1. Disruption of the svkA gene encoding severin kinase.
Disruption of the svkA gene encoding severin kinase. (A) Two fragments of the kinase were amplified by PCR from genomic DNA, ligated to the blasticidin-resistance cassette and electroporated into AX2 wild-type cells. (B) Blasticidin-resistant clones were tested for knockout events by PCR1 (primers 1 and 2, 1385 bp for knockout) and PCR2 (primers 1 and 3, 2038 bp as a wild-type control). Under the conditions used, PCR2 did not ever amplify ∼3400 bp, including the blasticidin-resistance cassette, in the knockout, but the lack of a PCR product indicated a disruption of the svkA gene as well. (C) Western blot of 2×105 cells per lane, visualized with kinase-specific antibodies confirms the knockout at the level of SvkA protein and also shows the expression of the GFP fusion protein in the wild-type (first lane) and the mutant background (fourth lane). (D) GFP-SvkA-FL, immunoprecipitated from rescue cells, phosphorylated domains 2 and 3 of severin (DS211C, left), myelin basic protein (MyBP, right) and itself (both lanes).
Meino Rohlfs et al. J Cell Sci 2007;120:
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