This phage protein modulates the activity of the host recBCD nuclease promoting phage growth and recombination, and protects the linear double stranded DNA from exonuclease degradation [1].

1: Bacteriophage P22 Abc2 protein binds to RecC increases the 5' strand nicking activity of RecBCD and together with lambda bet, promotes Chi-independent recombination. Murphy KC; J Mol Biol. 2000;296:385-401. PMID:10669596