6W4S | pdb_00006w4s

Structure of apo human ferroportin in lipid nanodisc

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Membrane Protein Annotation: OPM
Membrane Protein Annotation: PDBTM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth H]		e6w4sH1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Pro_isomerase	F:	ECOD (20:10:01)
C [auth L]		e6w4sL1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Pro_isomerase	F:	ECOD (20:10:01)
A [auth F]		e6w4sF1	A: Family A G protein-coupled receptor-like	X: Family A G protein-coupled receptor-like	H: Family A G protein-coupled receptor-like	T: Pro_isomerase	F:	ECOD (20:10:01)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth H]	Heavy Chain	IGHV3	-	solute carrier family 40 member 1	SAbDab (2026-03-13)
C [auth L]	Light Chain	IGKV3	Kappa	solute carrier family 40 member 1	SAbDab (2026-03-13)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth F]	PF06963	Ferroportin1 (FPN1) (FPN1)	Ferroportin1 (FPN1)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth H]	Fab45D8 Heavy Chain	-	-	-
C [auth L]	Fab45D8 Light Chain	-	-	-
A [auth F]	Solute carrier family 40 member 1	monoatomic cation transmembrane transporter activity iron ion transmembrane transporter activity monoatomic ion transmembrane transporter activity ferrous iron transmembrane transporter activity transporter activity transition metal ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity binding peptide hormone binding hormone binding cation binding ion binding metal ion binding monoatomic cation transmembrane transporter activity iron ion transmembrane transporter activity monoatomic ion transmembrane transporter activity ferrous iron transmembrane transporter activity transporter activity transition metal ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity binding peptide hormone binding hormone binding cation binding ion binding metal ion binding small molecule binding identical protein binding protein binding	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis developmental process immune system development multicellular organismal process spleen development intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis developmental process immune system development multicellular organismal process spleen development animal organ development hematopoietic or lymphoid organ development anatomical structure morphogenesis multicellular organism development spleen trabecula formation immune system process anatomical structure development anatomical structure formation involved in morphogenesis animal organ morphogenesis trabecula formation trabecula morphogenesis system development regulation of biological process regulation of cellular process negative regulation of programmed cell death regulation of apoptotic process biological regulation negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process cellular process apoptotic process programmed cell death RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process transcription by RNA polymerase II biosynthetic process metabolic process macromolecule metabolic process multicellular organismal-level homeostasis leukocyte homeostasis homeostasis of number of cells lymphocyte homeostasis multicellular organismal-level iron ion homeostasis multicellular organismal-level chemical homeostasis localization cellular localization establishment of localization in cell establishment of localization epithelium development endothelium development tissue development transport monoatomic ion transmembrane transport iron ion transport export from cell iron ion transmembrane transport export across plasma membrane metal ion transport transmembrane transport monoatomic cation transmembrane transport transition metal ion transport monoatomic ion transport monoatomic cation transport iron ion export across plasma membrane positive regulation of DNA-templated transcription positive regulation of biological process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process positive regulation of metabolic process regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process positive regulation of cellular process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of transcription by RNA polymerase II regulation of macromolecule metabolic process positive regulation of transcription by RNA polymerase II positive regulation of RNA metabolic process regulation of gene expression positive regulation of RNA biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process	cellular anatomical structure membrane intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane membrane-bounded organelle nucleus membrane-enclosed lumen cellular anatomical structure membrane intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane basal part of cell basal plasma membrane plasma membrane region basolateral plasma membrane membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen transport vesicle synapse intracellular vesicle endomembrane system presynapse cytoplasmic vesicle synaptic vesicle cell junction secretory vesicle vesicle exocytic vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth F]	IPR036259	MFS transporter superfamily	Homologous Superfamily
A [auth F]	IPR009716	Ferroportin-1	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth F]	Pharos: Q9NP59	hereditary hemochromatosis hemochromatosis type 4 liver cancer endometriosis Familial apoceruloplasmin deficiency anemia pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia subependymal giant cell astrocytoma gastric carcinoma ulcerative colitis aceruloplasminemia hepatocellular carcinoma adrenal cortex carcinoma inborn errors of metabolism astrocytic tumor hereditary hemochromatosis hemochromatosis type 4 liver cancer endometriosis Familial apoceruloplasmin deficiency anemia pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia subependymal giant cell astrocytoma gastric carcinoma ulcerative colitis aceruloplasminemia hepatocellular carcinoma adrenal cortex carcinoma inborn errors of metabolism astrocytic tumor breast cancer lung carcinoma cholestasis malignant pancreatic neoplasm congestive heart failure non-small cell lung carcinoma dilated cardiomyopathy pancreatic ductal adenocarcinoma pilocytic astrocytoma tuberculosis glioblastoma acute myeloid leukemia African iron overload autism liver neoplasm malignant ependymoma medulloblastoma Crohn disease oligodendroglioma Duchenne muscular dystrophy pancreatic intraductal papillary-mucinous neoplasm exocrine pancreatic carcinoma primitive neuroectodermal tumor gastric cancer type 2 diabetes mellitus adenoma lung adenocarcinoma malignant glioma cystic fibrosis ovarian cancer

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth F]	OPM	Transmembrane	Alpha-helical polytopic	Major Facilitator Superfamily (MFS)	Ferroportin

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth F]	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A [auth F]	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth F]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Major Facilitator Superfamily (MFS) Transporters	Ferroportin (FPN) Fe²⁺ transporter (SLC40A1), apo protein in nanodisc

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.