摘要:
A simple method for modifying genes in a recombination deficient host cell is disclosed. Such modifications include generating insertion, deletions, substitutions, and/or point mutations at any chosen site in the independent origin based cloning vector. The modified gene can be contained in an independent origin based cloning vector that is used to introduce a modified heterologous gene into a cell. Such a modified vector may be used in the production of a germline transmitted transgenic animal, or in gene targeting protocols in eukaryotic cells.
摘要:
A method of externalizing proteins from the periplasmic space of gram-negative bacteria and in particular, E. coli and its relatives, comprising utilizing bacteria which have a phage gene, coding for a protein (such as gene III protein) or a mutant bacterial gene (such as a gene coding for a membrane function) which causes perturbation of the outer bacterial membrane resulting in leakage of proteins in the periplasmic space from the cell.
摘要:
In the present invention the bottle or container to be secured is provided with a plastic sleeve with a clear plastic top, providing a view of a safety capsule. The plastic sleeve may be provided with small holes, allowing air to enter within the air space underneath the plastic sleeve. The safety capsule is kept in place with an attachment point to the plastic sleeve. If any tampering occurs such as using an injection needle to enter the bottle through the cork, the safety capsule may be punctured, casing its color to change (e.g., from white to red). This color change is a warning to the end user and seller that a toxic attack to the contents may have occurred.
摘要:
A simple method for modifying genes in a recombination deficient host cell is disclosed. Such modifications include generating insertions, deletions, substitutions, and/or point mutations at any chosen site in the independent origin based cloning vector. The modified gene is contained in an independent origin based cloning vector that is used to introduce a modified heterologous gene into a cell. Such a modified vector may be used in the production of a germline transmitted transgenic animal, or in gene targeting protocols in eukaryotic cells. In particular, high throughput methodology is provided for generating the modified the independent origin based cloning vectors of the present invention.
摘要:
A simple method for modifying genes in a recombination deficient host cell is disclosed. Such modifications include generating insertions, deletions, substitutions, and/or point mutations at any chosen site in the independent origin based cloning vector. The modified gene is contained in an independent origin based cloning vector that is used to introduce a modified heterologous gene into a cell. Such a modified vector may be used in the production of a germline transmitted transgenic animal, or in gene targeting protocols in eukaryotic cells. In particular, high throughput methodology is provided for generating the modified the independent origin based cloning vectors of the present invention.