MISSION® 3X LacO Inducible Non-Target shRNA Control Plasmid DNA

Does not target any known genes

MISSION Control Vectors
MDL number:
Pricing and availability is not currently available.

Quality Level

product line



500 ng/μL in TE buffer; DNA (10μg of plasmid DNA)

shipped in

dry ice

storage temp.


General description

Sigma® is proud to offer IPTG-inducible vectors as the latest development from our continued partnership in TRC.

The pLKO vector has been redesigned to contain a LacI (repressor) and a modified human U6 shRNA promoter with LacO (operator) sequences. In the absence of IPTG (isopropyl-Β-D-thio-galactoside), an analogue of lactose, LacI binds to LacO preventing expression of the shRNA. When IPTG is present, the allosteric LacI repressor changes conformation, releasing itself from lacO modified human U6 promoter, and subsequently allows expression of the shRNA.

We are proud to offer two different IPTG inducible vectors for your research. The preferred inducible vector, pLKO_IPTG_3xLacO, contains three lac operon sequences (two in the U6 promoter and one 3′ of the promoter) affording both tight regulation and great gene silencing. Whereas, the pLKO_IPTG_1xLacO vector contains a single lac operon sequence in the U6 promoter, which allows for an advantage to shRNA expression, but looser control of the promoter when not induced.

The MISSION® 3X LacO Inducible Non-Target shRNA Control is a lentivirus plasmid vector. The vector contains an shRNA insert that does not target any known genes, making it useful as a negative control in experiments using the MISSION inducible shRNA library clones. This allows one to examine the effect of transfection of a short-hairpin on gene expression and interpret the knockdown effect seen with shRNA clones. Ampicillin and puromycin antibiotic resistance genes provide selection in bacterial or mammalian cells respectively. In addition, self-inactivating replication incompetent viral particles can be produced in packaging cells (HEK293T) by co-transfection with compatible packaging plasmids. The 1X LacO Inducible Non-Target shRNA Control is provided as 10 μg of plasmid DNA in Tris-EDTA (TE) buffer at a concentration of 500 ng/μl.


To see more application data, protocols, vector maps visit

Legal Information

Use of this product is subject to one or more license agreements. For details, please see
MISSION is a registered trademark of Sigma-Aldrich Co. LLC
Sigma is a registered trademark of Sigma-Aldrich Co. LLC


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Daniel J Puleston et al.
Cell metabolism, 30(2), 352-363 (2019-05-28)
How cells adapt metabolism to meet demands is an active area of interest across biology. Among a broad range of functions, the polyamine spermidine is needed to hypusinate the translation factor eukaryotic initiation factor 5A (eIF5A). We show here that...
Hanlin Zhang et al.
Molecular cell, 76(1), 110-125 (2019-09-03)
Failure to make adaptive immune responses is a hallmark of aging. Reduced B cell function leads to poor vaccination efficacy and a high prevalence of infections in the elderly. Here we show that reduced autophagy is a central molecular mechanism...
Swapna Aravind Gudipaty et al.
Molecular and cellular biology, 35(22), 3810-3828 (2015-09-02)
Transcription elongation programs are vital for the precise regulation of several biological processes. One key regulator of such programs is the P-TEFb kinase, which phosphorylates RNA polymerase II (Pol II) once released from the inhibitory 7SK small nuclear ribonucleoprotein (snRNP)...
Related Content
Constitutively expressed shRNAs are useful for most RNAi needs, but further characterization often requires the ability to tune gene expression. Regulating expression is especially important when studying essential and lethal genes. Sigma® is proud to offer IPTG-inducible vectors as the latest development from our continued partnership in TRC. Trust in MISSION® Custom Services to create the perfect clone to fit your research
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