1DXX

N-terminal Actin-binding Domain of Human Dystrophin

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1dxxa1	All alpha proteins	CH domain-like	Calponin-homology domain, CH-domain	Calponin-homology domain, CH-domain	Dystrophin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1dxxb1	All alpha proteins	CH domain-like	Calponin-homology domain, CH-domain	Calponin-homology domain, CH-domain	Dystrophin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d1dxxd1	All alpha proteins	CH domain-like	Calponin-homology domain, CH-domain	Calponin-homology domain, CH-domain	Dystrophin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d1dxxc1	All alpha proteins	CH domain-like	Calponin-homology domain, CH-domain	Calponin-homology domain, CH-domain	Dystrophin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Calponin-homology domain, type 1/2 family	8025024	4004022	SCOP2 (2022-06-29)
A	SCOP2 Family	Calponin-homology domain, type 1/2 family	8025026	4004022	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Calponin-homology domain, CH-domain	8037403	3000264	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Calponin-homology domain, CH-domain	8037405	3000264	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037405	3000264	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037403	3000264	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037403	3000264	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037405	3000264	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037403	3000264	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Calponin-homology domain, CH-domain	8037405	3000264	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	CH	e1dxxA1	A: alpha bundles	X: CH domain-like	H: Calponin-homology domain-like (From Topology)	T: Calponin-homology domain-like	F: CH	ECOD (1.6)
B	CH	e1dxxB1	A: alpha bundles	X: CH domain-like	H: Calponin-homology domain-like (From Topology)	T: Calponin-homology domain-like	F: CH	ECOD (1.6)
D	CH	e1dxxD1	A: alpha bundles	X: CH domain-like	H: Calponin-homology domain-like (From Topology)	T: Calponin-homology domain-like	F: CH	ECOD (1.6)
C	CH	e1dxxC1	A: alpha bundles	X: CH domain-like	H: Calponin-homology domain-like (From Topology)	T: Calponin-homology domain-like	F: CH	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.418.10	Mainly Alpha	Orthogonal Bundle	Actin-binding Protein, T-fimbrin	domain 1	CATH (4.3.0)
B	1.10.418.10	Mainly Alpha	Orthogonal Bundle	Actin-binding Protein, T-fimbrin	domain 1	CATH (4.3.0)
D	1.10.418.10	Mainly Alpha	Orthogonal Bundle	Actin-binding Protein, T-fimbrin	domain 1	CATH (4.3.0)
C	1.10.418.10	Mainly Alpha	Orthogonal Bundle	Actin-binding Protein, T-fimbrin	domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF00307	Calponin homology (CH) domain (CH)	Calponin homology (CH) domain	The CH domain is found in both cytoskeletal proteins and signal transduction proteins [1]. The CH domain is involved in actin binding in some members of the family. However in calponins there is evidence that the CH domain is not involved in its ac ...	The CH domain is found in both cytoskeletal proteins and signal transduction proteins [1]. The CH domain is involved in actin binding in some members of the family. However in calponins there is evidence that the CH domain is not involved in its actin binding activity [4]. Most member proteins have from two to four copies of the CH domain, however some proteins such as calponin and Swiss:P15498 have only a single copy.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	DYSTROPHIN	structural molecule activity structural constituent of muscle nitric-oxide synthase binding protein binding binding enzyme binding cytoskeletal protein binding vinculin binding dystroglycan binding actin binding myosin binding structural constituent of cytoskeleton cation binding transition metal ion binding structural molecule activity structural constituent of muscle nitric-oxide synthase binding protein binding binding enzyme binding cytoskeletal protein binding vinculin binding dystroglycan binding actin binding myosin binding structural constituent of cytoskeleton cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	peptide biosynthetic process biosynthetic process metabolic process peptide metabolic process heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process peptide biosynthetic process biosynthetic process metabolic process peptide metabolic process heart process multicellular organismal process system process regulation of biological process regulation of heart contraction regulation of system process biological regulation circulatory system process regulation of blood circulation regulation of multicellular organismal process regulation of biological quality heart contraction blood circulation regulation of heart rate organelle assembly plasma membrane bounded cell projection organization motile cilium assembly cell projection organization plasma membrane bounded cell projection assembly cellular component biogenesis cellular component organization organelle organization cellular component assembly cilium assembly cellular process cellular component organization or biogenesis cilium organization cell projection assembly protein localization localization cellular localization cellular macromolecule localization macromolecule localization nervous system process neuromuscular process skeletal muscle contraction muscle contraction muscle system process regulation of muscle system process striated muscle contraction multicellular organismal movement musculoskeletal movement regulation of striated muscle contraction regulation of muscle contraction regulation of skeletal muscle contraction regulation of calcium ion transport regulation of localization regulation of cellular process intracellular calcium ion homeostasis negative regulation of biological process sarcoplasmic reticulum calcium ion transport release of sequestered calcium ion into cytosol by sarcoplasmic reticulum calcium ion transport monoatomic cation homeostasis monoatomic cation transport intracellular monoatomic ion homeostasis release of sequestered calcium ion into cytosol by endoplasmic reticulum regulation of release of sequestered calcium ion into cytosol regulation of monoatomic ion transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport maintenance of location transmembrane transport release of sequestered calcium ion into cytosol regulation of transmembrane transport chemical homeostasis inorganic ion homeostasis transport homeostatic process monoatomic ion transmembrane transport calcium ion homeostasis regulation of monoatomic ion transmembrane transport negative regulation of sequestering of calcium ion metal ion transport maintenance of location in cell regulation of calcium ion transmembrane transport monoatomic cation transmembrane transport intracellular monoatomic cation homeostasis monoatomic ion homeostasis negative regulation of cellular process monoatomic ion transport intracellular chemical homeostasis regulation of metal ion transport regulation of sequestering of calcium ion calcium ion transmembrane import into cytosol regulation of transport sequestering of calcium ion cellular homeostasis regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum regulation of calcium ion transmembrane transporter activity regulation of cation channel activity regulation of molecular function regulation of transmembrane transporter activity regulation of transporter activity regulation of monoatomic ion transmembrane transporter activity regulation of ryanodine-sensitive calcium-release channel activity developmental process muscle structure development animal organ development anatomical structure development muscle organ development positive regulation of cation transmembrane transport positive regulation of sodium ion transmembrane transporter activity positive regulation of biological process sodium ion transmembrane transport regulation of sodium ion transport regulation of sodium ion transmembrane transport positive regulation of sodium ion transport regulation of sodium ion transmembrane transporter activity positive regulation of molecular function positive regulation of monoatomic ion transport positive regulation of transmembrane transport positive regulation of sodium ion transmembrane transport positive regulation of monoatomic ion transmembrane transport positive regulation of cellular process positive regulation of transport positive regulation of transporter activity positive regulation of ion transmembrane transporter activity sodium ion transport regulation of neuron projection development regulation of cellular component organization positive regulation of cellular component organization cellular developmental process cell development neuron projection development neurogenesis multicellular organism development neuron differentiation positive regulation of neuron projection development cell differentiation positive regulation of cell projection organization system development regulation of cell projection organization nervous system development generation of neurons neuron development regulation of plasma membrane bounded cell projection organization cellular response to stimulus response to stimulus cardiac muscle contraction intracellular signal transduction cell communication intracellular signaling cassette signal transduction regulation of cardiac muscle contraction calcium-mediated signaling signaling regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion regulation of cardiac muscle contraction by calcium ion signaling muscle cell development muscle cell differentiation action potential cardiac muscle cell action potential regulation of membrane potential muscle cell cellular homeostasis cellular response to endogenous stimulus cellular response to growth factor stimulus regulation of response to stimulus response to endogenous stimulus regulation of cellular response to growth factor stimulus response to growth factor protein-containing complex organization protein-containing complex assembly regulation of voltage-gated calcium channel activity regulation of protein modification process regulation of protein phosphorylation negative regulation of phosphate metabolic process regulation of peptidyl-serine phosphorylation negative regulation of cellular metabolic process peptidyl-serine modification regulation of primary metabolic process peptidyl-serine phosphorylation regulation of phosphate metabolic process phosphate-containing compound metabolic process negative regulation of protein modification process peptidyl-amino acid modification protein metabolic process protein modification process phosphorus metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of peptidyl-serine phosphorylation protein phosphorylation phosphorylation regulation of protein metabolic process cellular metabolic process negative regulation of metabolic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process negative regulation of protein phosphorylation macromolecule modification negative regulation of phosphorus metabolic process regulation of phosphorylation regulation of phosphorus metabolic process macromolecule metabolic process negative regulation of phosphorylation regulation of metabolic process skeletal muscle organ development skeletal muscle tissue development muscle tissue development tissue development striated muscle tissue development regulation of developmental process regulation of cell differentiation positive regulation of neuron differentiation positive regulation of developmental process positive regulation of cell differentiation regulation of neuron differentiation negative regulation of peptidyl-cysteine S-nitrosylation peptidyl-cysteine modification peptidyl-cysteine S-nitrosylation regulation of peptidyl-cysteine S-nitrosylation protein nitrosylation synaptic signaling cell-cell signaling maintenance of blood-brain barrier multicellular organismal-level homeostasis anatomical structure homeostasis tissue homeostasis regulation of skeletal muscle contraction by regulation of release of sequestered calcium ion regulation of skeletal muscle contraction by calcium ion signaling response to mechanical stimulus response to abiotic stimulus response to external stimulus response to muscle stretch	cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane intracellular anatomical structure Z disc sarcomere intracellular organelle cell periphery postsynapse postsynaptic membrane synapse cell junction membrane plasma membrane plasma membrane region cellular anatomical entity synaptic membrane intracellular anatomical structure Z disc sarcomere intracellular organelle I band organelle intracellular non-membrane-bounded organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex non-membrane-bounded organelle cytosol sarcolemma costamere glycoprotein complex protein-containing complex syntrophin complex plasma membrane protein complex membrane protein complex dystrophin-associated glycoprotein complex anchoring junction cell-substrate junction cytoskeleton cell projection actin-based cell projection filopodium plasma membrane bounded cell projection cell surface membrane microdomain membrane raft neuron projection terminus neuron projection filopodium membrane cell projection membrane membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR043145	Zinc finger, ZZ-type superfamily	Homologous Superfamily
A, B, C, D	IPR015154	EF-hand domain, type 2	Domain
A, B, C, D	IPR036020	WW domain superfamily	Homologous Superfamily
A, B, C, D	IPR000433	Zinc finger, ZZ-type	Domain
A, B, C, D	IPR001589	Actinin-type actin-binding domain, conserved site	Conserved Site
A, B, C, D	IPR036872	CH domain superfamily	Homologous Superfamily
A, B, C, D	IPR050774	KCMF1 and Dystrophin	Family
A, B, C, D	IPR002017	Spectrin repeat	Repeat
A, B, C, D	IPR015153	EF-hand domain, type 1	Domain
A, B, C, D	IPR001715	Calponin homology domain	Domain
A, B, C, D	IPR011992	EF-hand domain pair	Homologous Superfamily
A, B, C, D	IPR035436	Dystrophin/utrophin	Family
A, B, C, D	IPR018159	Spectrin/alpha-actinin	Repeat
A, B, C, D	IPR001202	WW domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: P11532	Duchenne muscular dystrophy dilated cardiomyopathy Becker muscular dystrophy dilated cardiomyopathy 3B cardiomyopathy embryonal rhabdomyosarcoma gastrointestinal stromal tumor leiomyosarcoma status epilepticus muscular dystrophy polycystic ovary syndrome muscular dystrophy, non-human animal myxoid leiomyosarcoma Neoplasm Invasiveness calcinosis Duchenne muscular dystrophy dilated cardiomyopathy Becker muscular dystrophy dilated cardiomyopathy 3B cardiomyopathy embryonal rhabdomyosarcoma gastrointestinal stromal tumor leiomyosarcoma status epilepticus muscular dystrophy polycystic ovary syndrome muscular dystrophy, non-human animal myxoid leiomyosarcoma Neoplasm Invasiveness calcinosis epithelioid leiomyosarcoma X-linked recessive disease cystic fibrosis dilated cardiomyopathy 1A distal myopathy ductal breast carcinoma in situ adrenal cortex carcinoma endomyocardial fibrosis non-small cell lung carcinoma arthropathy familial isolated dilated cardiomyopathy pancreatic intraductal papillary-mucinous carcinoma hereditary spastic paraplegia large cell medulloblastoma psoriasis lung adenocarcinoma swine influenza colorectal cancer malignant ependymoma ulcerative colitis congenital muscular dystrophy medulloblastoma dermatomyositis Duchenne and Becker muscular dystrophy nasopharyngeal carcinoma amyotrophic lateral sclerosis ovarian cancer atypical teratoid rhabdoid tumor pancreatic intraductal papillary-mucinous neoplasm breast cancer intellectual disability pituitary cancer rhabdomyolysis lung cancer tuberculosis cutaneous lupus erythematosus myopathy endogenous depression arthrogryposis familial dilated cardiomyopathy pancreatic ductal adenocarcinoma B-cell chronic lymphocytic leukemia pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia breast carcinoma invasive ductal breast carcinoma limb-girdle muscular dystrophy Charcot-Marie-Tooth disease malignant colon neoplasm malignant pancreatic neoplasm

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.