Annotations: 3EDU

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Spectrin	e3eduA1	A: alpha bundles	X: Spectrin repeat-like	H: Spectrin repeat (From Topology)	T: Spectrin repeat	F: Spectrin	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.58.60	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00435	Spectrin repeat (Spectrin)	Spectrin repeat	Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference [2]. The spectr ...	Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference [2]. The spectrin domain- repeat forms a three helix bundle. The second helix is interrupted by proline in some sequences. The repeats are defined by a characteristic tryptophan (W) residue at position 17 in helix A and a leucine (L) at 2 residues from the carboxyl end of helix C. Although the domain occurs in multiple repeats along sequences, the domains are actually stable on their own - ie they act, biophysically, like domains rather than repeats that along function when aggregated.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Spectrin beta chain, erythrocyte	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding ankyrin binding structural constituent of cytoskeleton structural molecule activity	cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis cytoskeleton organization cell junction organization modification of postsynaptic actin cytoskeleton synapse organization modification of postsynaptic structure modification of synaptic structure regulation of cellular process regulation of cellular component size cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis cytoskeleton organization cell junction organization modification of postsynaptic actin cytoskeleton synapse organization modification of postsynaptic structure modification of synaptic structure regulation of cellular process regulation of cellular component size negative regulation of biological process protein-containing complex disassembly regulation of protein-containing complex disassembly actin filament depolymerization regulation of actin filament depolymerization cellular component biogenesis actin filament capping cellular component assembly regulation of biological quality negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization cellular component disassembly regulation of biological process negative regulation of cellular component organization actin filament organization regulation of organelle organization negative regulation of protein depolymerization negative regulation of protein-containing complex assembly regulation of protein polymerization regulation of supramolecular fiber organization supramolecular fiber organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process regulation of protein-containing complex assembly negative regulation of protein-containing complex disassembly negative regulation of cellular process protein-containing complex assembly negative regulation of protein polymerization regulation of actin filament polymerization actin polymerization or depolymerization protein polymerization regulation of actin filament organization actin filament polymerization protein-containing complex organization regulation of protein depolymerization negative regulation of cytoskeleton organization regulation of actin polymerization or depolymerization biological regulation regulation of cellular component biogenesis negative regulation of organelle organization regulation of actin filament length regulation of actin cytoskeleton organization negative regulation of actin filament depolymerization protein depolymerization regulation of anatomical structure size	cellular anatomical structure cell junction intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton cell surface cytoplasm cytosol cell periphery plasma membrane cellular anatomical structure cell junction intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton cell surface cytoplasm cytosol cell periphery plasma membrane membrane protein-containing complex synapse glutamatergic synapse spectrin cell cortex cortical cytoskeleton cortical actin cytoskeleton spectrin-associated cytoskeleton cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane postsynapse cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001715	Calponin homology domain	Domain
A	IPR001589	Actinin-type actin-binding domain, conserved site	Conserved Site
A	IPR036872	CH domain superfamily	Homologous Superfamily
A	IPR018159	Spectrin/alpha-actinin	Repeat
A	IPR016343	Spectrin, beta subunit	Family
A	IPR002017	Spectrin repeat	Repeat

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P11277	hereditary spherocytosis hereditary elliptocytosis hereditary spherocytosis type 2 elliptocytosis 3 hemolytic anemia neonatal anemia familial hemolytic anemia medulloblastoma osteosarcoma psoriasis SPECTRIN TLEMCEN PHENOTYPE glioblastoma large cell medulloblastoma malignant glioma pilocytic astrocytoma hereditary spherocytosis hereditary elliptocytosis hereditary spherocytosis type 2 elliptocytosis 3 hemolytic anemia neonatal anemia familial hemolytic anemia medulloblastoma osteosarcoma psoriasis SPECTRIN TLEMCEN PHENOTYPE glioblastoma large cell medulloblastoma malignant glioma pilocytic astrocytoma lung adenocarcinoma MALT lymphoma primitive neuroectodermal tumor atypical teratoid rhabdoid tumor malignant ependymoma

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.