Top ▲

Free fatty acid receptors C

Unless otherwise stated all data on this page refer to the human proteins. Gene information is provided for human (Hs), mouse (Mm) and rat (Rn).

GtoImmuPdb view: ON   


« Hide More detailed introduction

Free fatty acid receptors (FFA, nomenclature as agreed by the NC-IUPHAR Subcommittee on free fatty acid receptors [9,37]) are activated by free fatty acids. Long-chain saturated and unsaturated fatty acids (C14.0 (myristic acid), C16:0 (palmitic acid), C18:1 (oleic acid), C18:2 (linoleic acid), C18:3, (α-linolenic acid), C20:4 (arachidonic acid), C20:5,n-3 (EPA) and C22:6,n-3 (docosahexaenoic acid)) activate FFA1 [3,15,18] and FFA4 receptors [10,14,28], while short chain fatty acids (C2 (acetic acid), C3 (propanoic acid), C4 (butyric acid) and C5 (pentanoic acid)) activate FFA2 [4,19,26] and FFA3 [4,19] receptors. The crystal structure for agonist bound FFA1 has been described [35].


Targets of relevance to immunopharmacology are highlighted in blue

FFA1 receptor C Show summary » More detailed page

FFA2 receptor C Show summary » More detailed page

FFA3 receptor C Show summary » More detailed page

FFA4 receptor C Show summary » More detailed page

GPR42 C Show summary » More detailed page


Show »

Further reading

Show »


Show »

NC-IUPHAR subcommittee and family contributors

Show »

How to cite this family page

Database page citation:

Leigh Stoddart, Nick Holliday, Celia Briscoe, Andrew Brown, Stephen Jenkinson, Graeme Milligan, Amy E. Monaghan. Free fatty acid receptors. Accessed on 10/12/2018. IUPHAR/BPS Guide to PHARMACOLOGY,

Concise Guide to PHARMACOLOGY citation:

Alexander SPH, Christopoulos A, Davenport AP, Kelly E, Marrion NV, Peters JA, Faccenda E, Harding SD, Pawson AJ, Sharman JL, Southan C, Davies JA; CGTP Collaborators. (2017) The Concise Guide to PHARMACOLOGY 2017/18: G protein-coupled receptors. Br J Pharmacol. 174 Suppl 1: S17-S129.