1SJI | pdb_00001sji

Comparing skeletal and cardiac calsequestrin structures and their calcium binding: a proposed mechanism for coupled calcium binding and protein polymerization

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1sjia1	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	automated matches	automated matches	dog (Canis lupus familiaris ) [TaxId: 9615 ],	SCOPe (2.08)
B	d1sjib1	Alpha and beta proteins (a/b)	Thioredoxin fold	Thioredoxin-like	automated matches	automated matches	dog (Canis lupus familiaris ) [TaxId: 9615 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Sigma_1_2	e1sjiA2	A: a/b three-layered sandwiches	X: HTH	H: Nudix	T: winged helix domain	F: Sigma_1_2	ECOD (v294.1)
A	Chorismate_bind	e1sjiA4	A: a/b three-layered sandwiches	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Chorismate_bind	ECOD (v294.1)
B	Sigma_1_2	e1sjiB2	A: a/b three-layered sandwiches	X: HTH	H: Nudix	T: winged helix domain	F: Sigma_1_2	ECOD (v294.1)
B	Chorismate_bind	e1sjiB4	A: a/b three-layered sandwiches	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: Chorismate_bind	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)
B	3.40.30.10	Alpha Beta	3-Layer(aba) Sandwich	Glutaredoxin	Glutaredoxin	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01216	Calsequestrin (Calsequestrin)	Calsequestrin	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Calsequestrin, cardiac muscle isoform	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	cellular response to stimulus regulation of calcium ion transport regulation of localization multicellular organismal process system process regulation of cellular process response to stimulus regulation of heart contraction regulation of system process sarcoplasmic reticulum calcium ion transport release of sequestered calcium ion into cytosol by sarcoplasmic reticulum cardiac muscle contraction calcium ion transport intracellular signal transduction cell communication cellular response to stimulus regulation of calcium ion transport regulation of localization multicellular organismal process system process regulation of cellular process response to stimulus regulation of heart contraction regulation of system process sarcoplasmic reticulum calcium ion transport release of sequestered calcium ion into cytosol by sarcoplasmic reticulum cardiac muscle contraction calcium ion transport intracellular signal transduction cell communication localization intercellular transport circulatory system process intracellular signaling cassette signal transduction monoatomic cation transport release of sequestered calcium ion into cytosol by endoplasmic reticulum regulation of biological process regulation of release of sequestered calcium ion into cytosol regulation of monoatomic ion transport regulation of cardiac muscle contraction muscle contraction establishment of localization transmembrane transport release of sequestered calcium ion into cytosol regulation of transmembrane transport regulation of blood circulation regulation of striated muscle contraction calcium-mediated signaling regulation of muscle contraction heart process transport signaling monoatomic ion transmembrane transport regulation of monoatomic ion transmembrane transport regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion metal ion transport striated muscle contraction regulation of calcium ion transmembrane transport monoatomic cation transmembrane transport monoatomic ion transport regulation of multicellular organismal process regulation of metal ion transport blood circulation calcium ion transmembrane import into cytosol regulation of cardiac muscle contraction by calcium ion signaling regulation of transport biological regulation muscle system process regulation of muscle system process cellular process regulation of monoatomic cation transmembrane transport heart contraction calcium ion transmembrane transport regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum	membrane-bounded organelle intracellular anatomical structure intracellular membrane-bounded organelle endomembrane system sarcoplasm intracellular organelle cellular anatomical structure organelle endoplasmic reticulum sarcoplasmic reticulum cytoplasm membrane-enclosed lumen sarcoplasmic reticulum lumen intracellular organelle lumen membrane-bounded organelle intracellular anatomical structure intracellular membrane-bounded organelle endomembrane system sarcoplasm intracellular organelle cellular anatomical structure organelle endoplasmic reticulum sarcoplasmic reticulum cytoplasm membrane-enclosed lumen sarcoplasmic reticulum lumen intracellular organelle lumen endoplasmic reticulum lumen organelle lumen intracellular membraneless organelle Z disc sarcomere I band membraneless organelle contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR041858	Calsequestrin, middle TRX-fold domain	Domain
A, B	IPR001393	Calsequestrin	Family
A, B	IPR041860	Calsequestrin, C-terminal TRX-fold domain	Domain
A, B	IPR018233	Calsequestrin, conserved site	Conserved Site
A, B	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
A, B	IPR041859	Calsequestrin, N-terminal TRX-fold domain	Domain

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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.