2W4H | pdb_00002w4h

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)
C [auth M]		e2w4hM1	A: Four-helical up-and-down bundle	X: Glycosyl hydrolase domain	H: Glycosyl hydrolase domain	T: Ribosomal_S27	F:	ECOD (20:10:01)
B [auth C]		e2w4hC3	A: Subtilisin-like	X: Subtilisin-like	H: Subtilisin-like	T: EF-hand_1, EF-hand_5, EF-hand_7	F:	ECOD (20:10:01)
A [auth B]		e2w4hB1	A: Alpha-beta plaits	X: Phage tail protein-like	H: Transmembrane protein 14A	T: SdrG_C_C	F:	ECOD (20:10:01)

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
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 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 actin binding protein-containing complex binding protein binding actin filament 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	multicellular organismal process system process muscle contraction muscle system process	protein-containing complex intracellular anatomical structure intracellular membraneless organelle actin cytoskeleton myosin complex intracellular organelle cellular anatomical structure cytoskeleton organelle membraneless organelle myosin II complex contractile muscle fiber cytoplasm supramolecular fiber protein-containing complex intracellular anatomical structure intracellular membraneless organelle actin cytoskeleton myosin complex intracellular organelle cellular anatomical structure cytoskeleton organelle membraneless organelle myosin II complex contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex myosin filament
B [auth C]	MYOSIN LIGHT CHAIN 3, SKELETAL MUSCLE ISOFORM	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	-	intracellular anatomical structure intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber supramolecular polymer supramolecular complex protein-containing complex actin cytoskeleton myosin complex intracellular anatomical structure intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber supramolecular polymer supramolecular complex protein-containing complex actin cytoskeleton myosin complex cytoskeleton myosin II complex
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 striated muscle tissue development	cellular anatomical structure intracellular anatomical structure cytoplasm intracellular organelle protein-containing complex cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton myosin complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth M]	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
C [auth M]	IPR004009	Myosin, SH3 domain	Domain
C [auth M]	IPR014751	DNA repair protein XRCC4-like, C-terminal	Homologous Superfamily
C [auth M]	IPR001609	Myosin head, motor domain-like	Domain
C [auth M]	IPR002928	Myosin tail	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
B [auth C]	IPR050230	Calmodulin/Myosin light chain/Troponin C-like	Family
B [auth C]	IPR002048	EF-hand domain	Domain
B [auth C]	IPR011992	EF-hand domain pair	Homologous Superfamily
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
A [auth B]	IPR050403	Myosin regulatory light chain	Family

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.