The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

A method for isolating a mammalian genomic DNA replication origin, the method including: isolating the genomic DNA molecules; identifying 500 bp windows within the DNA molecules; isolating from the genomic DNA molecules the fragments that have a size from 500 pb up 6000 pb; selecting a DNA replication origin that is able, when contained in the DNA of an Eukaryotic cell, to produce nascent DNA, and to initiate DNA replication; and isolating the origin.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.

The invention relates to non-integrative lentiviral vectors and their use for the stable transgenesis of both dividing and no-dividing eukaryotic cells. The invention also provides methods for obtaining these vectors, the use of these vectors for the production of recombinant lentiviruses, and the use of these recombinant lentiviruses for obtaining a cell able to stably produce a product of interest.

The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.