User:Jorge E. Buendia Buendia/Notebook/iGEM UNAM-Genomics-Mexico/2010/05/21

iGEM UNAM-Genomics-Mexico

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May 21st, 2010 1. Re-run gel to verify DNA extraction from E. coli K12 made on may 19th by Augusto & Paz, gel was run 50 min at 90V. Lanes: 1,4) Ladder; 2) Augusto’s DNA extraction; 3) Paz’s DNA extraction. This gel confirms that DNA extraction failed. 2. I incubated E. coli K12 on 5ml of LB medium for 12 hrs. at 300 rpm, to extract DNA using Miguel’s protocol. I also went to ask Miguel about his protocol but, fortunately, he gave me DNA from E. coli K12, so I don’t have to do DNA extraction again. With the DNA Miguel gave me, I ran a gel to verify the prescence of genomic DNA. In the same gel I loaded Paz’s DNA extraction but now with 5ul of loading buffer. The results are presented in the next figure: Lanes: 1) Ladder; 2) Miguel’s DNA; 3) Paz’s DNA extraction with 5ul of load buffer; 4) Ladder. *It seems there’s not DNA at all, but I will run PCR to check if I can amplify Blue Promoter. 3. PCR for Blue Promoter The reaction for blue promoter was repeated 2 times with each of the DNA’s (Paz & Augusto’s extraction and Miguel’s gift), OGR primers were used as control. Reactions are as follows: BP-Miguel x2 (B-M1, B-M2) BP-Paz x2 (B-P1, B-P2) BP-Augusto x2 (B-A1, B-A2) BP-Ctrl - x1 (B-C-) OGR-Miguel x1 (O-M) OGR-Paz x1 (O-P) OGR-Augusto x1 (O-A) OGR-Ctrl - x1 (O-C-) Total number of reactions: 11