A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's chromosomal DNA. Plasmids naturally exist in bacterial cells and also occur in some eukaryotes. The genes carried in plasmids often provide bacteria with genetic advantages, such as antibiotic resistance, making them indispensable tools in molecular biology and recombinant DNA research workflows.
As a trusted global life science partner based in Hong Kong, Nova Lifetech maintains one of the largest commercial plasmid libraries available, with over 81,000 plasmid vectors ready for immediate international dispatch. Our extensive catalog includes a wide range of expression vectors, cloning vectors, and specialty constructs tailored for diverse academic and biopharma research applications.
Popular Plasmid Vector Series & Specifications
| Vector Series |
Representative Clones |
Application & Promoters |
| pET Series |
pET28a, pET21a, pET32a |
Bacterial protein expression with His-tag or T7 promoter |
| pCMV Series |
pCMV-SPORT6, pCMV3 |
Mammalian expression driven by constitutive CMV promoter |
| pLenti Series |
Lentiviral vectors |
Lentiviral delivery mechanisms for stable host gene integration |
| pGL Series |
pGL4.75 |
Luciferase reporter gene assays for promoter activity analysis |
| Specialty Clones |
pOTB7, pEnCMV |
Standard cloning, sub-cloning, and robust overexpression constructs |
Reconstitution & Handling Protocols
Form of Supply:
All plasmids are supplied in lyophilized (powder) form within secure microcentrifuge tubes to ensure maximum stability during global cold-chain transits.
Step-by-Step Reconstitution Instructions:
- Centrifuge the tube at 5,000 rpm for 1 minute before opening to collect the lyophilized pellet at the bottom.
- Carefully add 20 μl of sterile ddH₂O (or TE buffer) to achieve the target stock concentration.
- Vortex gently or pipet up and down to completely dissolve, then aliquot and store at -20°C.
Global Procurement & Search Index
Whether your project demands a specific named plasmid vector, a highly customized expression construct, or a rare clone variant, our searchable digital catalog guarantees a seamless procurement workflow. Utilize our integrated A–Z filter interface above to filter directly by plasmid nomenclature.
Regulatory Notice: All plasmid vectors items listed herein are strictly FOR RESEARCH USE ONLY. Not for use in diagnostic or human therapeutic procedures.
