摘要:
This invention provides isolated polynucleotides that encode replication accessory factors. The invention also provides novel DNA replication accessory factors, which have been isolated and purified from the hyperthermophilic archaea Pyrococcus furiosus. The invention also provides various methods of enhancing a nucleic acid polymerase reaction comprising the addition of the replication accessory factors to the reaction. This invention further provides methods of synthesizing, amplifying, and mutagenizing nucleic acids of interest employing the replication accessory factors. This invention also provides kits comprising at least one of the replication accessory factors. This invention also provides kits useful for various methods that comprise at least one replication accessory factor.
摘要:
This invention provides improved electroporation methods for transferring nucleic acids of interest into host cells, wherein the host cells are (1) suspended in a substantially non-ionic solution comprising at least one sugar or sugar derivative, (2) mixed with the nucleic acids of interest, and (3) electrically treated. Also, this invention provides for kits used in the method for transferring nucleic acids into host cells.
摘要:
A method for functionally labeling large numbers of molecular species in a mixture of different species is provided. Each molecular species is labeled with a species-unique tag which allows for the rapid identification of each labeled species. The species-unique tag is identifiable by a uniquely identifiable property or characteristic.
摘要:
The invention provides improved methods of introducing site-directed mutations into circular DNA molecules of interest by means of mutagenic primer pairs. The mutagenic primer pairs are also selected so as to be either completely complementary or partially complementary to each other, wherein the mutation site (or sites) is located within the region of complementarity. A mutagenic primer pair is annealed to opposite strands of a circular DNA molecule containing the DNA sequence to be mutagenized. After annealing, first and second mutagenized DNA strands, each incorporating a member of the mutagenic oligonucleotide primer pair is synthesized by a linear cyclic amplification reaction. After the linear cyclic amplification mediated synthesis step is completed, the reaction mixture is treated with a selection enzyme that digests the parental template strands. After the digesting step, a double-stranded circular DNA intermediate is formed. The double-stranded circular DNA intermediates are transformed in suitable competent host cells and closed circular double-stranded DNA corresponding to the parental template molecules, but containing the desired mutation or mutations of interest, may be conveniently recovered from the transformed cells. The invention also provides kits for site-directed mutagenesis in accordance with methods of the present invention.
摘要:
L'invention concerne un procédé d'isolement, à partir du répertoire de gènes immunologique, d'un gène codant pour un récepteur capable de lier un ligand présélectionné. L'invention concerne également des récepteurs produits par le gène isolé selon ledit procédé, notamment des récepteurs catalytiques.
摘要:
The subject invention relates to compositions comprising an enzyme mixture which comprises a first enzyme and a second enzyme; where the first enzyme comprises a DNA polymerization activity and the second enzyme comprises an 3'-5' exonuclease activity and a reduced DNA polymerization activity. The invention also relates to the above compositions in kit format and methods for high fidelity DNA synthesis using the subject compositions of the invention.