Stratagene

About: Stratagene is a based out in . It is known for research contribution in the topics: Nucleic acid & Gene. The organization has 161 authors who have published 232 publications receiving 17223 citations.

Methods and compositions for high level expression of a heterologous protein with poor codon usage

Abstract: High level expression of heterologous proteins in host cells is frequently limited by the presence of rarely utilized codons, due to depletion of the internal tRNA pool and stalling of translation. This invention provides expression host cells generated by introduction of a vector for the expression of an array of tRNA genes that are rare in the host cells. The modified host cells are capable of efficiently supporting expression of selected recombinant genes which otherwise would be limited by the presence of rare codons.

Compositions and methods for polynucleotide detection

Abstract: The present invention relates to compositions comprising probes for the detection of a target polynucleotide, and methods for detecting the amount of a target polynucleotide using the subject composition. In particular, the subject method involves the use of both target-hybridizing probes and non-target-hybridizing probes, where the probes generate a detectable signal (e.g., detectable by FRET) for the target polynucleotide detection.

Versatile Epitope Tagging Vector for Gene Expression in Mammalian Cells

Abstract: We have constructed an epitope-tagging vector, pCMV-Tag 1, for gene expression in mammalian cells. This vector, which allows for N-terminal, C-terminal and internal tagging of the gene product of interest with the FLAG® and/or c-myc epitopes, enables researchers to rapidly and efficiently characterize gene products in vivo.

Push column and chromatography apparatus

Abstract: An apparatus for chromatography of DNA, RNA, proteins and other molecules includes the use of a column adapted to hold a chromatography material and a sample to be filtered. A pneumatic pressure differential is applied across the column and the sample is urged through the chromatography material. A selected portion of the sample may then be collected.

Composition and methods utilizing stable reporter cell lines for detection of chop-dependent signal transduction

Abstract: The invention encompasses compositions and methods which utilize a cell line comprising a stably integrated recombinant nucleic acid construct comprising: a reporter gene operably linked to a recognition sequence for a sequence-specific DNA-binding protein; and a stably integrated recombinant nucleic acid construct comprising a sequence encoding a fusion protein, the fusion protein comprising a sequence-specific DNA binding domain, wherein the DNA binding domain specifically binds the recognition sequence, and a conditionally active transactivation domain of CHOP, wherein binding of the fusion protein to the recognition sequence results in transactivation of the reporter gene when the transactivation domain fused to the DNA binding domain is activated.