6WIK | pdb_00006wik

Cryo-EM structure of SLC40/ferroportin with Fab in the presence of hepcidin

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
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)
C [auth A]	LRR_1,LRR_8	e6wikA1	A: alpha bundles	X: cradle loop barrel	H: N-terminal domain of poxin	T: N-terminal domain of poxin	F: LRR_1,LRR_8	ECOD (develop294)
B [auth D]	LRR_1,LRR_8	e6wikD1	A: alpha bundles	X: cradle loop barrel	H: N-terminal domain of poxin	T: N-terminal domain of poxin	F: LRR_1,LRR_8	ECOD (develop294)
A [auth C]	LRR_1,LRR_8	e6wikC1	A: alpha bundles	X: cradle loop barrel	H: N-terminal domain of poxin	T: N-terminal domain of poxin	F: LRR_1,LRR_8	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth D]	Heavy Chain	IGHV14	-	solute carrier family 40 protein	SAbDab (2026-03-20)
A [auth C]	Light Chain	IGKV6	Kappa	solute carrier family 40 protein	SAbDab (2026-03-20)

Protein Family Annotation Pfam Database Homepage

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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth A]	Solute carrier family 40 protein	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	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	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery basal part of cell membrane plasma membrane basal plasma membrane plasma membrane region basolateral plasma membrane membrane-bounded organelle nucleus membrane-enclosed lumen cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery basal part of cell membrane plasma membrane 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
B [auth D]	11F9 Fab heavy-chain	-	-	-
A [auth C]	11F9 Fab light-chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

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

Membrane Protein Annotation: OPM OPM Database Homepage

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

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
C [auth A]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Major Facilitator Superfamily (MFS) Transporters	Ferroportin (FPN) Fe²⁺ transporter (SLC40A1) in complex with Fab

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.