Submissions
GlyTouCan
Glycan Structure Repository
GlyComb
Glycoconjugate Repository
GlycoPOST
Glycomics MS raw data Repository
UniCarb-DR
Glycomics MS Repository for glycan annotations from GlycoWorkbench
LM-GlycoRepo
Repository for lectin-assisted multimodality data
All Resources
Genes / Proteins / Lipids Glycans / Glycoconjugates Glycomes Pathways / Interactions / Diseases / OrganismsTools
SugarDrawer
GlycanBuilder
Glycan Converters
GlycoMaple
GlycomeAtlas
LM-GlycomeAtlas
GALAXY
MCAW
GlycoSim
GRable
Guidelines
MIRAGE
Defective SLC40A1 causes hemochromatosis 4 (HFE4) (duodenum)
Summary
- Organism
- Homo sapiens (human)
- Reactome
- R-HSA-5655799
- PubChem
- R-HSA-5655799
- Description
-
- The primary site for absorption of dietary iron is the duodenum. Ferrous iron (Fe2+) is taken up from the gut lumen across the apical membranes of enterocytes and released into the portal vein circulation across basolateral membranes. The human gene SLC40A1 encodes the metal transporter protein MTP1 (aka ferroportin or IREG1). This protein resides on the basolateral membrane of enterocytes and mediates ferrous iron efflux into the portal vein. SLC40A1 colocalises with hephaestin (HEPH) which stablises it and is necessary for the efflux reaction to occur.
Defects in SLC40A1 can cause hemochromatosis 4 (HFE4; MIM:606069), a disorder of iron metabolism characterised by iron overload. Excess iron is deposited in a variety of organs leading to their failure, resulting in serious illnesses including cirrhosis, hepatomas, diabetes, cardiomyopathy, arthritis and hypogonadotropic hypogonadism. Severe effects of the disease don't usually appear until after decades of progressive iron overloading (De Domenico et al. 2005, 2006, 2011, Kaplan et al. 2011).
- The primary site for absorption of dietary iron is the duodenum. Ferrous iron (Fe2+) is taken up from the gut lumen across the apical membranes of enterocytes and released into the portal vein circulation across basolateral membranes. The human gene SLC40A1 encodes the metal transporter protein MTP1 (aka ferroportin or IREG1). This protein resides on the basolateral membrane of enterocytes and mediates ferrous iron efflux into the portal vein. SLC40A1 colocalises with hephaestin (HEPH) which stablises it and is necessary for the efflux reaction to occur.
Click on a node on the pathway to see its details. Glycoproteins are marked with a glycoprotein icon in their name.
| UniProt ID | Protein Name | Gene Symbol | Pathway Viewer |
|---|---|---|---|
| Q9BQS7 | Hephaestin |
|
view |
| Q9NP59 | Ferroportin |
|
view |
