6XPD | pdb_00006xpd

Cryo-EM structure of human ZnT8 double mutant - D110N and D224N, determined in outward-facing conformation

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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: mpstruc

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]	Cation_efflux	e6xpdA1	A: alpha bundles	X: Cation efflux protein transmembrane domain-like (From Topology)	H: Cation efflux protein transmembrane domain-like (From Topology)	T: Cation efflux protein transmembrane domain-like	F: Cation_efflux	ECOD (1.6)
B [auth A]	UNK_F_TYPE	e6xpdA2	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: Cation efflux protein cytoplasmic domain-like (From Topology)	T: Cation efflux protein cytoplasmic domain-like	F: UNK_F_TYPE	ECOD (1.6)
A [auth B]	Cation_efflux	e6xpdB1	A: alpha bundles	X: Cation efflux protein transmembrane domain-like (From Topology)	H: Cation efflux protein transmembrane domain-like (From Topology)	T: Cation efflux protein transmembrane domain-like	F: Cation_efflux	ECOD (1.6)
A [auth B]	UNK_F_TYPE	e6xpdB2	A: a+b two layers	X: Alpha-lytic protease prodomain-like	H: Cation efflux protein cytoplasmic domain-like (From Topology)	T: Cation efflux protein cytoplasmic domain-like	F: UNK_F_TYPE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth A]	1.20.1510.10	Mainly Alpha	Up-down Bundle	Alpha-lytic protease prodomain-like	Cation efflux protein transmembrane domain	CATH (utative)
A [auth B]	1.20.1510.10	Mainly Alpha	Up-down Bundle	Alpha-lytic protease prodomain-like	Cation efflux protein transmembrane domain	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], B [auth A]	PF01545	Cation efflux transmembrane domain (Cation_efflux)	Cation efflux transmembrane domain	This entry represents the transmembrane domain at the N-terminal in Cation Diffusion Facilitator (CDF) transporter proteins. These proteins are involved in the transport of divalent metal cations across cellular membranes. They facilitate the efflux ...	This entry represents the transmembrane domain at the N-terminal in Cation Diffusion Facilitator (CDF) transporter proteins. These proteins are involved in the transport of divalent metal cations across cellular membranes. They facilitate the efflux or sequestration of metals such as zinc, cadmium, iron, manganese, and cobalt, contributing to metal homeostasis and detoxification. These proteins often function as antiporters, coupling the transport of metal ions with protons or other ions. They play crucial roles in various biological processes, including maintaining cellular metal ion balance, protecting cells from metal toxicity, and regulating metal ion concentrations in specific cellular compartments. These proteins include subfamilies like SLC30A, which are involved in zinc transport, and FieF, which is associated with metal detoxification. [1-2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth A]	Zinc transporter 8	monoatomic cation transmembrane transporter activity zinc ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transition metal ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding monoatomic cation transmembrane transporter activity zinc ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity transition metal ion transmembrane transporter activity metal ion transmembrane transporter activity transmembrane transporter activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding metal cation:monoatomic cation antiporter activity proton transmembrane transporter activity secondary active transmembrane transporter activity antiporter activity zinc:proton antiporter activity metal cation:proton antiporter activity active transmembrane transporter activity	zinc ion import into organelle transport monoatomic ion transmembrane transport zinc ion transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization zinc ion transmembrane transport transition metal ion transport monoatomic ion transport cellular process monoatomic cation transport zinc ion import into organelle transport monoatomic ion transmembrane transport zinc ion transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization zinc ion transmembrane transport transition metal ion transport monoatomic ion transport cellular process monoatomic cation transport import into cell import across plasma membrane inorganic cation import across plasma membrane zinc ion import across plasma membrane inorganic ion import across plasma membrane response to peptide response to stimulus response to chemical response to cytokine response to interleukin-1 response to hexose response to monosaccharide response to carbohydrate response to glucose response to oxygen-containing compound inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis intracellular zinc ion homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis regulation of localization regulation of biological process regulation of cellular process regulation of transport biological regulation regulation of vesicle-mediated transport vesicle-mediated transport biological process involved in interspecies interaction between organisms immune response response to other organism defense response response to type II interferon defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism response to stress innate immune response response to external biotic stimulus response to metal ion response to zinc ion peptide hormone processing regulation of hormone levels signaling receptor ligand precursor processing primary metabolic process gene expression macromolecule biosynthetic process hormone metabolic process protein maturation insulin processing biosynthetic process proteolysis protein processing metabolic process protein metabolic process macromolecule metabolic process amide metabolic process regulation of biological quality insulin metabolic process positive regulation of cell communication establishment of protein localization nitrogen compound transport positive regulation of establishment of protein localization cell communication positive regulation of insulin secretion intracellular protein localization regulation of peptide hormone secretion positive regulation of peptide hormone secretion establishment of protein localization to extracellular region protein secretion regulation of protein secretion regulation of secretion positive regulation of protein localization regulation of hormone secretion regulation of protein localization regulation of peptide secretion signaling positive regulation of biological process positive regulation of secretion by cell hormone secretion protein localization to extracellular region positive regulation of protein transport peptide secretion regulation of secretion by cell secretion by cell positive regulation of hormone secretion positive regulation of secretion amide transport signal release positive regulation of cellular process positive regulation of peptide secretion regulation of signaling secretion regulation of peptide transport regulation of establishment of protein localization export from cell cell-cell signaling regulation of protein transport positive regulation of protein secretion peptide transport positive regulation of transport protein transport regulation of insulin secretion peptide hormone secretion macromolecule localization hormone transport regulation of cell communication insulin secretion positive regulation of signaling	cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle intracellular membrane-bounded organelle intracellular vesicle endomembrane system cytoplasmic vesicle secretory granule secretory vesicle cell periphery cellular anatomical structure plasma membrane membrane membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle intracellular membrane-bounded organelle intracellular vesicle endomembrane system cytoplasmic vesicle secretory granule secretory vesicle cytoplasm vesicle cytoplasmic vesicle membrane bounding membrane of organelle vesicle membrane organelle membrane secretory granule membrane Golgi membrane Golgi apparatus transport vesicle transport vesicle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth A]	IPR050681	Cation Diffusion Facilitator/SLC30A	Family
A [auth B], B [auth A]	IPR002524	Cation efflux	Family
A [auth B], B [auth A]	IPR027469	Cation efflux transmembrane domain superfamily	Homologous Superfamily
A [auth B], B [auth A]	IPR036837	Cation efflux protein, cytoplasmic domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth B], B [auth A]	Pharos: Q8IWU4	type 2 diabetes mellitus acquired metabolic disease Diabetes Mellitus, Non-Insulin-Dependent maturity-onset diabetes of the young psoriasis breast carcinoma pancreatic insulinoma schizophrenia diabetes mellitus inborn carbohydrate metabolic disorder pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A [auth B], B [auth A]	OPM	Transmembrane	Alpha-helical polytopic	Cation diffusion facilitator	Bacterial zinc transporters

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A [auth B], B [auth A]	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Solute Carrier (SLC) Transporter Superfamily	ZnT8 Zn²⁺/H⁺ antiporter, SLC30 family in the presence of Zn²⁺ (one subunit inward facing)

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.