8×85ml Angle Rotor

Cerillo’s Stratus Plate Reader is a third party module that can be placed next to or inside the OT-2 or Opentrons Flex for post experimental analysis. The worktable adapter will allow you to utuilize the OT-2 or Opentrons Flex to prepare the samples directly into the plate reader positions on the worktable.

This small portable device is primarily for microbial growth curve analysis. The Stratus is compatible with Cerillo’s Canopy wireless device that allows real time visualization, control, and analytics. This product is compatible with reading 600nm wavelengths.

Cerillo’s Stratus Plate Reader is a third party module that can be placed next to or inside the OT-2 or Opentrons Flex for post experimental analysis. The worktable adapter will allow you to utuilize the OT-2 or Opentrons Flex to prepare the samples directly into the plate reader positions on the worktable.

This small portable device is primarily for microbial growth curve analysis. The Stratus is compatible with Cerillo’s Canopy wireless device that allows real time visualization, control, and analytics. This product is compatible with reading 600nm wavelengths.

Endonucleases DNA-specific, dsDNase

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Double-Strand Specific dsDNase (dsDNase) is ideal for fast and effective removal of contaminating DNA from PCR master mixes.

Taq polymerases are commonly contaminated by bacterial DNA. This is a problem in PCR based bacterial typing and detection as it might cause false positive results. The unique properties of dsDNase make it suited for removal of contaminating DNA from PCR master mixes prior to addition of DNA template.

In figure 1, a PCR master mix was treated with different amounts of dsDNase before performing a qPCR to measure the contaminating bacterial DNA in the master mix. ArcticZymes dsDNase effectively removed contaminating DNA below known levels of the assay detection limits.

The dsDNase from Arctic shrimp (Pandalus borealis) is recombinantly produced in Pichia pastoris. It cleaves phosphodiester linkages in DNA to yield oligonucleotides with 5’-phosphate and 3’-hydroxyl termini.

The specific activity is estimated to be 30 times higher than that of bovine DNase I. In the presence of magnesium as only divalent cation and using oligos as a substrate, the activity towards dsDNA is 5000-fold higher than towards ssDNA.

The unique double strand-specificity allows specific degradation of dsDNA while leaving shorter ssDNA as primers and probes essentially intact. Easy inactivation by moderate heat (65°C) allows addition of DNA intended for analysis directly after removal of contaminating DNA.

Workflow – Decontamination of PCR master mixes

Recommended applications:

• Decontamination of PCR master mixes
• Removal of genomic DNA from RNA preparations

Key advantages with dsDNase:

• Double-strand DNA specific endonuclease
• High specific activity
• Can be heat-inactivated by moderate heat treatment (65°C for 15 minutes)
• Producing 5′-phospho-oligonucleotide products

Figures

Figure 1. The dsDNase effectively removes contaminated DNA

The dsDNase effectively removes contaminated DNA:

A PCR master mix was preincubated with various concentrations of dsDNase. After treatment, no DNA was amplified in non-template controls.

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Properties

Specificity towards double-stranded DNA

Nucleic acid specificity has been tested towards double- and single-stranded DNA and RNA oligonucleotides. The specificity of dsDNase towards the substrate has been measured using 15-mer oligonucleotides with FAM at 5′ and DarkQuencher® 3′ (Eurogentec). The fluorescence is proportional to enzyme activity. Assay conditions: 25 mM Tris pH 7.5, 5 mM MgCl₂, and 2 μM oligonucleotide.

Relative activities

Substrate                  Relative Activity
dsDNA                           100%
ssDNA                          <0.03%
dsRNA                          <0.01%
ssRNA                           <0.01%

Double-Strand Specific dsDNase (dsDNase) is ideal for fast and effective removal of contaminating DNA from PCR master mixes.

Taq polymerases are commonly contaminated by bacterial DNA. This is a problem in PCR based bacterial typing and detection as it might cause false positive results. The unique properties of dsDNase make it suited for removal of contaminating DNA from PCR master mixes prior to addition of DNA template.

Custom low volume, low profile/slim 384-well plates

About

Specially designed custom low volume, low profile/slim 384-well plates designed for use with our GeneArrayer. These plates are made from durable polypropylene delivering an excellent low fluorescence background interference and high performance when paired with our high-throughput genotyping instruments.

The unique, slimline plate design permits lower reaction volumes than standard 384-well plates (typically 1.6 – 2.0 µL) allowing for reaction miniaturization, with all the benefits this brings saving time, consumables and costs. This plate is designed specifically to be used with 3CR Bio’s GeneArrayer automated liquid handling instrument.

Plate Dimensions: Length 127.85 mm, Width 85.85 mm, Thickness 5.05 mm, Well Spacing 4.50 mm, Individual Well Capacity 3 µL.

Custom low volume, low profile/slim 384-well plates