6X5Z

Bovine Cardiac Myosin in Complex with Chicken Skeletal Actin and Human Cardiac Tropomyosin in the Rigor State

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	Actin-like ATPases	8043438	3000092	SCOP2B (2022-06-29)
A [auth B]	SCOP2B Superfamily	Actin-like ATPases	8043436	3000092	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	Actin-like ATPases	8043438	3000092	SCOP2B (2022-06-29)
E [auth A]	SCOP2B Superfamily	Actin-like ATPases	8043436	3000092	SCOP2B (2022-06-29)
G [auth C]	SCOP2B Superfamily	Actin-like ATPases	8043436	3000092	SCOP2B (2022-06-29)
G [auth C]	SCOP2B Superfamily	Actin-like ATPases	8043438	3000092	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 [auth B]	PF00022	e6x5zB2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PF00022	ECOD (1.6)
E [auth A]	PF00022	e6x5zA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PF00022	ECOD (1.6)
G [auth C]	PF00022	e6x5zC1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: PF00022	ECOD (1.6)
B [auth O]	PF00261	e6x5zO1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: PF00261	ECOD (1.6)
D [auth P]	PF00261	e6x5zP1	A: alpha bundles	X: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	H: Helical domain in structural maintenance of chromosomes protein 3 (From Topology)	T: Helical domain in structural maintenance of chromosomes protein 3	F: PF00261	ECOD (1.6)
F [auth D]	PF02736	e6x5zD1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
F [auth D]	PF00063	e6x5zD2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF00063	ECOD (1.6)
H [auth J]	PF02736	e6x5zJ2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
H [auth J]	PF00063	e6x5zJ1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF00063	ECOD (1.6)
C [auth G]	PF02736	e6x5zG2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
C [auth G]	PF00063	e6x5zG1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF00063	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A [auth B], E [auth A], G [auth C]	PF00022	Actin (Actin)	Actin	-	Family
B [auth O], D [auth P]	PF00261	Tropomyosin (Tropomyosin)	Tropomyosin	-	Coiled-coil
C [auth G], F [auth D], H [auth J]	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
C [auth G], F [auth D], H [auth J]	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
A [auth B], E [auth A], G [auth C]	Actin, alpha skeletal muscle	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding hydrolase activity catalytic activity	cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly skeletal myofibril assembly cell development muscle cell differentiation cellular component organization cellular component biogenesis muscle structure development striated muscle cell development cellular anatomical entity morphogenesis cellular component assembly muscle cell development cell differentiation actin filament-based process cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly skeletal myofibril assembly cell development muscle cell differentiation cellular component organization cellular component biogenesis muscle structure development striated muscle cell development cellular anatomical entity morphogenesis cellular component assembly muscle cell development cell differentiation actin filament-based process anatomical structure development cellular component organization or biogenesis developmental process skeletal muscle thin filament assembly actin cytoskeleton organization actomyosin structure organization organelle assembly actin filament organization anatomical structure morphogenesis organelle organization myofibril assembly anatomical structure formation involved in morphogenesis cellular process striated muscle cell differentiation supramolecular fiber organization cytoskeleton organization myotube cell development skeletal muscle fiber development skeletal muscle tissue development animal organ development tissue development myotube differentiation skeletal muscle organ development muscle tissue development muscle organ development	polymeric cytoskeletal fiber intracellular anatomical structure actin filament cellular anatomical entity actin cytoskeleton intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle supramolecular fiber supramolecular polymer supramolecular complex non-membrane-bounded organelle striated muscle thin filament polymeric cytoskeletal fiber intracellular anatomical structure actin filament cellular anatomical entity actin cytoskeleton intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle supramolecular fiber supramolecular polymer supramolecular complex non-membrane-bounded organelle striated muscle thin filament myofilament sarcomere contractile muscle fiber cytoplasm myofibril actin filament bundle actomyosin stress fiber contractile actin filament bundle
B [auth O], D [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 molecular function regulation of molecular function regulation of ATP-dependent activity positive regulation of ATP-dependent activity 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 actin filament bundle assembly regulation of actin cytoskeleton organization regulation of supramolecular fiber organization cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly cell development 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 cellular anatomical entity plasma membrane bounded cell projection cell periphery cell projection ruffle membrane plasma membrane region cell projection membrane intracellular organelle intracellular anatomical structure ruffle cell leading edge plasma membrane membrane leading edge membrane cellular anatomical entity plasma membrane bounded cell projection cell periphery cell projection ruffle membrane plasma membrane region cell projection membrane intracellular organelle intracellular anatomical structure cytoskeleton organelle intracellular non-membrane-bounded organelle actin cytoskeleton non-membrane-bounded organelle 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
C [auth G], F [auth D], H [auth J]	Myosin-7	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding actin filament binding calmodulin binding cytoskeletal motor activity microfilament motor activity ATP-dependent activity	heart process multicellular organismal process system process circulatory system process cardiac muscle contraction heart contraction muscle contraction muscle system process blood circulation striated muscle contraction developmental process heart development multicellular organism development anatomical structure development heart process multicellular organismal process system process circulatory system process cardiac muscle contraction heart contraction muscle contraction muscle system process blood circulation striated muscle contraction developmental process heart development multicellular organism development anatomical structure development animal organ development adult heart development circulatory system development system development muscle filament sliding actin filament-based process cellular process actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly cell development muscle cell differentiation cellular component organization cellular component biogenesis muscle structure development striated muscle cell development cellular anatomical entity morphogenesis cellular component assembly muscle cell development cell differentiation sarcomere organization cellular component organization or biogenesis actomyosin structure organization actin cytoskeleton organization organelle assembly anatomical structure morphogenesis myofibril assembly organelle organization anatomical structure formation involved in morphogenesis striated muscle cell differentiation supramolecular fiber organization cytoskeleton organization	protein-containing complex intracellular anatomical structure cellular anatomical entity actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle myosin II complex non-membrane-bounded organelle sarcomere contractile muscle fiber cytoplasm protein-containing complex intracellular anatomical structure cellular anatomical entity actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle myosin II complex non-membrane-bounded organelle sarcomere contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex myosin filament

InterPro: Protein Family Classification InterPro Database Homepage

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

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B [auth O], D [auth P]	Pharos: 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 breast cancer 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 breast cancer malignant mesothelioma myopathy ovarian cancer psoriasis Emery-Dreifuss muscular dystrophy exocrine pancreatic carcinoma familial isolated dilated cardiomyopathy glioblastoma large cell medulloblastoma atopic eczema breast fibroadenoma malignant pancreatic neoplasm neoplasm of esophagus cystic fibrosis pancreatic ductal adenocarcinoma familial dilated cardiomyopathy gastric cancer atypical teratoid rhabdoid tumor malignant colon neoplasm medulloblastoma Charcot-Marie-Tooth disease dermatomyositis pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia Duchenne muscular dystrophy

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 R01GM133198.