摘要:
Methods for crystallizing a molecule of interest, such as a polypeptide, in complex with nucleic acid, including contacting the molecule of interest with selenium-derivatized nucleic acid and crystallizing the molecule of interest/selenium-derivatized nucleic acid complex are provided. Methods for determining the X-ray crystal structure of molecule of interest/selenium-derivatized nucleic acid complexes are also provided. Typically, the method of X-ray crystal structural determination includes selenium single-wavelength anomalous phasing of the selenium-derivatized nucleic acid. In some embodiments the phases for the X-ray crystal structure of the molecule of interest are not provided from another crystal. Also disclosed are methods of affecting a biological process by administering a functional nucleic acid to a cell or a subject and/or by bringing into contact a nuclease and a functional nucleic acid, where the functional nucleic acid is selenium-derivatized nucleic acid.
摘要:
The present invention relates to the of determining the sequence preference of DNA-RNA hybrid binding protein or its domain which comprises the following steps: a) contacting of the purified protein or its domain, with a mixture of a library of DNA-RNA hybrids substrates, wherein DNA-RNA hybrid substrates comprise randomized sequences in the central part, preferably randomized in 9 or 10 nucleotide positions, with flanking sequences fixed and allowing a tested protein or its domain to bind the sequence to which it has an affinity; b) separating unbound DNA-RNA hybrids by immobilization of protein or its domain, with bound DNA-RNA hybrid, to the resin, preferably glutathione agarose; c) removing the unbound hybrids; d) isolating the recombinant protein, together with the associated DNA-RNA hybrids, e) amplification of the isolated hybrid using PCR, preferably RT-PCR, wherein in the amplification reaction the primers complementary to invariant sequences flanking the randomized region are used, and wherein during the PCR reaction on one of the primer the sequence of RNA polymerase promoter is added in order to obtain double-stranded DNA for in vitro transcription with RNA polymerase; f) reverse transcription using reverse transcriptase that does not possess the RNase H activity and a DNA primer complementary to the 3' end of the RNA template in order to obtain a DNA-RNA hybrid..
摘要:
The present invention is in the field of CRISPR-Cas system for genome targeting. The present invention relates to new engineered Cas9 scaffolds and uses thereof. More particularly, the present invention relates to methods for genome targeting, cell engineering and therapeutic application. The present invention also relates to vectors, compositions and kits in which the new Cas9 scaffolds of the present invention are used.
摘要:
The present invention relates to methods for using mammalian RNase H, including human RNase H, and compositions thereof, particularly for reduction of a selected cellular RNA target via antisense technology. A novel human RNAse HII polypeptide and the polynucleotide sequence encoding it are also disclosed.
摘要:
In certain embodiments, the present disclosure provides compounds and methods of increasing the amount or activity of a target protein in a cell. In certain embodiments, the compounds comprise a translation suppression element inhibitor. In certain embodiments, the translation suppression element inhibitor is a uORF inhibitor. In certain embodiments, the uORF inhibitor is an antisense compound.
摘要:
The invention provides a provides improvements to assays that employ RNase H cleavage for biological applications related to nucleic acid amplification and detection, where the RNase H has been reversibly inactivated.
摘要:
The present invention relates to polymerase HBV mutant polypeptides comprising a mutated polymerase domain which is functionally disrupted for polymerase activity and fusion proteins comprising such polymerase mutant polypeptide. The present invention also relates to a nucleic acid molecule and an expression vector for expressing said polymerase mutant polypeptide as well as a composition which can be used for eliciting an immune response to HBV with the goal of providing a protective or therapeutic effect against HBV infection.
摘要:
Methods for crystallizing a molecule of interest, such as a polypeptide, in complex with nucleic acid, including contacting the molecule of interest with selenium-derivatized nucleic acid and crystallizing the molecule of interest/selenium-derivatized nucleic acid complex are provided. Methods for determining the X-ray crystal structure of molecule of interest/selenium-derivatized nucleic acid complexes are also provided. Typically, the method of X-ray crystal structural determination includes selenium single-wavelength anomalous phasing of the selenium-derivatized nucleic acid. In some embodiments the phases for the X-ray crystal structure of the molecule of interest are not provided from another crystal. Also disclosed are methods of affecting a biological process by administering a functional nucleic acid to a cell or a subject and/or by bringing into contact a nuclease and a functional nucleic acid, where the functional nucleic acid is selenium-derivatized nucleic acid.
摘要:
The present invention relates to polymerase HBV mutant polypeptides comprising a mutated polymerase domain which is functionally disrupted for polymerase activity and fusion proteins comprising such polymerase mutant polypeptide. The present invention also relates to a nucleic acid molecule and an expression vector for expressing said polymerase mutant polypeptide as well as a composition which can be used for eliciting an immune response to HBV with the goal of providing a protective or therapeutic effect against HBV infection.
摘要:
The present invention relates to the of determining the sequence preference of DNA-RNA hybrid binding protein or its domain which comprises the following steps: a) contacting of the purified protein or its domain, with a mixture of a library of DNA-RNA hybrids substrates, wherein DNA-RNA hybrid substrates comprise randomized sequences in the central part, preferably randomized in 9 or 10 nucleotide positions, with flanking sequences fixed and allowing a tested protein or its domain to bind the sequence to which it has an affinity; b) separating unbound DNA-RNA hybrids by immobilization of protein or its domain, with bound DNA-RNA hybrid, to the resin, preferably glutathione agarose; c) removing the unbound hybrids; d) isolating the recombinant protein, together with the associated DNA-RNA hybrids, e) amplification of the isolated hybrid using PCR, preferably RT-PCR, wherein in the amplification reaction the primers complementary to invariant sequences flanking the randomized region are used, and wherein during the PCR reaction on one of the primer the sequence of RNA polymerase promoter is added in order to obtain double-stranded DNA for in vitro transcription with RNA polymerase; f) reverse transcription using reverse transcriptase that does not possess the RNase H activity and a DNA primer complementary to the 3' end of the RNA template in order to obtain a DNA-RNA hybrid..