Table 2.
Similarities of hydra xeroderma pigmentosum (XP) proteins with those from other basal metazoans.
| XP protein | Name of the organism | Number of amino acids | Percent identity with Hydra Protein | Percent similarity with Hydra Protein |
|---|---|---|---|---|
| XPA Binds to damaged DNA and verifies the lesion |
Trichoplax adhaerens (Placozoan) | 266 | 44.3 | 77.0 |
| Amphimedon queenslandica (Sponge) | 281 | 38.2 | 72.1 | |
| Stylophora pistillata (Coral) | 267 | 51.7 | 81.3 | |
| Pocillopora damicornis (Coral) | 272 | 44.0 | 71.0 | |
| Nematostella vectensis (Sea anemone) | 266 | 53.0 | 79.3 | |
| Acropora millepora (Coral) | 247 | 48.2 | 82.0 | |
| XPB Core component of TFIIH, 3'→5' ATP-dependent helicase |
Trichoplax sp. H2 | 799 | 68.0 | 88.8 |
| Amphimedon queenslandica | 664 | 64.7 | 85.9 | |
| Stylophora pistillata | 777 | 69.9 | 87.2 | |
| Pocillopora damicornis | 792 | 71.2 | 88.9 | |
| Nematostella vectensis | 796 | 70.5 | 88.4 | |
| Acropora millepora | 794 | 71.0 | 89.7 | |
| XPD Bridges the core and the CAK complexes of TFIIH, 5'→3' ATP-dependent helicase. |
Trichoplax sp. H2 | 761 | 69.4 | 91.1 |
| Amphimedon queenslandica | 754 | 63.6 | 88.5 | |
| Stylophora pistillata | 759 | 76.6 | 91.9 | |
| Pocillopora damicornis | 759 | 76.9 | 92.6 | |
| Nematostella vectensis | 735 | 75.7 | 92.8 | |
| Acropora millepora | 759 | 77.7 | 91.8 | |
| Exaiptasia diaphana (Sea anemone) | 782 | 74.1 | 88.6 | |
| XPF DNA endonuclease which incises damaged strand at 5' junction of the NER bubble. |
Trichoplax sp. H2 | 846 | 45.1 | 75.6 |
| Amphimedon queenslandica | 917 | 40.7 | 70.9 | |
| Stylophora pistillata | 917 | 46.8 | 73.0 | |
| Exaiptasia diaphana | 849 | 43.4 | 69.6 | |
| Nematostella vectensis | 915 | 47.5 | 73.8 | |
| Acropora millepora | 918 | 48.3 | 73.0 |