Difference between revisions of "Part:BBa K3790003"

Figure 1. Oligo assembly by PCR. It is generally used to construct completely new or special-purpose DNA. This method may have the disadvantage of a high mutation rate when operated. Once, we had to sequence nine clones of the same construct to get a single correct one. The reason for this is most likely due to complex annealing and amplification. We suggest to have 10-15 rounds amplification without F1 or R1 primer, then add those two primers to have another 25 rounds. Must use high-fidelity enzymes for this method. Due to the pricing, we always use 60bp primers, 58 overlapping annealing temperature, to assemble 300-500bp DNA fragment.

Figure 2. Assembled DNA binding proteins, albA1, S.ssb, E.ssb. The first lane was loaded with DNA ladder, sizes were marked on the image. The brightest band of 750 bp was about 100 ng, and other bands about 50 ng. Lanes with correct sized amplified DNA were labeled. After PCR cloning, several bacterial clones were picked, grew into cultures and sent for Sanger sequencing. Then, we verified the sequencing results, and used the correct ones for further experiments.