摘要:
The invention generally relates to methods for maintaining the integrity and identification of a nucleic acid template in a multiplex sequencing reaction. In certain embodiments, methods of the invention involve obtaining a template nucleic acid, incorporating a pair of sequence identifiers into the template, and sequencing the template.
摘要:
The invention provides methods and compositions for inhibiting proliferation of a modified host cell outside of a designated process condition. Compositions and methods for providing a host cell having reduced viability when exposed to natural conditions external to a controlled environment are disclosed.
摘要:
Methods and compositions are provided for manipulating the genome of host cell to produce at least one exogenous gene product. Also provided are methods and composition for producing a programmable cell comprising a plurality of exogenous genes, wherein each exogenous gene is under the control of a disrupted regulatory sequence and wherein the disrupted regulatory sequences are restored by in vivo recombination. Preferably, the gene of interest is under the control of a genetically altered promoter which sequence recombination effects the expression of the exogenous gene(s).
摘要:
The invention relates to a method for detecting a double-stranded region in a nucleic acid by (1) providing two separate, adjacent pools of a medium and a interface between the two pools, the interface having a channel so dimensioned as to allow sequential monomer-by-monomer passage of a single-stranded nucleic acid, but not of a double-stranded nucleic acid, from one pool to the other pool; (2) placing a nucleic acid polymer in one of the two pools; and (3) taking measurements as each of the nucleotide monomers of the single-stranded nucleic acid polymer passes through the channel so as to differentiate between nucleotide monomers that are hybridized to another nucleotide monomer before entering the channel and nucleotide monomers that are not hybridized to another nucleotide monomer before entering the channel.
摘要:
The invention provides methods and compositions for inhibiting proliferation of a modified host cell outside of a designated process condition. Compositions and methods for providing a host cell having reduced viability when exposed to natural conditions external to a controlled environment are disclosed.
摘要:
Disclosed are methods for synthesizing and/or assembling at least one polynucleotide product having a predefined sequence from a plurality of different oligonucleotides. In exemplary embodiments, the methods involve synthesis and/or amplification of different oligonucleotides immobilized on a solid support, release of synthesized/amplified oligonucleotides in solution to form droplets, recognition and removal of error-containing oligonucleotides, moving or combining two droplets to allow hybridization and/or ligation between two different oligonucleotides, and further chain extension reaction following hybridization and/or ligation to hierarchically generate desired length of polynucleotide products.
摘要:
The invention relates to a method for detecting a double-stranded region in a nucleic acid by (1) providing two separate, adjacent pools of a medium and a interface between the two pools, the interface having a channel so dimensioned as to allow sequential monomer-by-monomer passage of a single-stranded nucleic acid, but not of a double-stranded nucleic acid, from one pool to the other pool; (2) placing a nucleic acid polymer in one of the two pools; and (3) taking measurements as each of the nucleotide monomers of the single-stranded nucleic acid polymer passes through the channel so as to differentiate between nucleotide monomers that are hybridized to another nucleotide monomer before entering the channel and nucleotide monomers that are not hybridized to another nucleotide monomer before entering the channel.
摘要:
Disclosed are methods of manufacturing synthetic DNAs, that is, DNAs made at least in significant part by chemical synthesis of polynucleotide polymers. Also provided are methods for assembling plural DNAs in the same pool by multiplexed assembly of synthetic oligonucleotides. In exemplary embodiments, the methods involve pre-amplification of one or more oligonucleotides using “universal” primers, reduction of the error rate in oligonucleotide and/or polynucleotide products, and sequence optimization and oligonucleotides design.