Annotations: 6X4S

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
D	MCU_C	e6x4sD1	A: alpha arrays	X: Mitochondrial calcium uniporter (MCU) (From Topology)	H: Mitochondrial calcium uniporter (MCU) (From Topology)	T: Mitochondrial calcium uniporter (MCU)	F: MCU_C	ECOD (1.6)
C	MCU_C	e6x4sC1	A: alpha arrays	X: Mitochondrial calcium uniporter (MCU) (From Topology)	H: Mitochondrial calcium uniporter (MCU) (From Topology)	T: Mitochondrial calcium uniporter (MCU)	F: MCU_C	ECOD (1.6)
B	MCU_C	e6x4sB1	A: alpha arrays	X: Mitochondrial calcium uniporter (MCU) (From Topology)	H: Mitochondrial calcium uniporter (MCU) (From Topology)	T: Mitochondrial calcium uniporter (MCU)	F: MCU_C	ECOD (1.6)
A	MCU_C	e6x4sA1	A: alpha arrays	X: Mitochondrial calcium uniporter (MCU) (From Topology)	H: Mitochondrial calcium uniporter (MCU) (From Topology)	T: Mitochondrial calcium uniporter (MCU)	F: MCU_C	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F, G, H	Calcium uniporter protein,Protein EMRE homolog, mitochondrial-like Protein fusion	active transmembrane transporter activity transporter activity uniporter activity transmembrane transporter activity secondary active transmembrane transporter activity calcium channel activity monoatomic cation transmembrane transporter activity monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity calcium ion transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity active transmembrane transporter activity transporter activity uniporter activity transmembrane transporter activity secondary active transmembrane transporter activity calcium channel activity monoatomic cation transmembrane transporter activity monoatomic ion channel activity monoatomic cation channel activity passive transmembrane transporter activity calcium ion transmembrane transporter activity channel activity monoatomic ion transmembrane transporter activity metal ion transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	transport monoatomic ion transmembrane transport establishment of localization calcium ion transport metal ion transport monoatomic cation transmembrane transport transmembrane transport localization mitochondrial calcium ion transmembrane transport monoatomic ion transport cellular process calcium import into the mitochondrion monoatomic cation transport calcium ion transmembrane transport transport monoatomic ion transmembrane transport establishment of localization calcium ion transport metal ion transport monoatomic cation transmembrane transport transmembrane transport localization mitochondrial calcium ion transmembrane transport monoatomic ion transport cellular process calcium import into the mitochondrion monoatomic cation transport calcium ion transmembrane transport mitochondrial calcium ion homeostasis inorganic ion homeostasis intracellular calcium ion homeostasis homeostatic process calcium ion homeostasis cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis	membrane-bounded organelle protein-containing complex intracellular anatomical structure mitochondrial membrane organelle inner membrane mitochondrion membrane protein complex transporter complex intracellular organelle organelle envelope cellular anatomical structure uniplex complex mitochondrial protein-containing complex membrane membrane-bounded organelle protein-containing complex intracellular anatomical structure mitochondrial membrane organelle inner membrane mitochondrion membrane protein complex transporter complex intracellular organelle organelle envelope cellular anatomical structure uniplex complex mitochondrial protein-containing complex membrane cation channel complex intracellular membrane-bounded organelle mitochondrial inner membrane inner mitochondrial membrane protein complex transmembrane transporter complex organelle mitochondrial envelope cytoplasm organelle membrane calcium channel complex monoatomic ion channel complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F, G, H	IPR039055	MCU family	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR006769	Calcium uniporter protein, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR018782	Essential MCU regulator, mitochondrial	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D, E A, B, C, D, E, F, G, H	OPM	Transmembrane	Alpha-helical polytopic	Mitochondrial calcium uniporter	Mitochondrial calcium uniporter

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D, E A, B, C, D, E, F, G, H	MemProtMD	Annotated as membrane protein by MemProtMD

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.