Dna2 mutants reveal interactions with Dna polymerase alpha and Ctf4, a Pol alpha accessory factor, and show that full Dna2 helicase activity is not essential for growth.

Abstract excerpt

Mutations in the gene for the conserved, essential nuclease-helicase Dna2 from the yeast Saccharomyces cerevisiae were found to interact genetically with POL1 and CTF4, which encode a DNA Polymerase alpha subunit and an associated protein, suggesting that Dna2 acts in a process that involves Pol alpha. DNA2 alleles were isolated that cause either temperature sensitivity, sensitivity to alkylation damage, or both....

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