The complete absence of cytoplasmic γ-actin results in no discernible phenotype in mice or primary fibroblasts.

Abstract excerpt

Mice and primary fibroblasts derived from mouse embryos completely lacking cytoplasmic β-actin, because the Actb gene was engineered to instead express γ-actin protein, have previously been found to be virtually devoid of phenotype. Here, we report the characterization of mice and mouse embryonic fibroblasts homozygous for an Actg1 allele edited to translate β-actin instead of γ-actin (Actg1-coding beta;...

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