Tuesday 26^th July

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High fidelity PCR on bacteria transformed with pPS16_001, pPS16_003, pPS16_005 and pPS16_009

By Alice

PCR peformed on July 25 with bacteria containing plasmids pPS16_001, pPS16_005 and pPS16_009 did not give us expected results. We performed again this PCR, adding bacteria transformed with pPS16_003, that containing gBlocks 1.1, 3.1 and GFP 1-9 respectively, were sent to sequencing. Sequencing revealed that clones 2 transformed with pPS16_001, clone 1 transformed with pPS16_005, and clone 1 transformed with pPS16_009 had the good insert in their plasmid. In ordered to assembled gBlocks, a PCR with Q5® High-Fidelity 2X Master Mix was performed on these clones following this protocol. Specific primers were used for each plasmids (table below). Annealing temperature calculated was 72°C, and initial step was prolonged to 7 min. After amplification, 1 µL of loading dye was added to 5µL of each PCR products. Then 5 µL of this mix were put into a well of the gel. A last well contained 10µL of DNA ladder. PCR products were migrated 25min at 100V.

PCR products expected were :

No PCR products were expected. We supposed that initial denaturation was too long, and caused enzyme damages.

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