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preQ1-biotin | Buffers, Chelators and Reagents
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Description: PreQ1 with biotin handle for RNA labeling and purification

Chemical Name: N-(6-(((2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)methyl)amino)hexyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide

Purity: ≥95%

Product Details

Biological Activity

preQ1-biotin is a modified analog of the natural substrate prequeosine1 (preQ1) and is used for RNA-TAG (transglycosylation at guanosine) and DNA-TAG. preQ1-biotin enables affinity tagging and pull-down of specific RNAs that have been modified selectively by E. coli tRNA guanine transglycosylase (TGT). preQ1-biotin is incorporated site-specifically and covalently into RNAs containing a short harpin nucleotide recognition motif. The guanine in a UGU recognition element is exchanged with the preQ1-biotin substrate.

Plasmids for expression of the E.coli TGT enzyme (#138201) and for cloning an RNA of interest into a vector containing the recognition motif at the 3' end (#138209) are available from Addgene.

Scientific Data

Structure Schematic representation of preQ1-bitoin insertion into DNA. View Larger

E. coli TGT irreversibly exchanges a specific guanine in a DNA hairpin with preQ1-biotin. Schematic representation of preQ1-bitoin insertion into DNA.

E. coli TGT irreversibly exchanges a specific guanine in a DNA hairpin with preQ1-biotin. Urea-PAGE gel shift analysis of preQ1-biotin insertion. Modification is evidenced by an upward shift of the product band due to molecular weight increase. Lane 1 is unmodified DNA; lane 2 is preQ1-biotin modified DNA.

Technical Data

Soluble to 20 mM in DMSO and to 5 mM in ethanol
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.

Additional Information

Licensing Caveats:
Sold under license from The Regents of the University of California.

Product Datasheets

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