free article

Erratum in

  • Mol Biochem Parasitol 1997 Dec 1;90(1):399

Abstract

We determined the predicted amino acid sequence of actin depolymerizing factor (ADF) from Toxoplasma gondii by sequencing the full-length cDNA. T. gondii ADF consists of 118 amino acids (calculated molecular weight 13,400) and shares a high degree of sequence similarity to other low molecular weight actin monomer sequestering proteins, especially Acanthamoeba actophorin, plant ADFs and yeast and vertebrate cofilin. ADF from T. gondii is smaller and does not contain a nuclear localization sequence like the related vertebrate proteins. Southern blot analysis indicates that T. gondii ADF is a single-copy gene. Homogeneous recombinant T. gondii ADF purified from E. coli is active in binding actin monomers and depolymerizing F-actin. Localization of ADF by immunofluorescence and immunoelectron microscopy indicates ADF is scattered throughout the cytoplasm and prominently localized beneath the plasma membrane in T. gondii.

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