Description
The pNL1.3[ secNluc ], pNL3.3[ secNluc /minP], pNL2.3[ secNluc /Hygro] and pNL1.3.CMV[ secNluc /CMV] Vectors offer a secreted small luciferase reporter in various promoter-driven or promoterless configurations for expression in mammalian cells. One of the promoterless vectors carries hygromycin resistance gene for stable expression in cells.
An additional secreted NanoLuc® luciferase option, pNLF1-secN [CMV/Hygro] Vector, can be found on the pNLF1 NanoLuc® Protein Fusion Vectors product page .
NanoLuc® (Nluc) luciferase is a small enzyme (19.1kDa) engineered for optimal performance as a luminescent reporter. The enzyme is about 100-fold brighter than either firefly ( Photinus pyralis ) or Renilla reniformis luciferase using a novel substrate, furimazine, to produce high intensity, glow-type luminescence. The luminescent reaction is ATP-independent and designed to suppress background luminescence for maximal assay sensitivity.
Transcription regulation.
Virus-cell interactions.
Compound screening.
Post-translational modifications.
GPCR signaling.
Cell signaling.
Promoter analysis.
About NanoLuc® Luciferase and the pNL Vectors
For use as a genetic reporter, multiple forms of NanoLuc® luciferase have been configured to meet differing experimental objectives. Unfused Nluc offers maximal light output and sensitivity, and NanoLuc®-PEST (NlucP) closely couples protein expression to changes in transcriptional activity and increased signal-to background ratios. When a secreted reporter is preferred, there is NanoLuc® luciferase fused to an N-terminal secretion signal (secNluc). Luminescence is linearly proportional to the amount of NanoLuc® protein over a 1,000,000-fold concentration range, with a signal half-life ≥2 hours when detected with Nano-Glo® Luciferase Assay Reagent.
NanoLuc® luciferase possesses a number of physical properties that make it an excellent reporter protein:
very small, monomeric enzyme (171 amino acids; 513bp)
high thermal stability (T m = 60°C)
active over a broad pH range (pH 6–8)
no post-translational modifications or disulfide bonds
uniform distribution in cells
emission spectrum well suited for bioluminescence resonance energy transfer (BRET; λmax = 465nM).
NanoLuc® luciferase is made available in a variety of plasmids designed for use in reporter gene assays of transcriptional control and with each of the NanoLuc® forms (unfused Nluc, PEST destabilized NlucP, and secreted secNluc). The different pNL variations are designed for the following:
pNL1: cloning of a known or putative promoter region
pNL2: cloning of a known or putative promoter region and establishment of a stable cell line through Hygromycin selection
pNL3: cloning of a binding site or response element not in need of a basic promoter (such as are present in the pNL3.2.NF-κB-RE vector)
Control plasmids for the unfused, PEST-destabilized and secreted Nluc forms also are available.
The pNL vector series uses a pGL4-based backbone for easy sequence transfer from existing plasmids. This backbone design also reduces anomalous results by removing many transcription factor binding sites and other potential regulatory elements. The Nluc gene variations are codon optimized and have had many potential regulatory elements or other undesirable features removed (such as common restriction enzyme sites).
Reporter gene assays using secNluc.
pNL1.3[ secNluc ] Vector GenBank® Accession Number JQ437372 and vector sequence text file .
pNL2.3[ secNluc /Hygro] Vector GenBank® Accession Number JQ513380 and vector sequence text file .
pNL3.3[ secNluc /minP] Vector GenBank® Accession Number JQ513371 and vector sequence text file .
pNL1.3.CMV[ secNluc /CMV] Vector GenBank® Accession Number JQ513378 and vector sequence text file .
