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Notes
This assay will NOT distinguish hemizygous from homozygous transgenic animals.
This assay does not work well without the use of a Hotstart (We are using Taq Start Antibody mixed 1:1 with Taq polymerase).
This assay does not work well without the use of a Hotstart (We are using Taq Start Antibody mixed 1:1 with Taq polymerase).
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 = 430 bp
Internal positive control = 200 bp
Internal positive control = 200 bp
Separated by gel electrophoresis on a 1.5% agarose gel.
JAX Protocol
Protocol Primers
| Primer | 5' Label | Sequence 5' → 3' | 3' Label | Primer Type | Reaction | Note |
|---|---|---|---|---|---|---|
| oIMR8744 | CAA ATG TTG CTT GTC TGG TG | Internal Positive Control Forward | A | |||
| oIMR8745 | GTC AGT CGA GTG CAC AGT TT | Internal Positive Control Reverse | A | |||
| oIMR9327 | ACC CAG AAT GCC GAT TTC ATC | Forward | A | |||
| oIMR9328 | AGG TTC AGG TGG ATG TAA TTC CTG | Reverse | A |
Reaction A
| Component | Final Concentration |
|---|---|
| ddH2O | |
| Kapa 2G HS buffer | 1.30 X |
| MgCl2 | 2.60 mM |
| dNTP KAPA | 0.26 mM |
| oIMR8744 | 0.50 uM |
| oIMR8745 | 0.50 uM |
| oIMR9327 | 0.50 uM |
| oIMR9328 | 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.
Strains Using This Protocol
This is the only strain that uses this protocol.