Method of preparing polynucleotide fragments for use in...

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing compound containing saccharide radical

Reexamination Certificate

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C435S441000, C435S442000, C435S443000, C435S444000, C435S445000

Reexamination Certificate

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10713006

ABSTRACT:
The invention relates to a fragmentation process that depends on mismatches between two strands of parental polynucleotides. One embodiment, comprises a method for preparing polynucleotide fragments of DNA comprising formation of heteroduplex molecules by hybridizing polynucleotides. The invention also provides a method and process of forming fragments which can be used with any shuffling process or combination of shuffling processes.

REFERENCES:
patent: 5556750 (1996-09-01), Modrich et al.
patent: 5605793 (1997-02-01), Stemmer
patent: 5830721 (1998-11-01), Stemmer et al.
patent: 5965408 (1999-10-01), Short
patent: 6537746 (2003-03-01), Arnold et al.
patent: WO97/21537 (1997-06-01), None
patent: WO99/29902 (1999-06-01), None
Stemmer et al. Proc. Natl. Acad. Sci. 1994; 91: 10747-51.
Tsai-Wu et al. (Analytical Biochemistry, 1999, 275: 127-129).
Dianov et al,“Reconstitution of the DNA base excision-repair pathway”,Current Biology(1994), vol. 4, No. 12, pp. 1069-1078.
Stemmer, W., “DNA shuffling by random fragmentation for molecular evolution”,National Academy of Sciences(Oct. 1, 1994), vol. 91, pp. 10747-10751, Washington. XP002087463.

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