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	subscription/membership/fee required	Atypon	https:///www.science.org/doi/10.1126/science.1325670?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub 0pubmed
MC2R	free resource	BioCyc	https://biocyc.org/gene?orgid=HUMAN&id=G66-31213
Gene Ontology annotations from this paper	free resource	Gene Ontology	http://amigo.geneontology.org/amigo/reference/PMID:1325670
	free resource	GlyGen glycoinformatics resource	https://glygen.org/publication/PubMed/1325670/
	free resource	Mouse Genome Informatics (MGI)	http://www.informatics.jax.org/reference/1325670
Melanocortin receptors - overview and references	free resource	Guide to Pharmacology	https://www.guidetopharmacology.org/GRAC/FamilyDisplayForward?familyId=38
Cited by Patents in	free resource	The Lens - Patent Citations	https://www.lens.org/lens/search/patent/list?q=citation_id:1325670