XS-probes - MGB probe alternative
In addition to our twice dyed probes, Biolegio is offering the XS-probe. XS-probes mimic the features of the Minor Groove Binder (MGB probe) moiety: it gives greater stability to the hybridized probe. This raises its melting temperature. As a result, XS-probes can be effective at lengths shorter than traditional dual-labeled probes.
All Twice Dyed Probes include synthesis of maximum 40 nt, 5' modification, 3' quencher and HPLC purification.
- Cost-effective replacement for MGB probes
- Design shorter probes and increase your specificity
- Premixed assay delivery possible with the oligo dispensing service
You can fit your XS-probe with numerous fluorophores and quenchers from an extensive list of modifications.
Please follow the link below for a compatibility figure. For multiplexing applications use fluorophores with the least amount of spectral overlap.
Select the modifications of your choice in our webshop or in our excel ordering sheet. In the webshop you can have instant pricing insight. Select 'XSprobe(MGB rep)' in the orderform as the chemistry used for ordering XS-probes.
Use the standard code letters for mixed bases / wobbles.
Biolegio three different synthesis scales for Real-Time PCR probes oligos: 40 nmol, 200 nmol and 1000 nmol. Prices include synthesis of maximum 40 nucleotides.
40 nmol scale: approx. 5 nmol min. yield
200 nmol scale: approx. 20 nmol min. yield
1000 nmol scale: approx. 60 nmol min. yield
Biolegio has two synthesis protocols: 'High Purity' and 'B-pure'. The used protocol depends on the length of the oligo. This means that the protocols have been optimized for certain oligo lengths.
- High purity protocol is used for oligos till and 79 bases.
- All DNA oligos longer than 80 bases are synthesized on our B-pure synthesis protocol.
Each protocol delivers the highest possible coupling efficiency for the specified range.
Your XS-probe can be shipped dry or dissolved or mixed. Standard probes are delivered dissolved in a tube in a concentration of 100 pmol/μl.
- H20 buffer
- LoTE buffer
- TE buffer
Probes can be delivered in any format, concentration or combination. Have a look at our oligo dispensing service for more information about this topic.
All your DNA oligos are delivered with a specification sheet including GC-content, molecular weight, melting temperature (Tm), OD value, sequence and quantity in μgram and nmol.
A stringent quality control system ensures that you can expect the quality of our oligonucleotides to be of the highest standard. Before the synthesis, all chemicals are checked to meet our quality standards. During the fully automated oligo synthesis, all steps of the synthesis are monitored by multiple control functions on our DNA synthesizers. This way we can assure the coupling efficiency of the synthesis to meet our demands.
Synthesis is followed by further quality controls to guarantee the quality of the oligos. All oligos are routinely analyzed by optical density (OD) measurement. In addition, oligos are randomly analyzed by gel electrophoresis and Liquid Chromatography Mass Spectrometry (LCMS). If an oligo does not meet our requirement it’s resynthesized. The result of our stringent QC process is a product of the highest standard. All oligos are delivered with our product specification sheet, which includes: % GC content, yield in nmol and μgram, OD, melting temperature and molecular weight (MW).
ISO quality management
ISO is an independent, non-governmental membership organisation and the worlds largest developer of voluntary international standards. Biolegio’s manufacturing facility is ISO 9001:2008 and ISO 13485:2003 certified. Achieving these certificates ensures good, reliable and safe products as a result of strong product quality and manufacturing procedures and an ongoing development of our quality management system. This ongoing development empowers us to continuously strengthen our ability to identify and exceed the needs and expectations of our customers.