Annotations: 8EFI

Helical reconstruction of the human cardiac actin-tropomyosin-myosin complex in the rigor form

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)
H [auth P]	Cadherin	e8efiP1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
G [auth O]	Cadherin	e8efiO1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
F	Cadherin	e8efiF1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
E	Cadherin	e8efiE1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
D	Cadherin	e8efiD1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
C	Cadherin	e8efiC1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
B	Cadherin	e8efiB1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)
A [auth M]	Cadherin	e8efiM1	A: beta barrels	X: RNase A-like	H: Cytochrome P450	T: Cytochrome P450	F: Cadherin	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (utative)
E	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (utative)
D	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (utative)
C	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (utative)
B	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (utative)
A [auth M]	1.20.58.60	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
G [auth O], H [auth P]	PF00261	Tropomyosin (Tropomyosin)	Tropomyosin	-	Coiled-coil
A [auth M]	PF02736	Myosin N-terminal SH3-like domain (Myosin_N)	Myosin N-terminal SH3-like domain	This domain has an SH3-like fold. It is found at the N-terminus of many but not all myosins. The function of this domain is unknown.	Domain
A [auth M]	PF00063	Myosin head (motor domain) (Myosin_head)	Myosin head (motor domain)		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
G [auth O], H [auth P]	Tropomyosin alpha-1 chain	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding structural molecule activity structural constituent of muscle protein heterodimerization activity protein dimerization activity identical protein binding protein homodimerization activity structural constituent of cytoskeleton	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 heart contraction blood circulation regulation of muscle contraction muscle contraction 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 heart contraction blood circulation regulation of muscle contraction muscle contraction regulation of muscle system process muscle system process regulation of vascular associated smooth muscle cell migration negative regulation of locomotion vascular associated smooth muscle cell migration regulation of cell motility regulation of cellular process negative regulation of vascular associated smooth muscle cell migration regulation of smooth muscle cell migration negative regulation of biological process smooth muscle cell migration muscle cell migration negative regulation of smooth muscle cell migration regulation of locomotion regulation of cell migration negative regulation of cellular process negative regulation of cell motility cell migration cellular process cell motility locomotion negative regulation of cell migration muscle filament sliding actin filament-based process actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding developmental process regulation of developmental process regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis anatomical structure development regulation of biological quality regulation of anatomical structure morphogenesis cell adhesion positive regulation of cell adhesion regulation of cell adhesion positive regulation of biological process positive regulation of cellular process cellular component organization organelle organization cellular component organization or biogenesis cytoskeleton organization cellular response to stimulus response to stimulus cellular response to oxidative stress response to oxygen-containing compound cellular response to chemical stress cellular response to oxygen-containing compound response to reactive oxygen species cellular response to reactive oxygen species response to oxidative stress cellular response to chemical stimulus cellular response to stress response to stress response to chemical wound healing response to wounding plasma membrane bounded cell projection organization ruffle organization cell projection organization cardiac muscle contraction striated muscle contraction actin cytoskeleton organization actin filament organization supramolecular fiber organization ventricular cardiac muscle tissue morphogenesis heart morphogenesis striated muscle tissue development muscle structure development multicellular organism development ventricular cardiac muscle tissue development cardiac chamber development animal organ morphogenesis muscle tissue development muscle organ development system development heart development cardiac chamber morphogenesis cardiac muscle tissue development animal organ development tissue development muscle tissue morphogenesis circulatory system development tissue morphogenesis cardiac ventricle morphogenesis cardiac muscle tissue morphogenesis cardiac ventricle development muscle organ morphogenesis positive regulation of organelle organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process positive regulation of cellular component organization regulation of actin filament bundle assembly cellular component biogenesis cellular component assembly positive regulation of actin filament bundle assembly actin filament bundle organization positive regulation of stress fiber assembly stress fiber assembly regulation of actin filament organization actomyosin structure organization positive regulation of cellular component biogenesis positive regulation of cytoskeleton organization regulation of cellular component biogenesis positive regulation of supramolecular fiber organization regulation of organelle organization regulation of stress fiber assembly contractile actin filament bundle assembly regulation of actomyosin structure organization regulation of actin cytoskeleton organization actin filament bundle assembly regulation of supramolecular fiber organization cellular developmental process cellular component assembly involved in morphogenesis cell development membraneless organelle assembly muscle cell differentiation striated muscle cell development cellular anatomical entity morphogenesis muscle cell development cell differentiation sarcomere organization organelle assembly myofibril assembly anatomical structure formation involved in morphogenesis striated muscle cell differentiation regulation of vascular associated smooth muscle cell proliferation negative regulation of cell population proliferation cell population proliferation regulation of smooth muscle cell proliferation negative regulation of vascular associated smooth muscle cell proliferation smooth muscle cell proliferation negative regulation of smooth muscle cell proliferation regulation of cell population proliferation muscle cell proliferation vascular associated smooth muscle cell proliferation regulation of systemic arterial blood pressure mediated by a chemical signal positive regulation of blood pressure positive regulation of blood circulation regulation of systemic arterial blood pressure by norepinephrine-epinephrine positive regulation of blood pressure by epinephrine-norepinephrine regulation of heart rate regulation of heart rate by chemical signal regulation of blood pressure positive regulation of heart rate positive regulation of heart rate by epinephrine-norepinephrine positive regulation of heart contraction regulation of systemic arterial blood pressure positive regulation of heart rate by epinephrine positive regulation of multicellular organismal process	ruffle cell leading edge plasma membrane membrane leading edge membrane plasma membrane bounded cell projection cell periphery cell projection cellular anatomical structure ruffle membrane plasma membrane region cell projection membrane intracellular organelle intracellular anatomical structure ruffle cell leading edge plasma membrane membrane leading edge membrane plasma membrane bounded cell projection cell periphery cell projection cellular anatomical structure ruffle membrane plasma membrane region cell projection membrane intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton cytoplasm cytosol striated muscle thin filament protein-containing complex myofilament muscle thin filament tropomyosin sarcomere contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex bleb actin filament bundle actomyosin stress fiber contractile actin filament bundle polymeric cytoskeletal fiber actin filament
B, C, D, E, F	Actin, alpha cardiac muscle 1	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cytoskeletal protein binding protein binding myosin binding	actin filament-based process cellular process actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding heart process multicellular organismal process system process circulatory system process heart contraction blood circulation developmental process mesenchyme migration mesenchyme morphogenesis actin filament-based process cellular process actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding heart process multicellular organismal process system process circulatory system process heart contraction blood circulation developmental process mesenchyme migration mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis anatomical structure morphogenesis tissue migration anatomical structure development animal organ morphogenesis regulation of biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process cellular component organization organelle organization actin cytoskeleton organization actin filament organization cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization	cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure intracellular membraneless organelle sarcomere intracellular organelle organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber cell projection cellular anatomical structure cell leading edge plasma membrane bounded cell projection lamellipodium intracellular anatomical structure intracellular membraneless organelle sarcomere intracellular organelle organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex cytoskeleton actin cytoskeleton cytosol polymeric cytoskeletal fiber actin filament cell body actin-based cell projection filopodium
A [auth M]	Myosin-7	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding calmodulin binding polypeptide conformation or assembly isomerase activity isomerase activity cytoskeletal motor activity microfilament motor activity macromolecular conformation isomerase activity catalytic activity ATP-dependent activity	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 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 muscle contraction muscle system process striated muscle contraction nucleoside phosphate metabolic process ribose phosphate metabolic process purine nucleoside triphosphate metabolic process ATP metabolic process carbohydrate derivative metabolic process primary metabolic process nucleotide metabolic process purine-containing compound metabolic process nucleobase-containing compound metabolic process purine nucleotide metabolic process ribonucleotide metabolic process organophosphate metabolic process nucleobase-containing small molecule metabolic process purine ribonucleoside triphosphate metabolic process phosphate-containing compound metabolic process metabolic process cellular process small molecule metabolic process nucleoside triphosphate metabolic process purine ribonucleotide metabolic process phosphorus metabolic process regulation of the force of heart contraction regulation of muscle adaptation striated muscle adaptation response to stimulus transition between fast and slow fiber regulation of skeletal muscle adaptation regulation of muscle system process muscle adaptation regulation of response to stimulus skeletal muscle adaptation slow-twitch skeletal muscle fiber contraction twitch skeletal muscle contraction multicellular organismal movement musculoskeletal movement regulation of twitch skeletal muscle contraction regulation of skeletal muscle contraction regulation of slow-twitch skeletal muscle fiber contraction nervous system process neuromuscular process skeletal muscle contraction voluntary skeletal muscle contraction regulation of striated muscle contraction regulation of muscle contraction muscle filament sliding actin filament-based process actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding cardiac muscle contraction developmental process heart development multicellular organism development anatomical structure development animal organ development adult heart development circulatory system development system development ventricular cardiac muscle tissue morphogenesis heart morphogenesis striated muscle tissue development muscle structure development ventricular cardiac muscle tissue development cardiac chamber development animal organ morphogenesis muscle tissue development muscle organ development cardiac chamber morphogenesis cardiac muscle tissue development tissue development muscle tissue morphogenesis anatomical structure morphogenesis tissue morphogenesis cardiac ventricle morphogenesis cardiac muscle tissue morphogenesis cardiac ventricle development muscle organ morphogenesis regulation of the force of skeletal muscle contraction regulation of skeletal muscle contraction by chemo-mechanical energy conversion muscle hypertrophy striated muscle hypertrophy cardiac muscle adaptation response to stress cardiac muscle hypertrophy cardiac muscle hypertrophy in response to stress muscle hypertrophy in response to stress	intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer intracellular anatomical structure intracellular membraneless organelle Z disc sarcomere intracellular organelle I band cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex protein-containing complex actin cytoskeleton myosin complex cytoskeleton myosin II complex muscle myosin complex myosin filament actin filament bundle actomyosin stress fiber contractile actin filament bundle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
G [auth O], H [auth P]	IPR000533	Tropomyosin	Family
B, C, D, E, F	IPR020902	Actin/actin-like conserved site	Conserved Site
B, C, D, E, F	IPR004001	Actin, conserved site	Conserved Site
B, C, D, E, F	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
B, C, D, E, F	IPR004000	Actin family	Family
A [auth M]	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
A [auth M]	IPR001609	Myosin head, motor domain-like	Domain
A [auth M]	IPR000048	IQ motif, EF-hand binding site	Binding Site
A [auth M]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A [auth M]	IPR004009	Myosin, SH3 domain	Domain
A [auth M]	IPR014751	DNA repair protein XRCC4-like, C-terminal	Homologous Superfamily
A [auth M]	IPR002928	Myosin tail	Domain
A [auth M]	IPR008989	Myosin S1 fragment, N-terminal	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
G [auth O], H [auth P]	: P09493	hypertrophic cardiomyopathy 3 left ventricular noncompaction hypertrophic cardiomyopathy dilated cardiomyopathy dilated cardiomyopathy 1Y esophageal squamous cell carcinoma keloid Liver Cirrhosis, Experimental esophageal cancer hypertensive disorder cardiomyopathy familial hypertrophic cardiomyopathy gastric carcinoma acute myeloid leukemia malignant mesothelioma hypertrophic cardiomyopathy 3 left ventricular noncompaction hypertrophic cardiomyopathy dilated cardiomyopathy dilated cardiomyopathy 1Y esophageal squamous cell carcinoma keloid Liver Cirrhosis, Experimental esophageal cancer hypertensive disorder cardiomyopathy familial hypertrophic cardiomyopathy gastric carcinoma acute myeloid leukemia malignant mesothelioma breast cancer myopathy ovarian cancer psoriasis Emery-Dreifuss muscular dystrophy exocrine pancreatic carcinoma familial isolated dilated cardiomyopathy glioblastoma large cell medulloblastoma atopic eczema malignant pancreatic neoplasm breast fibroadenoma neoplasm of esophagus pancreatic ductal adenocarcinoma cystic fibrosis familial dilated cardiomyopathy gastric cancer malignant colon neoplasm atypical teratoid rhabdoid tumor medulloblastoma Charcot-Marie-Tooth disease pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia dermatomyositis Duchenne muscular dystrophy
A [auth M]	: P12883	myopathy, myosin storage, autosomal dominant dilated cardiomyopathy myopathy, myosin storage, autosomal recessive hypertrophic cardiomyopathy left ventricular noncompaction congenital fiber-type disproportion myopathy dilated cardiomyopathy 1S MYH7-related skeletal myopathy distal myopathy Ebstein anomaly hypertrophic cardiomyopathy 1 cardiomyopathy myocardial infarction tibial muscular dystrophy congenital structural myopathy myopathy, myosin storage, autosomal dominant dilated cardiomyopathy myopathy, myosin storage, autosomal recessive hypertrophic cardiomyopathy left ventricular noncompaction congenital fiber-type disproportion myopathy dilated cardiomyopathy 1S MYH7-related skeletal myopathy distal myopathy Ebstein anomaly hypertrophic cardiomyopathy 1 cardiomyopathy myocardial infarction tibial muscular dystrophy congenital structural myopathy atrial fibrillation MYH7-related late-onset scapuloperoneal muscular dystrophy centronuclear myopathy coronary stenosis familial dilated cardiomyopathy heart disease arthrogryposis LEFT VENTRICULAR NONCOMPACTION 5 autosomal dominant centronuclear myopathy Charcot-Marie-Tooth disease scapuloperoneal myopathy familial hypertrophic cardiomyopathy hyaline body myopathy malignant ependymoma psoriasis X-linked centronuclear myopathy dilated cardiomyopathy 1A familial isolated dilated cardiomyopathy autosomal recessive centronuclear myopathy myopathy myotonia congenita restrictive cardiomyopathy tubular aggregate myopathy X-linked Emery-Dreifuss muscular dystrophy

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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.