| ID | Description | N° of binding sites | Bound to chains |
|---|---|---|---|
| 5 | 5'-S-[(3S)-3-azaniumyl-3-carboxypropyl]-5'-thioadenosine | 2 (2 molecules) | A, C |
| 6 | (2~{r})-4-[[(2~{r} + 3~{S} + 4~{r} + 5~{r})-5-(6-aminopurin-9-yl)-3 + 4-bis(oxidanyl)oxolan-2-yl]methyl-[[4-azanyl-1-(methoxymethyl)-2-oxidanylidene-pyrimidin-5-yl]methyl]amino]-2-azanyl-butanoic acid | 2 (2 molecules) | B, D |