CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.40 | 3-Layer(aba) Sandwich |
|
3.40.50 | Rossmann fold |
|
3.40.50.720 | NAD(P)-binding Rossmann-like Domain |
Domain Context
CATH Clusters
| Superfamily | NAD(P)-binding Rossmann-like Domain |
| Functional Family |
Enzyme Information
| 2.4.99.20 |
2'-phospho-ADP-ribosyl cyclase/2'-phospho-cyclic-ADP-ribose transferase.
based on mapping to UniProt P29241
NADP(+) + nicotinate = nicotinate-adenine dinucleotide phosphate + nicotinamide.
-!- This multiunctional enzyme catalyzes both the removal of nicotinamide from NADP(+), forming 2'-phospho-cyclic ADP-ribose, and the addition of nicotinate to the cyclic product, forming NAADP(+), a calcium messenger that can mobilize intracellular Ca(2+) stores and activate Ca(2+) influx to regulate a wide range of physiological processes. -!- In addition, the enzyme also catalyzes EC 3.2.2.6.
|
| 3.2.2.6 |
ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase.
based on mapping to UniProt P29241
NAD(+) + H(2)O = ADP-D-ribose + nicotinamide.
-!- This multiunctional enzyme catalyzes both the synthesis and hydrolysis of cyclic ADP-ribose, a calcium messenger that can mobilize intracellular Ca(2+) stores and activate Ca(2+) influx to regulate a wide range of physiological processes. -!- In addition, the enzyme also catalyzes EC 2.4.99.20. -!- It is also able to act on beta-nicotinamide D-ribonucleotide. -!- Cf. EC 3.2.2.5.
|
UniProtKB Entries (1)
| P29241 |
NADA_APLCA
Aplysia californica
ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase
|
PDB Structure
| PDB | 1R0S |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | Escherichia |
| Primary Citation |
ADP-ribosyl cyclase; crystal structures reveal a covalent intermediate.
Structure
|
