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Inverted rU (reverse linkage)

Inverted rU (reverse linkage)

Code : [Inv-rU]

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picture of Inverted rU (reverse linkage)

Modification : Inverted rU (reverse linkage)

Catalog Reference Number
Modification Code
5 Prime
3 Prime
Molecular Weight (mw)
Extinction Coeficient (ec)
Technical Info (pdf)
Absorbance MAX
Emission MAX
Absorbance EC

Minor Bases

Catalog NoScalePrice
27-6444-0550 nmol$202.00
27-6444-02200 nmol$202.00
27-6444-011 umol$448.00
27-6444-032 umol$741.00
27-6444-065 umol$2,016.00
27-6444-1010 umol$3,586.00
27-6444-1515 umol$4,482.00
Discounts are available for Inverted rU (reverse linkage)!
Modification* Discount Price Structure
1 site/order List price
2 sites/order 10% discount
3 sites/order 20% discount
4 sites/order 30% discount
5-9 sites/order 50% discount
10+ sites/order 60% discount
*Exceptions apply

Reverse synthesis can be achieved by incorporation modifications where the synthesis orientation can be changed as desired. Oligo can be designed for the production of 5'-5' or 3'-3' linkages or a combination of these in the same oligo. These modified phosphodiester linkage modified oligos are useful in antisense studies, or to synthesize oligonucleotide segments in the opposite sense from normal synthesis, for structural studies.

Having a single inverted base at the 3' position with a 3'-3' linkage imparts the oligo exonuclease resistance and prevents extension by polymerases as there is no free 3' hydroxyl group to initiate synthesis.

Construct Examples


The construct shown above is with a single [Inv-dT] to signify the orientation change point after the standard bases in green font; chemical synthesis starts from the 3' end. Note ALL bases shown in orange font after the first inverted bases towards the left will also be inverted bases to keep the reverse orientation.

The same construct is shown below but with standard orientation bases shown in green font inserted after the inverted base, this will reverse the polarity and thus the oligo will have a 5' and a 3' end.


- Inverted rU (reverse linkage)

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