Summary: Heterozygous mutations in SLC40A1. encoding a multi-pass membrane protein of the major facilitator superfamily known as ferroportin 1 (FPN1). are responsible for two distinct hereditary iron-overload diseases: ferroportin disease. which is associated with reduced FPN1 activity (i. https://www.ealisboa.com/great-deal-Pentair-Union-Collar-2-U11-200PS-super-offer/