Difference between revisions of "Part:BBa K2066009"

Latest revision as of 02:50, 29 October 2016

Tet Monomer B w/ 64 bp spacer for ICA

Part of a suite of Iterative Capped Assembly (ICA) parts that can be used to assemble a TetO or LacO binding array of any size in order to horizontally shift the slope of a transfer function through molecular titration of transcription factors. These parts were designed based upon the ICA method of assembling repeat sequences from Briggs, et al. 2012 (“Iterative capped assembly: rapid and scalable synthesis of repeat-module DNA such as TAL effectors from individual monomers”). These assembled binding arrays can be used to horizontally shift the slope of a transfer function through molecular titration of transcription factors (LacI or TetR).

Additionally, there are 3 different verions of tetO ICA parts in this library, with either 8,16 or 64 base pair spacers between the tetO monomers, this is because it has been suggested by Amit et al. 2012 (“Building Enhancers from the Ground Up: A Synthetic Biology Approach” that anticooperativity plays a role in the effectivity of DNA protein binding. Anticoopritivity means that if two repressor binding sites are very close to each other, a repressor binding to one can spatially hinder, or even completely prevent a repressor from binding to the other. We thought that enabling another level of tuning to allow for even finer levels of shift magnitude by altering the level of anticooperativity would be a useful tool to include within the binding array section of the toolbox. ICA method and sequence design based on Briggs et al., 2012 and its supplement.

Protocol for Iterative Capped Assembly available at: https://static.igem.org/mediawiki/parts/d/df/T--William_and_Mary--ICA.pdf

The parts in this ICA library are K2066002 - K2066013.

Briggs, A. W., Rios, X., Chari, R., Yang, L., Zhang, F., Mali, P., & Church, G. M. (2012). Iterative capped assembly: rapid and scalable synthesis of repeat-module DNA such as TAL effectors from individual monomers. Nucleic acids research, gks624.

The UNS2, UNS3, UNS 4, and UNS 5 sequences are taken from Torella et al. 2013 and are ideal for cloning long sequences of monomers.

Torella, J. P., Boehm, C. R., Lienert, F., Chen, J. H., Way, J. C., & Silver, P. A. (2013). Rapid construction of insulated genetic circuits via synthetic sequence-guided isothermal assembly. Nucleic acids research, gkt860.

Sequence and Features