Difference between revisions of "Part:BBa K567014:Experience"

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how you used this part and how it worked out.
 
how you used this part and how it worked out.
  
===Construction of BBa_K567014===
 
 
In order to charge Met to tRNA<sup>Met</sup> with mutated anticodon, we need to deprive MetRS of its anticodon specificity. Directed Evolution Strategy is used. Error-prone PCR is used to introduce random mutations into MetRS.When this part, ''metY''-CGA (BBa_K567016) and KanaR (BBa_K567020) are co-transformed into the cell, the cell is expected to survive Kana. We screened the MetRS obtained through error-prone PCR using Kana and obtained one target mutant.
 
 
 
===Characterization of BBa_K567015===
 
 
When this part, ''metY''-CGA (BBa_K567016) and KanaR (BBa_K567020) are co-transformed into the cell, the cell is expected to survive Kana. This enzyme lost specificity for tRNA<sup>Met</sup> anticodon while maintained aminoacylation ability.
 
 
[[image:11SJTU-initial_codon_result.jpg|frame|center|fig. Growth of ER2566 with a. ''metG''N + ''metY''-CGA, b. ''metG''M + ''metY''-CGA, c. + ''metG''N, d. + ''metG''M. Growth medium (left): LB Kana+Tet. Growth medium (right): LB Kana.]]
 
 
Cell growth shows that the cells show Kana resistance only when both modified MetRS (''metG''M) and modified tRNA<sup>Met</sup>(''metY''-CGA) are transformed into the cell, proving that ''metG''M works well.
 
  
 
===User Reviews===
 
===User Reviews===

Latest revision as of 10:37, 5 October 2011

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