3FB2

Crystal structure of the human brain alpha spectrin repeats 15 and 16. Northeast Structural Genomics Consortium target HR5563a.

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Spectrin	e3fb2A1	A: alpha bundles	X: Spectrin repeat-like	H: Spectrin repeat (From Topology)	T: Spectrin repeat	F: Spectrin	ECOD (1.6)
B	Spectrin	e3fb2B3	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)
B	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, B	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, B	Spectrin alpha chain, brain spectrin	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding actin filament binding cell adhesion molecule binding cadherin binding calmodulin binding cation binding ion binding binding calcium ion binding metal ion binding small molecule binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding actin filament binding cell adhesion molecule binding cadherin binding calmodulin 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 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 organization organelle organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis cytoskeleton organization 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 negative regulation of supramolecular fiber organization regulation of biological quality 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 biological regulation regulation of actin polymerization or depolymerization 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 membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cellular anatomical structure cell junction membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane intracellular organelle intracellular membrane-bounded organelle cytoskeleton membraneless organelle intracellular membraneless organelle microtubule cytoskeleton spectrin protein-containing complex cell cortex cortical cytoskeleton actin cytoskeleton cortical actin cytoskeleton tertiary granule lumen membrane-enclosed lumen intracellular vesicle endomembrane system intracellular organelle lumen tertiary granule organelle lumen cytoplasmic vesicle secretory granule secretory vesicle vesicle lumen cytoplasmic vesicle lumen secretory granule lumen specific granule lumen specific granule cell projection

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR035825	Alpha Spectrin, SH3 domain	Domain
A, B	IPR014837	EF-hand, Ca insensitive	Domain
A, B	IPR036028	SH3-like domain superfamily	Homologous Superfamily
A, B	IPR002048	EF-hand domain	Domain
A, B	IPR011992	EF-hand domain pair	Homologous Superfamily
A, B	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A, B	IPR001452	SH3 domain	Domain
A, B	IPR018159	Spectrin/alpha-actinin	Repeat
A, B	IPR002017	Spectrin repeat	Repeat

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q13813	developmental and epileptic encephalopathy, 5 West syndrome Liver Cirrhosis, Experimental intellectual disability oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm urinary bladder cancer allergic rhinitis glioblastoma neurodegenerative disease ovarian cancer psoriasis astrocytic tumor epilepsy lung cancer developmental and epileptic encephalopathy, 5 West syndrome Liver Cirrhosis, Experimental intellectual disability oligodendroglioma pancreatic intraductal papillary-mucinous neoplasm urinary bladder cancer allergic rhinitis glioblastoma neurodegenerative disease ovarian cancer psoriasis astrocytic tumor epilepsy lung cancer malignant pancreatic neoplasm pancreatic ductal adenocarcinoma subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor developmental and epileptic encephalopathy large cell medulloblastoma malignant ependymoma medulloblastoma

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.