News

After this change, our quality standards will still be met as before. But if you experience any problems in your protein synthesis, please contact us.



1. Details of change

1) For tRNAs included in Solution I of PUREfrex® 1.0, PUREfrex® 2.0 and PUREfrex® 2.1, its source and preparation method were changed.



Product name Reagent Name Reagent No.*
< OLD >
Reagent No.*
< NEW >
PUREfrex® 1.0 Solution I PF001-1 PF001-11
PUREfrex® 2.0 Solution I PF201-11 PF201-12
PUREfrex® 2.1 Solution I PF213-1 PF213-11

* The reagent number can be found on the label of the tube.



2) Release factors (RF1, RF2) included in Solution II of PUREfrex® 1.0 will be change to methylated proteins with improved specific activity. PUREfrex® 2.0 and PUREfrex® 2.1 have already been changed to methylated RF1 and RF2 from December 2020.

3) For Ribosomes included in Solution III of PUREfrex® 1.0, will be change to same preparation method as PUREfrex® 2.0 and PUREfrex® 2.1.



Product name Reagent Name Reagent No.*
< OLD >
Reagent No.*
< NEW >
PUREfrex® 1.0 Solution II PF001-2 PF001-21
PUREfrex® 1.0 Solution III PF001-3 PF-3A1

* The reagent number can be found on the label of the tube.



2. Applicable date

1) Change tRNA from December 2022

2) and 3) Change RF1, RF2 and ribosome from October 2023



3. Contact information

We have an inquiry form available.

https://purefrex.genefrontier.com/contact/