| R01232 | [Fig] | Bis(5'-guanosyl) tetraphosphate + H2O | <=> | GTP + GMP |
| R00184 | [Fig] | AppppA + H2O | <=> | ATP + 5'-AMP |
| R00969 | [Fig] | P1,P4-Bis(5'-uridyl) tetraphosphate + H2O | <=> | UTP + UMP |
| R02805 | [Fig] | P1,P4-Bis(5'-xanthosyl) tetraphosphate + H2O | <=> | XTP + (9-D-Ribosylxanthine)-5'-phosphate |