Term Name:	PAC
Synonyms:	P1, P1 artificial chromosome
Definition:	The P1-derived artificial chromosome are DNA constructs that are derived from the DNA of P1 bacteriophage. They can carry large amounts (about 100-300 kilobases) of other sequences for a variety of bioengineering purposes. It is one type of vector used to clone DNA fragments (100- to 300-kb insert size; average, 150 kb) in Escherichia coli cells.
Ontology:	Sequence Ontology [SO:0000154]