The Salis Lab has recently discovered a new mechanism, called Ribosome Drafting, that controls a mRNA's translation rate. Learn more about it in our latest publication: Espah Borujeni and Salis. Translation Initiation is Controlled by RNA Folding Kinetics via a Ribosome Drafting Mechanism, Journal of the American Chemical Society, 2016

Are you engineering riboswitches? See our latest NAR Breakthrough Article Automated physics-based design of riboswitches from diverse RNA aptamers, Nucleic Acid Research, 2016. Are you engineering bacterial operons? In non-model hosts? Then our latest published work should also interest you: Kushwaha and Salis, A Portable Expression Resource for Engineering Cross-species Genetic Circuits and Pathways, Nature Communications, 2015. and Tian and Salis, A Predictive Biophysical Model of Translational Coupling to Coordinate and Control Protein Expression in Bacterial Operons, Nucleic Acid Research, 2015

RBS Library Calculator

Pre-Sequence [?]
Pre-Sequence: enter a nucleotide sequence (5 to 20 bp) that appears before the ribosome binding site, using A/G/C/T/U. The Pre-Sequence is important when the ribosome binding site is less than 35 nucleotides long. (optional)
Protein Coding Sequence [?]
Protein Coding Sequence: enter a nucleotide sequence (at least 50 bp) that encodes a protein, using A/G/C/T/U.
Begins with a start codon (ATG/GTG/TTG/CTG). (required)

Degenerate RBS Sequence [?]
Degenerate Ribosome Binding Site Sequence: enter a degenerate nucleotide sequence that defines a library of RBSs, using the 15 letter UIPAC degenerate nucleotide code: A/G/C/T/S/W/K/R/Y/M/D/B/H/V/N. S: G or C. W: A or T. K: G or T. R: A or G. Y: C or T. M: A or C. D: A, G, or T. B: C, G, or T. H: A, C, or T. V: A, C, or G. N: A, G, C, or T.

Organism or (16S rRNA) [?]
Organism or 16S rRNA sequence: choose a bacterial species by typing in the first 3 letters of its name and selecting it from the list. Alternatively, you may enter the last 9 nucleotides of the 16S rRNA, using A/G/C/T/U.
(start typing)

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For Non-Commercial Use Only. Click here for commercial usage.
When using these results, please reference: Iman Farasat, Manish Kushwaha, Jason Collens, Michael Easterbrook, Matthew Guido, and Howard M. Salis, "Efficient search, mapping, and optimization of multi-protein genetic systems in diverse bacteria", Molecular Systems Biology, v10(6), 2014
Method online since January 10th, 2011.
Have a Question? Our Documentation, Publications, and References may have your answer!
We gratefully acknowledge research funding from the Air Force Office of Scientific Research, the National Science Foundation, the Office of Naval Research, and an Amazon AWS Research Grant.
Computational resources are provided by the AWS Elastic Compute Cloud.