摘要:
A new type of transgene system is disclosed which allows efficient protein expression in a target host such as a plant, but avoids the undesirable result of the migration of the transgene into related host systems and/or to the environment via the pollen. The methods described herein may also be applied to the expression of virtually any protein of interest (e.g. a toxic protein) in eukaryotic (yeast, insect, mammalian cells, etc.) and prokaryotic (E. coli, etc.) organisms.
摘要:
A new type of transgene system is disclosed which allows efficient protein expression in a target host such as a plant, but avoids the undesirable result of the migration of the transgene into related host systems and/or to the environment via the pollen. The methods described herein may also be applied to the expression of virtually any protein of interest (e.g. a toxic protein) in eukaryotic (yeast, insect, mammalian cells, etc.) and prokaryotic (E. coli, etc.) organisms.
摘要:
Compositions and methods are provided for inhibiting a polymerase from replicating non target DNA at a temperature below the amplification reaction temperature. The inhibitor is a synthetic nucleic acid which is single stranded but folds to form at least one double stranded region designed to melt at a temperature which is lower than the amplification reaction temperature, and at least one single stranded region where the single stranded region at the 5' end contains at least one uracil or inosine and optionally a sequence at the 3' end contains one or more derivative nucleotide or linkages.
摘要:
Compositions and methods are provided for ligating polynucleotides having a length that is greater than 8 nucleotides on an RNA splint. The ligation reaction provides consistent results in high or low ATP concentrations. The reaction can occur rapidly and is generally at least 10 fold more efficient than T4DNA ligase under optimal conditions for T4DNA ligase and the reaction time is less than 6 hours for example, less than 1 hour.
摘要:
Methods and compositions are provided for repairing a polynucleotide so that it can be copied with improved fidelity and/o yield in, for example, an amplification reaction. This involves the use of a reaction mixture that includes a DNA ligase and an effective amount of at least one endonuclease as well as a cofactor selected from NAD+ or ATP.
摘要:
A recombinant BSA (rBSA) that (a) substantially lacks deoxyribonuclease activity as determined by incubating rBSA with linear DNA overnight and gel electrophoresis, (b) lacks animal viruses associated with animal-derived cell growth supplements; and (c) is capable of stabilizing DNA proteins is provided. Methods for making the rBSA and using it to stabilize enzymes are also provided.