摘要:
This invention is related to bacterial engineering and the heterologous expression of useful compounds. In particular, the invention relates to a heterologous host that has been engineered for expression of a gene which is capable of polyketide or non-ribosomal peptide synthesis. Methods of treating cancer are also disclosed.
摘要:
The invention provides a method for the heterologous expression of a secondary metabolite encoded by a biosynthetic pathway. Also provided is a method for introducing a large sized DNA molecule into the chromosome of a heterologous host using a transposable element. Novel myxochromide S derivatives are also provided.
摘要:
The invention relates to methods for cloning DNA molecules using recE/recT-mediated homologous recombination mechanism between at least two DNA molecules where one DNA molecule is a circular or linear DNA molecule and the second DNA molecule is a circular DNA molecule, and the second DNA molecule contains two regions with sequence homology to the first DNA molecule. Competent cells and vectors are also described.
摘要:
The invention relates to methods for cloning DNA molecules using recE/recT-mediated homologous recombination mechanism between at least two DNA molecules where one DNA molecule is a circular or linear DNA molecule and the second DNA molecule is a circular DNA molecule, and the second DNA molecule contains two regions with sequence homology to the first DNA molecule. Competent cells and vectors are also described.
摘要:
The invention relates to methods for cloning DNA molecules using recE/recT-mediated homologous recombination mechanism between at least two DNA molecules where one DNA molecule is a circular or linear DNA molecule and the second DNA molecule is a circular DNA molecule, and the second DNA molecule contains two regions with sequence homology to the first DNA molecule. Competent cells and vectors are also described.
摘要:
A portable reel jack for supporting and lifting large spools of heavy cable, wire and the like includes a hydraulic lift with an extendable piston rod. A stanchion that is pivotally connected to the piston rod carries a spool support and remains vertically oriented during movement of the piston rod relative to the cylinder. Moreover, when the piston rod moves vertically away from the base in a lifting motion, then the stanchion moves laterally away from the hydraulic cylinder. As the spool is being lifted off of the ground by the hydraulic jack, the load-bearing location of the rod that carries the spool moves increasingly farther away from where the operator is standing to operate the lifting action of the portable reel jack. Additionally, the spool support has the flexibility of three different height elevations for carrying the rod on which the spool is in turn carried. This three-tiered configuration permits the operator to select the lowest possible support position for the rod and thus enables the vertical movement of the jack's piston rod to be minimized for a spool of any given circumference.
摘要:
An invention is described that permits the regulation of recombination in cells, organisms or appropriate cell-free systems. The invention involves creating fusion proteins between recombinase proteins, or components of recombinase systems, and ligand binding domains derived from nuclear receptors. The fusion proteins show little recombinase activity in the absence of the ligand that binds to the ligand binding domain. Upon binding of the ligand, recombinase activity is induced. The invention provides a practical means to regulate recombination in cells and organisms and, by linking ligand binding to recombination, provides a simple means whereby ligand binding can be measured as recombination achieved.