Annotations: 8TUP

Cryo-EM structure of the human MRS2 magnesium channel under Mg2+-free condition

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
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)
E	Serpin	e8tupE1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Serpin	ECOD (v295)
D	Serpin	e8tupD1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Serpin	ECOD (v295)
C	Serpin	e8tupC1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Serpin	ECOD (v295)
B	Serpin	e8tupB1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Serpin	ECOD (v295)
A	Cation_efflux	e8tupA1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Cation_efflux	ECOD (v295)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E	PF22099	Magnesium transporter MRS2-like (MRS2-like)	Magnesium transporter MRS2-like	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E	Magnesium transporter MRS2 homolog, mitochondrial	monoatomic cation transmembrane transporter activity magnesium ion transmembrane transporter activity monoatomic ion transmembrane transporter activity transporter activity metal ion transmembrane transporter activity transmembrane transporter activity cation binding ion binding binding metal ion binding small molecule binding	oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process monocarboxylic acid metabolic process lactate metabolic process mitochondrial magnesium ion transmembrane transport transport magnesium ion transport monoatomic ion transmembrane transport magnesium ion transmembrane transport establishment of localization metal ion transport oxoacid metabolic process carboxylic acid metabolic process small molecule metabolic process metabolic process cellular process monocarboxylic acid metabolic process lactate metabolic process mitochondrial magnesium ion transmembrane transport transport magnesium ion transport monoatomic ion transmembrane transport magnesium ion transmembrane transport establishment of localization metal ion transport monoatomic cation transmembrane transport transmembrane transport localization monoatomic ion transport monoatomic cation transport	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle mitochondrial membrane organelle inner membrane membrane mitochondrial inner membrane organelle envelope mitochondrial envelope organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E	IPR039204	Magnesium transporter MRS2-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D, E	: Q9HD23	glioblastoma malignant mesothelioma lung adenocarcinoma ovarian cancer lung cancer Sjogren syndrome

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

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

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

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

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B, C, D, E	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Channels: Other Ion Channels	Mitochondrial RNA splicing 2 (MRS2) Magnesium transporter under Mg²⁺ condition

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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.