The phCMV series of vectors are designed to achieve significantly higher expression levels than traditional human cytomegalovirus (CMV) promoter-based constitutive expression vectors. This makes the phCMV vectors ideal tools for routine protein expression studies as well as animal injection experiments.
The phCMV vectors consistently deliver superior expression levels when compared with other commercially available CMV promoter-based expression vectors. It is not unusual to obtain protein expression levels from phCMV that are severalfold higher than those obtained from other popularly used vectors. In addition, because phCMV vectors use the Kan/Neo gene for selection in both bacteria and cultured cell lines, they offer smaller vector sizes and improved transfection efficiency.
In summary, the three phCMV vectors offer the following benefits:
- Maximized high-level expression with optimized CMV promoter
- G418 resistance gene for the selection of stable cell lines
- Optional N- or C-terminal HA fusion tags for simplified protein detection and purification with
anti-HA antibodies and affinity resins - Extensive multiple cloning region for convenient and easy cloning
- Small vector sizes for efficient transfection
| FEATURE | FUNCTION |
| Modified human CMV immediate-early promotor/enhancer/intron | High-level expression promoter in vitro & in vivo |
| T7 promoter priming site in phCMV, phCMV3 | For sequencing of the inserted DNA fragment |
| SV40 polyadenylation signal | Efficient transcription termination and polyadenylation of mRNA |
| SV40 promoter | High-level expression of the neomycin resistance gene for selection of stably transfected cells |
| Kanamycin resistance gene | Efficient selection of vector in E. coli cells |
| pUC origin | High copy number replication of vector in E. coli cells |
| Multiple cloning site and HA tags | For cloning a gene into vector wild type, N-terminal HA, or C-terminal HA tag |
Available Kits and Contents
| KIT | CONTENTS |
| phCMV1 for encoding rproteins in their native from without any tags | 25μg supercoiled phCMV1 vector; 10μg phCMV1/CAT positive control vector |
| phCMV2 for encoding rproteins in their native from with N-terminal HA tag | 25μg supercoiled phCMV2 vector; 10μg phCMV2/CAT positive control vector |
| phCMV3 for encoding rproteins in their native from with C-terminal HA tag | 25μg supercoiled phCMV3 vector; 10μg phCMV3/CAT positive control vector |