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R6018 Sigma

Ribonucleic acid, transfer, lysine specific from Escherichia coli

lyophilized powder

Synonym: E. coli Lys tRNA, tRNA



grade   for molecular biology
form   lyophilized powder
storage temp.   −20°C


Frequently Asked Questions

Frequently Asked Questions are available for this Product.

General description

Transfer RNA is isolated from E. coli. This transfer RNA is specific for transfer of the amino acid lysine. The sequence and structure has been published previously.


Suitable for use:
• As a tRNA standard
• As a substrate in tRNA synthatase assays
• As a substrate in other reactions involving tRNAs

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
Could you tell me more about how tRNA is quantified for sale? What exactly does 1UN mean?
Product R6018 - Ribonucleic acid, transfer, lysine specific from Escherichia coli is sold as A260 units. One unit will yield an A260 of 1.0 in 1.0 ml of water (1 cm light path). A solution with OD of 1 is approximately 40 ug RNA/ml.
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Protocols & Articles
Peer-Reviewed Papers


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