_EC 3.1.3.108 nocturnin. 4 PDB entries  
EC 3.-.-.- Hydrolases. [52,146 PDB entries]
EC 3.1.-.- Acting on ester bonds. [12,910 PDB entries]
EC 3.1.3.- Phosphoric monoester hydrolases. [3,608 PDB entries]
EC 3.1.3.108 nocturnin. [4 PDB entries]
6bt1

Reaction: (1) Nadph + H2O = phosphate + nadh. (2) NADP(+) + H2O = phosphate + NAD(+).
 


NADPH
+ H2O
=
phosphate
+
NADH

NADP(+)
+ H2O
=
phosphate
+
NAD(+)
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Other name(s): nocturnin (curled).
Comments: The mammalian mitochondrial enzyme is a rhythmically expressed protein that regulates metabolism under the control of circadian clock. It has a slight preference for Nadph over NADP(+). The archaeal enzyme, identified in Methanocaldococcus jannaschii, is bifunctional acting as Nad kinase (EC 2.7.1.23) and Nadp phosphatase with a slight preference for NADP(+) over Nadph.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 4 PDB entries in enzyme class E.C.3.1.3.108

  PDB code Protein
6bt1
Structure of the human nocturnin catalytic domain
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: noct, ccr4, ccrn4l, noc. Expressed in: escherichia coli. Expression_system_taxid: 469008. Expression_system_variant: rosetta 2.
Chain: A (296 residues)
6bt2
Structure of the human nocturnin catalytic domain with bound sulfate anion
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: noct, ccr4, ccrn4l, noc. Expressed in: escherichia coli. Expression_system_taxid: 469008. Expression_system_variant: rosetta 2.
Chains: A, B (270 residues)
6mal
Structure of human nocturnin c-terminal domain
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: noct, ccr4, ccrn4l, noc. Expressed in: escherichia coli bl21(de3). Expression_system_taxid: 469008
Chain: A (303 residues)
6nf0
Nocturnin with bound NADPH substrate
Source: Homo sapiens. Human. Organism_taxid: 9606. Gene: noct, ccr4, ccrn4l, noc. Expressed in: escherichia coli. Expression_system_taxid: 562
Chain: A (298 residues)
Bound ligands:   Het Group NDP corresponds to enzyme reactant NADPH
  Het Group NDP corresponds to enzyme reactant NADP(+)