摘要:
Inverse Linkage Oligonucleotides ("ILO") useful in enzymatic process are disclosed. Particularly preferred ILOs are amenable to enzymatic elongation from either, or most preferably, both termini. In a particularly preferred embodiment, each terminus of an ILO has an enzymatically functional 3' group. Accordingly, under appropriate conditions and in the presence of, e.g., dNTPs, enzyme, sample DNA, and ILO comprising a first region complementary to a first region of the sample DNA and a second region complementary to a second, different region of the sample DNA, exponential amplification of the sample DNA can be effectuated.
摘要:
Benzazoles, including benzatriazoles and benzimidazoles are employed in phospate triester oligonucleotide synthesis. The benzazoles form arylbenzazolide coupling agents, and phosphorodibenzazolides. Processes employing these reagents are also disclosed.
摘要:
The present invention provides a family of dark quenchers, termed Black Hole Quenchers (“BHQs”), that are efficient quenchers of excited state energy but which are themselves substantially non-fluorescent. Also provided are methods of using the BHQs, probes incorporating the BHQs and methods of using the probes.
摘要:
The present invention provides a family of dark quenchers, termed Black Hole Quenchers (“BHQs”), that are efficient quenchers of excited state energy but which are themselves substantially non-fluorescent. Also provided are methods of using the BHQs, probes incorporating the BHQs and methods of using the probes.
摘要:
The present invention provides a family of dark quenchers, termed Black Hole Quenchers (“BHQs”), that are efficient quenchers of excited state energy but which are themselves substantially non-fluorescent. Also provided are methods of using the BHQs, probes incorporating the BHQs and methods of using the probes.
摘要:
The present invention is directed to an improved column for use in solid phase synthesis or purification. In a specific embodiment, the column is a disposable plastic column for use in solid phase synthesis or purification of complex chemicals, such as biomolecules and more specifically oligonucleotides. In some embodiments, the column has a top orifice with a sufficient diameter so that a fluid line or a multiple fluid line bundle may dispense fluids into the column with great efficiency. The column has an upper cavity portion configured and sized to render it compatible with dispensing pippetors, so that it can be used as a pipette tip or a pipettor can be used to aspirate the column. The column has a lower cavity portion with a shoulder for ready placement of a lower frit to contain the solid support in a central cavity portion of the column. An upper frit can be conveniently placed in the central cavity portion to seal the solid phase resin. The lower end tip of the column is configured as a luer-type fitting to provide a male luer connection. The upper cavity portion is configured to interface with the male luer of another column, so that two or more columns to be connected in series.
摘要:
The present invention generally relates to imaging single molecules, or one or more collections of single molecules, and methods related to the imaging. In a method aspect, the present invention provides a method of imaging single molecules. The method comprises the steps of: a) exposing a test sample to a probe, wherein the probe comprises a first portion that specifically binds to a target molecule and a second portion that is detectable as the result of one or more chemical groups that interact with light at one or more wavelengths, wherein the probe binds to a target molecule to provide a complex; b) exposing the complex to one or more wavelengths of light that interact with the one or more chemical groups; c) detecting a result from the interacting of one or more wavelengths of light that interact with the one or more chemical groups to provide an image of one or more single molecules. The image possesses a resolution better than 450 nm over a view field area of at least 1×105 μm2, and wherein the image is obtained in a single detection step without variation of any detection settings.
摘要:
The present invention provides a family of dark quenchers, termed Black Hole Quenchers (“BHQs”), that are efficient quenchers of excited state energy but which are themselves substantially non-fluorescent. Also provided are methods of using the BHQs, probes incorporating the BHQs and methods of using the probes.
摘要:
The present invention provides luminescent metal ion complexes for use in a wide range of biological and chemical studies. The luminescent metal ion complexes of the invention comprise a metal ion chelating component covalently bound to a carrier molecule. Also provided are methods of making and using the luminescent metal ion complexes.
摘要:
The present invention provides a family of dark quenchers, termed Black Hole Quenchers (“BHQs”), that are efficient quenchers of excited state energy but which are themselves substantially non-fluorescent. Also provided are methods of using the BHQs, probes incorporating the BHQs and methods of using the probes.