The present invention provides methods, compositions, mixtures and kits utilizing deoxynucleoside triphosphates comprising a 3′-O position capped by a group comprising methylenedisulfide as a cleavable protecting group and a detectable label reversibly connected to the nucleobase of said deoxynucleoside. Such compounds provide new possibilities for future sequencing technologies, including but not limited to Sequencing by Synthesis.
Novel iminium-type coupling agents containing proton acceptors in their iminium moiety, which can be used beneficially as coupling agents in various chemical polypeptide and/or polynucleotide syntheses, and are particularly useful as yield enhancing and racemization suppressing coupling agents for use in peptide syntheses, are disclosed. Further disclosed are a process of preparing such iminium-type coupling agents and their use in the preparation of polypeptides and/or polynucleotides.
This invention relates a nucleic acid target amplification and detection method which operates at a single temperature and makes use of a polymerase in conjunction with an endonuclease that will nick the polymerized strand such that the polymerase will displace the strand without digestion while generating a newly polymerized strand.
The use of microfluidic systems in the electrochemical detection of target analytes
申请人:Clinical Micro Sensors
公开号:EP1391241A1
公开(公告)日:2004-02-25
Figure (1) depicts some preferred embodiments of the invention. Figure (1A) depicts a solid support (5) that has a sample inlet port (10), a first microchannel (15), a storage module (25) (for example, for assay reagents) with a second microchannel (20). The second microchannel (20B), may be in fluid contact directly with the detection module (30) comprising a detection electrode (35), or (20A), a self-assembled monolayer and a binding ligand. Figure (1B) depicts a sample handling well (40) and a second storage well (25A) with a microchannel (20) to the sample handling well (40). For example, the sample handling well (40) could be a cell lysis chamber and the storage well (25A) could contain lysis reagents. Figure (1C) depicts a sample handling well (40) that is a cell capture or enrichment chamber, with an additional reagent storage (25B) for elution buffer. Figure (1D) depicts the addition of a reaction module (45), with a storage module (25C), for example for storage of amplification reagents. Optional waste module (26) is connected to the reaction module (45) via a microchannel (27). All of these embodiments may additionally comprise valves, waste wells, and pumps, including additional electrodes.
Detection of nucleic acid reactions on bead arrays
申请人:Illumina, Inc.
公开号:EP1923472A1
公开(公告)日:2008-05-21
The present invention provides a method of sequencing a plurality of target nucleic acids each comprising a first domain and an adjacent second domain, in which a plurality of hybridization complexes each comprising a target sequence and a sequencing primer hybridize to the first domain of said target sequence, the hybridization complexes are attached to microspheres,