Three forms of the sulfonylurea receptor are known, SUR1 encoded by the ABCC8 gene, and SUR2A and SUR2B, which are splice variants arising from a single ABCC9 gene.
Postoje tri forme sulfonilurejnog receptora, SUR1 kodiran ABCC8 genom i SUR2A i SUR2B koji su splajsne varijante jednog ABCC9 gena.