| O17966 | TOP1_CAEEL | Caenorhabditis elegans | top-1 M01E5.5 | Detail |
| Q969P6 | TOP1M_HUMAN | Homo sapiens (Human) | TOP1MT | Detail |
| Q9PHK2 | TOP1P_XYLFA | Xylella fastidiosa (strain 9a5c) | XF_a0003 | Detail |
| O27661 | TOP1_METTH | Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H) (Methanobacterium thermoautotrophicum) | topA MTH_1624 | Detail |
| Q04750 | TOP1_MOUSE | Mus musculus (Mouse) | Top1 Top-1 | Detail |
| P47368 | TOP1_MYCGE | Mycoplasma genitalium (strain ATCC 33530 / G-37 / NCTC 10195) | topA MG122 | Detail |
| P07799 | TOP1_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | top1 SPBC1703.14c | Detail |
| Q5HGI2 | TOP1_STAAC | Staphylococcus aureus (strain COL) | topA SACOL1267 | Detail |
| P40114 | TOP1_BACAN | Bacillus anthracis | topX top1 pXO1-142 BXA0213 GBAA_pXO1_0213 | Detail |
| O95985 | TOP3B_HUMAN | Homo sapiens (Human) | TOP3B TOP3B1 | Detail |