Simple molecule 4a-hydroxytetrahydrobiopterin  
 
Modifications:
In compartment: neuron
- 4a-hydroxytetrahydrobiopterin@neuron 
 
 
Participates in complexes:
Participates in reactions:
As Reactant or Product:- L-tyrosine@neuron 
  + tetrahydrobiopterin@neuron 
  + O2@neuron 
  → 
  L-dopa@neuron 
  + 4a-hydroxytetrahydrobiopterin@neuron 
 
 
As Catalyser: