| Pol I | RNA polymerase I |
| Pol II | RNA polymerase II |
| Pol III | RNA polymerase III |
| rDNA | ribosomal DNA |
| rRNA | ribosomal RNA |
| mRNA | messenger RNA |
| EC | elongation complex |
| DNAt | DNA template |
| DNAnt | DNA non-template |
| MENOTR | Multi-start Evolutionary Nonlinear OpTimizeR |
| tRNA | transfer RNA |