Tag Archives: pCR2.1

Cloning – C.gigas COX2/PGS2 5’/3′ RACE Products (from earlier today)

The bands that were excised and purified earlier today were cloned in to pCR2.1 using the TOPO TA Cloning Kit (Invitrogen) according to the manufacturer’s protocol with the following changes: used 4uL of all PCR products, incubated ligation reactions for 15mins @ RT, incubated competent cells with ligation reactions for 15mins on ice.

Two volumes of each reaction were plated (50uL and 100uL) on Kan50 plates with X-gal (made 20010412 by SJW) and incubated @ 37C O/N.


Ample number of white colonies for all 4 sets of cloning reactions.

Ligations – COX1/COX2 PCR Products

Performed ligations/cloning on a variety of COX1 genomic and COX 5′ RACE products using the TOPO TA Cloning Kit (Invitrogen). Used 2uL of gel-purified PCR product in each cloning rxn, 2.5uL of H2O, 1uL of salt solution, and 0.5uL of the Invitrogen pCR2.1 vector. Incubated samples for 5mins at RT. Used 2uL of the cloning reaction to transform TOP10 chemically competent cells (Invitrogen), mixed very gently, incubated on ice for 5mins, heat shocked at 42C for 30s and immediately placed on ice. Added 250uL of SOC Medium and incubated tubes at 37C, 200RPM for 1hr. Plated 50uL of each transformation on LB+Kan plates (made by Steven on unknown date with unknown Kan concentration) containing 40uL of 40mg/mL X-gal. Incubated O/N at 37C. Remaining volume of transformed bacteria were stored @ 4C.