摘要:
A heat labile alkaline phosphatase enzyme and methods of using the same and kits including the same are disclosed. Specifically, a nucleotide sequence of, peptide sequence of, methods of using, and kits comprising, a heat labile alkaline phosphatase isolated from Colwellia psychrerythraea are provided. Methods of over-expression and purification of the recombinant alkaline phosphatase and mutants thereof are also disclosed. Methods of over-expressing and purifying commercially useful quantities of active recombinant heat labile alkaline phosphatase fusion enzymes from C. psychrerythraea, wherein the fusion enzymes comprise one or more heterologous leader sequences are disclosed. The disclosed C. psychrerythraea heat labile alkaline phosphatase has properties similar to shrimp alkaline phosphatase and can be substituted for shrimp alkaline phosphatase in assays involving the same.
摘要:
A system and method for forming encoded microparticles is described. One embodiment includes a system for forming encoded microparticles, the system comprising a step and repeat exposure system capable of performing a method comprising: printing at a first time a first portion of a code of a microparticle; and printing at a second time after the first time a second portion of the code of the microparticle; and a computer readable medium having a sequence of computer executable instructions for controlling the step and repeat exposure system to perform said method.
摘要:
Nucleic acid labeling compounds are disclosed. The compounds are synthesized by condensing a heterocyclic derivative with a cyclic group (e.g. a ribofuranose derivative). The labeling compounds are suitable for enzymatic attachment to a nucleic acid, either terminally or internally, to provide a mechanism of nucleic acid detection.
摘要:
Methods are provided for detecting and optionally quantitating multiple analytes, including nucleic acid and/or polypeptide analytes, in particle-based assays that can be highly multiplexed. Compositions, systems, and kits related to the methods are also featured.
摘要:
The present invention provides an array of polymers and methods of forming arrays of polymers by providing a substrate having a first layer including one or more dielectric coatings on a solid support and a second layer including a plurality of polymers disposed on the first layer. The invention also provides methods for forming an array of polymers on a substrate using light-directed synthesis by providing a substrate having a first layer including one or more dielectric coatings on a solid support, derivatizing the first layer by contacting the first layer with a silanation reagent, and a second layer disposed on said first layer wherein the second layer includes functional groups protected with a photolabile protecting group.
摘要:
The present invention provides massively parallel oligonucleotide synthesis and purification for applications that utilize large collections of defined high-fidelity oligonucleotides (e.g., from about 101 to about 105 different sequences, generally between 25-160 bases in length).
摘要:
Disclosed are methods, compositions and kits for amplifying signals for detecting the presence, quantity and/or sequence of nucleic acids and proteins, as well as methods, compositions and kits for increasing the number of such targets simultaneously detectable in a sample. Detection may be, for instance, in vivo, in cellulo or in situ. Amplification of signal is achieved by way of hybridization of nucleic acid label probe systems and structures. Increase in target multiplex capacity is achieved by way of varying the type of labels utilized in the nucleic acid label probe system.
摘要:
A system and method for forming encoded microparticles is described. One embodiment includes a method of forming an encoded microparticle, the method comprising: depositing and patterning a plurality of layers on a substrate so as to form a plurality of microparticles, each microparticle comprising a plurality of separate segments aligned along an axis and representing a code; and releasing the microparticles in order to separate the microparticles from the substrate.
摘要:
Compositions and methods for amplifying selected polynucleotides, including DNA and RNA, particularly in multiplex amplification reactions using common primers amplification. Generally, methods of the invention employ multiple steps such as template-specific hybridization, a linear amplification, partial degradation of nucleic acid, and ligation. At the end of the process the sequences of selected polynucleotides are flanked by the common sequences which can be used for exponential amplification using common primers. In some aspects the polynucleotides are associated with a barcode and the presence of the barcode is detected to measure the amount of the polynucleotide.
摘要:
The present invention provides novel processes for the large scale preparation of arrays of polymer sequences wherein each array includes a plurality of different, positionally distinct polymer sequences having known monomer sequences. The methods of the invention combine high throughput process steps with high resolution photolithographic techniques in the manufacture of polymer arrays.