From NuGOwiki

Please provide the Functional Taxonomy of the compound. The following functional classes have been provided for the NuGOwiki database:

1. electrical signalling (ions)
2. paracrine neurotransmitters (signalling)
3. autocrine neurotransmitters (signalling)
4. steroid hormones (signalling)
5. amine hormones (signalling)
6. cofactor (enzyme activity modulators)
7. coenzyme (enzyme activity modulators)
8. activator (enzyme activity modulators)
9. inhibitor (enzyme activity modulators)
10. agonist (receptor activity modulators)
11. antagonist (receptor activity modulators)
12. membrane fluidity
13. carriers