Invention Grant
US09399766B2 Recombinant polymerases for incorporation of protein shield nucleotide analogs 有权
用于掺入蛋白质屏蔽核苷酸类似物的重组聚合酶

Recombinant polymerases for incorporation of protein shield nucleotide analogs
Abstract:
Provided are compositions comprising recombinant DNA polymerases that include amino acid substitutions, insertions, deletions, and/or exogenous features that confer modified properties upon the polymerase for enhanced single molecule sequencing or nucleic acid amplification. Such properties include enhanced performance with large nucleotide analogs, increased stability, increased readlength, and improved detection of modified bases, and can also include resistance to photodamage, enhanced metal ion coordination, reduced exonuclease activity, reduced reaction rates at one or more steps of the polymerase kinetic cycle, decreased branching fraction, altered cofactor selectivity, increased yield, increased accuracy, altered speed, increased cosolvent resistance, and the like. Also provided are nucleic acids which encode the polymerases with the aforementioned phenotypes, as well as methods of using such polymerases to make a DNA or to sequence a DNA template.
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