Nucleotides

Vasopressin Neurophysin

Peptides

Endorphins 
Camel-b
Human-b

Enkephalins
Leucine-Enk
Methionine-Enk

POMC
GallusGallus
SusScrofa

Pre-Opioids
Pro Enk
Pro Dynorphin

Box Pairing Gene

Neurophysin-Vasopressin
Norwegian Rat-D.I.
Human-coeptin Precursor

3D Structures from Protein Data Bank for RasMol Viewing

Neurophysin-Vasopressin
Neurophysin-Vasopressin-2BN2
Neurophysin-Vasopressin-1NPO