Screening for genetic variation

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving nucleic acid

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435 912, 435810, 536 254, 530350, 530412, 530810, 935 77, 935 78, C12Q 168, C12P 1934, C07K 14195, C07K 1700

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057503354

ABSTRACT:
Disclosed is a method of genetic screening for a nucleotide variation, the method including the steps of (A) providing a mixture of nucleic acids comprising heteroduplex nucleic acids and excess homoduplex nucleic acids, wherein each said heteroduplex comprises a test nucleic acid strand isolated from an organism and a reference nucleic acid strand, each said heteroduplex also comprising a mismatched nucleotide pair, wherein said excess homoduplex nucleic acids are generated by reannealing of a first test or reference nucleic acid strand with a fully complementary second test or reference nucleic acid strand; (B) subjecting said mixture to a mismatch binding protein under conditions which promote binding to form a heteroduplex/binding protein complex; and C) detecting the presence of said mismatched nucleotide pair as an indication of the presence of genetic variation between said test and reference nucleic acids.

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