Protocols

Results

2. pUC19 double digestion for eGFP and Chlr, ligate with digested eGFP and Chlr separately. PCR to detect pUC19+eGFP and pUC19+ChlrPCR. All 12 samples are positive.

3. Double digest PE1 and mCherry with SalI and BamHI, double digest PC1 and Kan with KpnI and BamHI, ligate and PCR to detect. No positive results exist among PC1+K.

4. Double digest PEM2 and Kan with KpnI and BamHI as well as PC1. Ligate and using PCR to detect with universal primers. PEM2+K 1 and 5 are positive.

5. Double digest PEMK1 and Chlr with KpnI and EcoRI. Ligate and using PCR to detect with universal primers. PEMK1+Chlr 3-5 are positive.

Group 2(c)
1. 2010.7.31 PCR result for eGFP, Kan and Chlr. No specific target bands appeared in the photograph. Besides, dimerization of primers is severe.

2. 2010.8.16 RCR result for eGFP, mCherry, Kan and Chlr.

3. Result : plasmid digestion with EcoR I and Pst I.

4. Identification: After digestion, ligation and transformation, plasmid is extracted and digested with EcoR I. The size of positive clone is about 2.7Kb while the negative is less than 2Kb. As the photograph shows, there was no positive clone.

5. Identification: After digestion, ligation and transformation, plasmid is extracted and digested with EcoR I. The size of positive clone is about 2.7Kb while the negative is less than 2Kb. As the photograph shows, two clones, whose size is about 3Kb (plasmid+ Chlr), are positive.

6. As no positive clone for plasmid-eGFP-mCherry-Kan is picked, we have strong doubt about the efficiency of ligation of multiple fragments. Thus, PCR is conducted to confirm whether the ligation reaction took place in the system. Upstream primer of eGFP and downstream primer of Kan are used in PCR. Bands with the size of about 2.5Kb is hardly seen in the gel photograph.