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Notes
This assay does not work well without the use of a Hotstart Taq polymerase.
(a) We want to keep this as a generic statement, so that it covers the multiple
Hotstart Taqs we currently use, and if we change vendors in the future.
This assay will not distinquish hemizygous from homozygous transgenic animals.
The genotyping protocol(s) presented here have been optimized for reagents and conditions used by The Jackson Laboratory (JAX).
To genotype animals, JAX recommends researchers validate the assay independently upon receipt of animals into their facility.
Reaction cycling temperature and times may require additional optimization based on the specific genotyping reagents used.
Expected Results
Transgene = 370 bp
Internal Positive Control = 200 bp
Internal Positive Control = 200 bp
JAX Protocol
Protocol Primers
| Primer | 5' Label | Sequence 5' → 3' | 3' Label | Primer Type | Reaction | Note |
|---|---|---|---|---|---|---|
| 10012 | CCC AGG TTA CCA TGG AGA GA | Transgene Forward | A | |||
| oIMR8744 | CAA ATG TTG CTT GTC TGG TG | Wild type Forward | A | |||
| oIMR8745 | GTC AGT CGA GTG CAC AGT TT | Wild type Reverse | A | |||
| oIMR9402 | GAA CTT CAG GGT CAG CTT GC | Mutant Reverse | A |
Reaction A
| Component | Final Concentration |
|---|---|
| ddH2O | |
| Kapa 2G HS buffer | 1.30 X |
| MgCl2 | 2.60 mM |
| dNTP KAPA | 0.26 mM |
| 10012 | 0.50 uM |
| oIMR8744 | 0.50 uM |
| oIMR8745 | 0.50 uM |
| oIMR9402 | 0.50 uM |
| Glycerol | 6.50 % |
| Dye | 1.00 X |
| Kapa 2G HS taq polym | 0.03 U/ul |
| DNA |
Cycling
| Step | Temp °C | Time | Note |
|---|---|---|---|
| 1 | 94.0 | -- | |
| 2 | 94.0 | -- | |
| 3 | 65.0 | -- | -0.5 C per cycle decrease |
| 4 | 68.0 | -- | |
| 5 | -- | repeat steps 2-4 for 10 cycles (Touchdown) | |
| 6 | 94.0 | -- | |
| 7 | 60.0 | -- | |
| 8 | 72.0 | -- | |
| 9 | -- | repeat steps 6-8 for 28 cycles | |
| 10 | 72.0 | -- | |
| 11 | 10.0 | -- | hold |
JAX uses a very high speed Taq (~1000 bp/sec), use cycling times recommended for your reagents.
JAX uses a 'touchdown' cycling protocol and therefore has not calculated the optimal annealing temperature for each set of primers.