Mouse p27 PCR Using Gitschier Buffer
Mutant allele: Neo-1 primer (CCTTCTATCGCCTTCTTG), plus mgK-3 primer (TGGAACCCTGTGCCATCTCTAT) produce a 0.5kB PCR product.
Wildtype allele: mgK-3 (above) plus mcK-5 (GAGCAGACGCCCAAGAAGC) produce ~1kB product.
Stock Solutions:
1 M Tris pH 8.8 (do not use pH meter, store at room temp.)
1.23 g Tris HCl
5.13 g Tris base
q.s. 50 mL with H2O
KG-1 (10x) (Store frozen)
| Amt | [final] | |
| 8.3 mL | 1M (NH4)2SO4 | 166mM |
| 33.5 mL | 1 M Tris base pH 8.8 | 670 mM |
| 174 µL | ß-Mercaptoethanol | 50 mM |
| 3.35 mL | 1M MgCl2 | 67 mM |
q.s. to 50 mL with H2O and aliquot into 1.5 mL eppendorf tubes
KG-2 (10x) (Store frozen)
25 µL of 100mM dNTP Stocks (x4) [@10 mM]
25 µL DMSO 10%
25 µL 8 mg/mL BSA [0.8 mg/mL]
q.s. 100 µL H2O (makes 250 µL Total)
PCR Reaction Mix (To make a fresh master mix, multiply # PCR reactions x volumes, below)
2 µL KG-1 (10x) 1x
2 µL KG-2 (10x) 1x
2 µL Primer 1 (1uM) 0.1 mM
2 µL Primer 2 (1uM) 0.1 mM
0.2 µL Taq (Gibco) (5 U/uL) 0.05 U/mL
10 µL H2O
1.8 µL DNA
20 µL Total
Cycling Parameters: It is important to not place the tubes on the machine until the block has heated to > 90ºC. The first 4 cycles employ a higher melting temperature which helps to denature genomic DNA. Subsequent cycles use a lower melt which is sufficient for PCR product and preserves enzyme function. Longer (2 min.) extension times should be used if products > 2 kb are being amplified.
95°C hold x 2 min. (while inserting tubes)
(96°C x 30", 57°C x 30", 65°C x 1-2') x4
(93°C x 30", 57°C x 30", 65°C x 1-2') x36
4°C hold
