Method for increasing the processivity of a DNA- or RNA-dependent polymerase and compositions therefor
OwnerJerry Pelletierinventor
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OwnerJerry Pelletierinventor
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The present invention relates to genetic engineering, and especially to cDNA synthesis and cDNA cloning. More specifically, a method is presented for increasing the processivity of a DNA- or RNA-dependent RNA- or DNA-polymerase comprising an addition of a general nucleic acid binding protein. In particular, the present invention relates to methods for increasing the processivity of reverse transcriptase (RT) E. coli DNA polymerase and T7 DNA polymerase using a nucleic acid binding protein such as Ncp7, recA, SSB and T4gp32. The invention further relates to assays to identify and select agents capable of increasing the processivity of a DNA or RNA-dependent polymerase, such as MMTV RT, AMV RT, T7 DNA polymerase and E-coli DNA polymerase. In a particularly preferred embodiment, the invention relates to a method for increasing the generation of full-length cDNA clones using a nucleic acid binding protein such as Ncp7, recA, SSB and T4gp32.
A method to increase the processivity of a RNA-dependent DNA polymerase comprising, an addition of an effective amount of a general RNA binding protein to a nucleic acid polymerization mixture comprising a polymerase, whereby said addition of RNA binding protein enables an increase of the processivity of said polymerase.
An improved method of cDNA synthesis, the improvement consisting in an addition of a RNA binding protein to the nucleic acid polymerization mixture comprising the reverse transcriptase, whereby said addition of general RNA binding protein enables an increase of the processivity of said reverse transcriptase, thereby enabling a significant increase in the production of full length cDNAs.
Use of a general RNA binding protein as an additive to improve the processivity of a nucleic acid-dependent polymerase, comprising an incubation of said polymerase in the presence of a processivity-improving amount of said RNA binding protein.
Use of a general RNA binding protein as an additive to improve the proportion of full length cDNA clones converting RNA to cDNA utilizing a reverse transcriptase, comprising an incubation of said reverse transcriptase in the presence of an effective amount of said general RNA binding protein.
A method to identify agents which can increase the processivity of a DNA- or RNA-dependent polymerase, comprising:
A method of selecting an agent which is capable of increasing the processivity of a DNA- or RNA-dependent polymerase, comprising:
A polymerization processivity-increasing composition, comprising a template nucleic acid, a polymerase and a general RNA binding protein, together with a suitable polymerization buffer.
A method to increase the processivity of RNA-dependent RNA polymerase comprising an addition of an effective amount of general RNA binding protein to a nucleic acid polymerization mixture comprising said RNA-dependent RNA polymerase, whereby said addition of general RNA binding protein enables an increase of the processivity of said polymerase.
A method to increase the processivity of a DNA-dependent DNA polymerase or DNA-dependent RNA polymerase comprising an addition of an effective amount of general DNA binding protein to a nucleic acid polymerization mixture comprising one of said polymerase, whereby said addition of a general DNA binding protein enables an increase of the processivity of one of said polymerase.
An improved method of cDNA synthesis, the improvement consisting in an addition of a DNA binding protein to the nucleic acid polymerization mixture comprising the DNA polymerase, whereby said addition of general DNA binding protein enables an increase of the processivity of said DNA polymerase during second strand systhesis, thereby enabling a significant increase in the production of full length cDNAs.
Use of a general DNA binding protein as an additive to improve the processivity of a nucleic acid-dependent polymerase, comprising an incubation of said polymerase in the presence of a processivity-improving amount of said general DNA binding protein.
Use of a general nucleic acid binding protein as an additive to improve the proportion of full length cDNA clones converting RNA to cDNA utilizing a reverse transcriptase, comprising an incubation of said reverse transcriptase in the presence of an effective amount of said general nucleic acid binding protein.
A method to increase the processivity of RNA-dependent DNA polymerase comprising an addition of an effective amount of general DNA binding protein to a nucleic acid polymerization mixture comprising a polymerase, whereby said addition of general DNA binding protein enables an increase of the processivity of said polymerase.
Dependencies are inferred from the claim text.