2W4H

Isometrically contracting insect asynchronous flight muscle quick frozen after a quick release step

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A [auth B]	SCOP2B Superfamily	EF-hand	8062903	3001983	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]	EF-hand_7_8	e2w4hB2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
A [auth B]	EF-hand_7_4	e2w4hB1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_4	ECOD (1.6)
B [auth C]	EF-hand_7_8	e2w4hC4	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
B [auth C]	EF-hand_7_5	e2w4hC3	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_5	ECOD (1.6)
C [auth M]	Myosin_N	e2w4hM1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: Myosin_N	ECOD (1.6)
C [auth M]	KOG0161_1st	e2w4hM2	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)
C [auth M]	Myosin_head	e2w4hM3	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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [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
C [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
A [auth B]	MYOSIN REGULATORY LIGHT CHAIN 2, SKELETAL MUSCLE ISOFORM	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	multicellular organismal process system process muscle contraction muscle system process developmental process muscle structure development skeletal muscle organ development skeletal muscle tissue development anatomical structure development animal organ development muscle tissue development muscle organ development tissue development	intracellular anatomical structure cytoplasm cellular anatomical entity intracellular organelle protein-containing complex cytoskeleton organelle intracellular non-membrane-bounded organelle actin cytoskeleton non-membrane-bounded organelle myosin complex
B [auth C]	MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	-	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 contractile muscle fiber cytoplasm supramolecular fiber 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 contractile muscle fiber cytoplasm supramolecular fiber supramolecular polymer supramolecular complex
C [auth M]	MYOSIN HEAVY CHAIN, SKELETAL MUSCLE, ADULT	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	multicellular organismal process system process muscle contraction muscle system process	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 contractile muscle fiber cytoplasm supramolecular fiber 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 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]	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A [auth B]	IPR002048	EF-hand domain	Domain
A [auth B]	IPR011992	EF-hand domain pair	Homologous Superfamily
B [auth C]	IPR002048	EF-hand domain	Domain
B [auth C]	IPR011992	EF-hand domain pair	Homologous Superfamily
C [auth M]	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
C [auth M]	IPR014751	DNA repair protein XRCC4-like, C-terminal	Homologous Superfamily
C [auth M]	IPR001609	Myosin head, motor domain	Domain
C [auth M]	IPR002928	Myosin tail	Domain
C [auth M]	IPR004009	Myosin, N-terminal, SH3-like	Domain
C [auth M]	IPR008989	Myosin S1 fragment, N-terminal	Homologous Superfamily
C [auth M]	IPR000048	IQ motif, EF-hand binding site	Binding Site
C [auth M]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.