P1-derived artificial chromosome
= P1-derived artificial chromosome
{wiki=P1-derived_artificial_chromosome}
P1-derived artificial chromosomes (PACs) are a type of cloning vector used in molecular biology and genetics to clone large fragments of DNA. They are derived from P1 bacteriophage, which is a type of virus that infects bacteria. PACs are designed to carry larger inserts of DNA than traditional plasmids (such as those used in bacterial artificial chromosomes, BACs).