Cloning – Invitrogen TOPO-TA kit


Ligation

            1. Add to the reaction mixture:

            4 µl Fresh PCR product

            1 µl Salt Solution

            1 µl TOPO vector

            2. Incubate at room temperature for 5 minutes

            3. Store on ice until needed, or overnight at 4°C for maximum number of transformants

 

Transformation

            1. Get cells out of freezer, thaw on ice for 5 minutes

            2. Add 2 µl of ligation mixture

            3. Incubate on ice for 5 minutes

            4. Heat-shock the cells for 30 seconds at 42°C

            5. Immediately put the cells on ice

            6. Add 250 µl of SOC recovery media

            7. Shake at 37°C for 1 hour

            8. Spread 50 µl on LB plates with X-gal and ampicillin

            9. Incubate plates overnight at 37°C and you should get colonies

            10. Proceed to colony PCR to verify your results

 

Materials necessary

            Cleaned PCR product

            TOPO-TA cloning system

            TOP-10 competent cells

            SOC media

            LB + amp + iptg + X-gal plates

            10 µl pipette tips

            1000 µl pipette tips

            1.5 ml microcentrifuge tube

            Ice

 

Equipment necessary

            37° C shaking incubator

            37° C incubator

            10 µl micropipette

            1000 µl micropipette

            42° C heat block


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