Patent ID: 8440400

Claim:
A process for amplifying DNA, comprising: preparing a recombinant cell comprising: any one polynucleotide selected from the group consisting of the following (A) to (D), and a DNA unit disposed in a genome of the recombinant cell, wherein said DNA unit comprises at least first DNA fragment selected from the group consisting of the following (E) to (G), a target gene, and a second DNA fragment selected from the group consisting of (H) to (J), and wherein said target gene or polynucleotide is exogenous to said recombinant cell; (A) a polynucleotide encoding a protein consisting of the amino acid sequence of SEQ ID NO: 1, (B) a polynucleotide encoding a protein which consists of an amino acid sequence having an identity of 90% or more to the amino acid sequence of SEQ ID NO: 1, (C) a polynucleotide consisting of the nucleotide sequence of SEQ ID NO: 2, and (D) a polynucleotide which hybridizes to the polynucleotide consisting of the nucleotide sequence of SEQ ID NO: 2 under stringent conditions, (E) DNA consisting of the nucleotide sequence of SEQ ID NO: 3, (F) DNA hybridizing to the DNA consisting of the nucleotide sequence of SEQ ID NO: 3 under stringent conditions, and (G) DNA having an identity of 90% of more to the nucleotide sequence of SEQ ID NO: 3, (H) DNA represented by the nucleotide of SEQ ID NO: 4, (I) DNA hybridizing to DNA consisting of the nucleotide sequence of SEQ ID NO: 4 under stringent conditions, and (J) DNA having an identity of 90% of more to the nucleotide sequence of SEQ ID NO: 4; and culturing said recombinant cell under conditions for causing gene amplification to amplify said DNA unit.