| ID | Description | N° of binding sites | Bound to chains |
|---|---|---|---|
| 2 | S-adenosyl-L-homocysteine | 2 (2 molecules) | A, D |
| 3 | 5-[[2-[(2~{r} + 3~{S} + 4~{r} + 5~{r})-5-(6-aminopurin-9-yl)-3 + 4-bis(oxidanyl)oxolan-2-yl]ethylamino]methyl]-4-azanyl-1-[2-(4-bromanylphenoxy)ethyl]pyrimidin-2-one | 2 (2 molecules) | B, C |