3JAX

Heavy meromyosin from Schistosoma mansoni muscle thick filament by negative stain EM

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Myosin_N	e3jaxA1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: Myosin_N	ECOD (1.6)
A	KOG0161_1st	e3jaxA2	A: alpha bundles	X: Myosin VI lever arm (From Topology)	H: Myosin VI lever arm (From Topology)	T: Myosin VI lever arm	F: KOG0161_1st	ECOD (1.6)
A	Myosin_head	e3jaxA3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Myosin_head	ECOD (1.6)
B	Myosin_N	e3jaxB2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: Myosin_N	ECOD (1.6)
B	KOG0161_1st	e3jaxB1	A: alpha bundles	X: Myosin VI lever arm (From Topology)	H: Myosin VI lever arm (From Topology)	T: Myosin VI lever arm	F: KOG0161_1st	ECOD (1.6)
B	Myosin_head	e3jaxB3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: Myosin_head	ECOD (1.6)
E	EF-hand_7_8	e3jaxE1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
E	EF-hand_7_4	e3jaxE2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_4	ECOD (1.6)
F	EF-hand_7_8	e3jaxF1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
F	EF-hand_7_4	e3jaxF2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_4	ECOD (1.6)
C	EF-hand_7_8	e3jaxC1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
C	EF-hand_7_5	e3jaxC2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)
D	EF-hand_7_8	e3jaxD1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
D	EF-hand_7_5	e3jaxD2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00612	IQ calmodulin-binding motif (IQ)	IQ calmodulin-binding motif	-	Motif
A, B	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, B	PF00063	Myosin head (motor domain) (Myosin_head)	Myosin head (motor domain)	-	Domain
E, F	PF13833	EF-hand domain pair (EF-hand_8)	EF-hand domain pair	-	Domain
E, F	PF13405	EF-hand domain (EF-hand_6)	EF-hand domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	myosin 2 heavy chain	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 cytoskeletal motor activity microfilament motor activity ATP-dependent activity	cellular component organization organelle organization actomyosin structure organization actin cytoskeleton organization actin filament-based process cellular process cellular component organization or biogenesis 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 myosin filament supramolecular fiber supramolecular polymer 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 myosin filament supramolecular fiber supramolecular polymer supramolecular complex cytoplasm
E, F	myosin regulatory light chain	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding myosin heavy chain binding cytoskeletal protein binding protein binding myosin binding cytoskeletal motor regulator activity molecular function regulator activity	locomotion mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process cellular component organization organelle organization actomyosin structure organization actin cytoskeleton organization locomotion mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cellular process cytokinesis cell division cell cycle mitotic cell cycle cell cycle process cellular component organization organelle organization actomyosin structure organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization developmental process multicellular organism development multicellular organismal process anatomical structure development post-embryonic development	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 cytoplasm
C, D	smooth muscle myosin essential light chain	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding structural molecule activity structural constituent of muscle	-	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
A, B	IPR001609	Myosin head, motor domain	Domain
A, B	IPR004009	Myosin, N-terminal, SH3-like	Domain
A, B	IPR008989	Myosin S1 fragment, N-terminal	Homologous Superfamily
A, B	IPR000048	IQ motif, EF-hand binding site	Binding Site
A, B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
E, F	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
E, F	IPR050403	Myosin Regulatory Light Chain	Family
E, F	IPR002048	EF-hand domain	Domain
E, F	IPR011992	EF-hand domain pair	Homologous Superfamily
C, D	IPR050230	Calcium-Regulated Muscle Contraction and Cellular Process	Family
C, D	IPR002048	EF-hand domain	Domain
C, D	IPR011992	EF-hand domain pair	Homologous Superfamily

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.