Abstract: The present invention provides compositions and methods for the detection and characterization of HPV sequences. More particularly, the present invention provides compositions, methods and kits for using invasive cleavage structure assays (e.g. the INVADER assay) to screen nucleic acid samples, e.g., from patients, for the presence of any one of a collection of HPV sequences. The present invention also provides compositions, methods and kits for screening sets of HPV sequences in a single reaction container.

Abstract: The present invention relates to compositions and methods for the detection and characterization of nucleic acid sequences and variations in nucleic acid sequences. The present invention relates to methods for forming a nucleic acid cleavage structure on a solid support and cleaving the nucleic acid cleavage structure in a site-specific manner. For example, in some embodiments, a 5? nuclease activity from any of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof. The present invention further relates to methods and devices for the separation of nucleic acid molecules based on charge. The present invention also provides methods for the detection of non-target cleavage products via the formation of a complete and activated protein binding region. The invention further provides sensitive and specific methods for the detection of nucleic acid from various viruses in a sample.

Abstract: The present invention relates to methods and compositions for analyzing nucleic acids, and in particular, methods and compositions for detection and characterization of nucleic acid sequences and sequence changes using mass spectrometry. The present invention also provides methods and compositions for identifying oligonucleotides with desired hybridization properties to nucleic acid targets containing secondary structure using mass spectrometry.

Abstract: The present invention relates to surface modifications and linker attachments. For example, the present invention provides surface modification and linker chemistry that facilitates manufacture and use of microarrays, including nucleic acid and protein microarrays. The present invention also relates to array spotting through non-aqueous liquids.

Abstract: The present invention provides methods, compositions, and kits for detecting the presence or absence of target sequences in a sample, where the sample also contains interfering sequences that are similar or identical to the target sequences. In particular, the present invention provides blocker oligonucleotides that at least partially inhibit the formation of invasive cleavage structures with the interfering sequences but do not substantially inhibit the formation of invasive cleavage structures with the target sequences.

Abstract: The present invention provides novel cleavage agents for the cleavage and modification of nucleic acid. The cleavage agents find use, for example, for the detection and characterization of nucleic acid sequences and variations in nucleic acid sequences. In some embodiments, an endonuclease activity is used to cleave a target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Abstract: The present invention provides compositions and methods for the detection and characterization of HCV sequences. More particularly, the present invention provides compositions, methods and kits for using invasive cleavage structure assays (e.g. the INVADER assay) to screen nucleic acid samples, e.g., from patients, to determine HCV genotype.

Abstract: The present invention relates to compositions and methods for the preparation of modified nucleic acids. In particular, the present invention provides novel reagents and chemistries for the generation of linkers, modified phosphoramidites, and modified solid supports.

Abstract: The present invention provides novel cleavage agents and polymerases for the cleavage and modification of nucleic acid. The cleavage agents and polymerases find use, for example, for the detection and characterization of nucleic acid sequences and variations in nucleic acid sequences. In some embodiments, the 5? nuclease activity of a variety of enzymes is used to cleave a target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Abstract: The present invention relates to nucleic acid synthesizers and methods of using and modifying nucleic acid synthesizers. For example, the present invention provides highly efficient, reliable, and safe synthesizers that find use, for example, in high throughput and automated nucleic acid synthesis, as well as methods of modifying pre-existing synthesizers to improve efficiency, reliability, and safety.

Abstract: The present invention relates to compositions and methods for the detection and characterization of nucleic acid sequences and variations in nucleic acid sequences. The present invention relates to methods for forming a nucleic acid cleavage structure on a solid support and cleaving the nucleic acid cleavage structure in a site-specific manner. For example, in some embodiments, a 5? nuclease activity from any of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Abstract: The present invention relates to methods and compositions for analyzing nucleic acids. In particular, the present invention provides methods and compositions for the detection and characterization of nucleic acid sequences and sequence changes. The methods of the present invention permit the detection and/or identification of genetic polymorphism such as those associated with human disease and permit the identification of pathogens (e.g., viral and bacterial strain identification).

Abstract: A method is disclosed for modifying an oligonucleotide, which method has application to the detection of a polynucleotide analyte. An oligonucleotide is reversibly hybridized with a polynucleotide, for example, a polynucleotide analyte, in the presence of a 5?-nuclease under isothermal conditions. The polynucleotide analyte serves as a recognition element to enable a 5?-nuclease to cleave the oligonucleotide to provide (i) a first fragment that is substantially non-hybridizable to the polynucleotide analyte and (ii) a second fragment that lies 3? of the first fragment (in the intact oligonucleotide) and is substantially hybridizable to the polynucleotide analyte. At least a 100-fold molar excess of the first fragment and/or the second fragment are obtained relative to the molar amount of the polynucleotide analyte. The presence of the first fragment and/or the second fragment is detected, the presence thereof indicating the presence of the polynucleotide analyte.

Abstract: The present invention provides methods, kits, and compositions related to human papillomavirus (HPV) primers, which may be used, for example, in nucleic acid detection assays for use in basic research, clinical research, and for the development of clinical detection assays.

Abstract: The present invention relates to means for the detection and characterization of nucleic acid sequences, as well as variations in nucleic acid sequences. The present invention also relates to methods for forming a nucleic acid cleavage structure on a target sequence and cleaving the nucleic acid cleavage structure in a site-specific manner. The structure-specific nuclease activity of a variety of enzymes is used to cleave the target-dependent cleavage structure, thereby indicating the presence of specific nucleic acid sequences or specific variations thereof.

Abstract: The present invention provides plate spinner systems and devices, and methods of using such systems and devices. In preferred embodiments, the systems and devices contain one or more of the following features: a manual power generating component (e.g. a hand crank power supply); a rotor assembly composed of a rotor with brackets for securing a sample holding device such as a sample processing device or a micro-titer plate; a rotor hub that supports nearly all of the weight of the rotor assembly; a manually operated brake; and a kettle cover containing a rotor tachometer.

Abstract: The present invention provides compositions and methods for the detection and characterization of HPV sequences. More particularly, the present invention provides compositions, methods and kits for using invasive cleavage structure assays (e.g. the INVADER assay) to screen nucleic acid samples, e.g., from patients, for the presence of any one of a collection of HPV sequences. The present invention also provides compositions, methods and kits for screening sets of HPV sequences in a single reaction container.

Abstract: The present invention relates to compositions and methods for the detection and characterization of nucleic acid sequences and variations in nucleic acid sequences. The present invention relates to methods for amplifying a synthetic DNA from a target nucleic acid, forming a nucleic acid cleavage structure on the synthetic DNA, and detecting cleavage of the nucleic acid cleavage structure as an indicator of the preset of the target nucleic acid.

Abstract: The present invention relates to novel phosphoramidites, including positive and neutrally charged compounds. The present invention also provides charge tags for attachment to materials including solid supports and nucleic acids, wherein the charge tags increase or decrease the net charge of the material. The present invention further provides methods for separating and characterizing molecules based on the charge differentials between modified and unmodified materials.