Annotations: 1DFL

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C [auth Z]	d1dflz_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Regulatory Chain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
F [auth X]	d1dflx_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Regulatory Chain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
E [auth W]	d1dflw_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Essential Chain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
B [auth Y]	d1dfly_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Essential Chain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
D [auth B]	d1dflb1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
D [auth B]	d1dflb2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
A	d1dfla1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)
A	d1dfla2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	(Argopecten irradians ) [TaxId: 31199 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C [auth Z]	SCOP2B Superfamily	EF-hand	8037362	3001983	SCOP2B (2022-06-29)
F [auth X]	SCOP2B Superfamily	EF-hand	8037362	3001983	SCOP2B (2022-06-29)
E [auth W]	SCOP2B Superfamily	EF-hand	8037349	3001983	SCOP2B (2022-06-29)
B [auth Y]	SCOP2B Superfamily	EF-hand	8037349	3001983	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	P-loop motor domain	8042777	3002036	SCOP2B (2022-06-29)
D [auth B]	SCOP2B Superfamily	Myosin s1 fragment, N-terminal domain	8042775	3000319	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Myosin s1 fragment, N-terminal domain	8042775	3000319	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	P-loop motor domain	8042777	3002036	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 Z]	EF-hand_1, EF-hand_6, EF-hand_7	e1dflZ3	A: a/b three-layered sandwiches	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: EF-hand_1, EF-hand_6, EF-hand_7	ECOD (v294.1)
F [auth X]	EF-hand_1, EF-hand_6, EF-hand_7	e1dflX3	A: a/b three-layered sandwiches	X: Fusion glycoprotein F2	H: RIFT-related	T: double psi	F: EF-hand_1, EF-hand_6, EF-hand_7	ECOD (v294.1)
E [auth W]	Pyr_redox_2	e1dflW1	A: a/b three-layered sandwiches	X: UBC-like	H: UBC-like	T: Concanavalin A-like lectins/glucanases	F: Pyr_redox_2	ECOD (v294.1)
B [auth Y]	Pyr_redox_2	e1dflY1	A: a/b three-layered sandwiches	X: UBC-like	H: UBC-like	T: Concanavalin A-like lectins/glucanases	F: Pyr_redox_2	ECOD (v294.1)
D [auth B]		e1dflB1	A: a/b three-layered sandwiches	X: Anticodon-binding domain of Class II aaRS	H: Anticodon-binding domain of Class II aaRS	T: Anticodon-binding domain of Class II aaRS	F:	ECOD (v294.1)
D [auth B]	Lactamase_B	e1dflB2	A: a/b three-layered sandwiches	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: Lactamase_B	ECOD (v294.1)
A		e1dflA3	A: a/b three-layered sandwiches	X: Anticodon-binding domain of Class II aaRS	H: Anticodon-binding domain of Class II aaRS	T: Anticodon-binding domain of Class II aaRS	F:	ECOD (v294.1)
A	Lactamase_B	e1dflA1	A: a/b three-layered sandwiches	X: amino-terminal domain of OmpATb	H: amino-terminal domain of OmpATb	T: amino-terminal domain of OmpATb	F: Lactamase_B	ECOD (v294.1)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth Z], F [auth X]	MYOSIN HEAD	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	-	protein-containing complex intracellular anatomical structure intracellular membraneless organelle actin cytoskeleton myosin complex intracellular organelle cellular anatomical structure cytoskeleton organelle membraneless organelle contractile muscle fiber myosin II complex 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 contractile muscle fiber myosin II complex cytoplasm supramolecular fiber muscle myosin complex supramolecular polymer supramolecular complex
B [auth Y], E [auth W]	MYOSIN HEAD	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding	-	intracellular organelle protein-containing complex cellular anatomical structure intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton myosin complex
A, D [auth B]	MYOSIN HEAD	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 structural molecule activity structural constituent of muscle 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	locomotion cellular component organization organelle organization actin cytoskeleton organization actin filament-based process myosin filament organization cellular process cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization multicellular organismal process system process muscle contraction muscle system process locomotion cellular component organization organelle organization actin cytoskeleton organization actin filament-based process myosin filament organization cellular process cellular component organization or biogenesis supramolecular fiber organization cytoskeleton organization multicellular organismal process system process muscle contraction muscle system process cellular developmental process cellular component assembly involved in morphogenesis cell development membraneless organelle assembly muscle cell differentiation cellular component biogenesis muscle structure development striated muscle cell development cellular anatomical entity morphogenesis cellular component assembly muscle cell development cell differentiation anatomical structure development developmental process actomyosin structure organization organelle assembly anatomical structure morphogenesis myofibril assembly anatomical structure formation involved in morphogenesis striated muscle cell differentiation	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth Z], F [auth X]	IPR050230	Calmodulin/Myosin light chain/Troponin C-like	Family
C [auth Z], F [auth X]	IPR002048	EF-hand domain	Domain
C [auth Z], F [auth X]	IPR011992	EF-hand domain pair	Homologous Superfamily
B [auth Y], E [auth W]	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
B [auth Y], E [auth W]	IPR002048	EF-hand domain	Domain
B [auth Y], E [auth W]	IPR011992	EF-hand domain pair	Homologous Superfamily
B [auth Y], E [auth W]	IPR050403	Myosin regulatory light chain	Family
A, D [auth B]	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
A, D [auth B]	IPR004009	Myosin, SH3 domain	Domain
A, D [auth B]	IPR014751	DNA repair protein XRCC4-like, C-terminal	Homologous Superfamily
A, D [auth B]	IPR001609	Myosin head, motor domain-like	Domain
A, D [auth B]	IPR002928	Myosin tail	Domain
A, D [auth B]	IPR008989	Myosin S1 fragment, N-terminal	Homologous Superfamily
A, D [auth B]	IPR000048	IQ motif, EF-hand binding site	Binding Site
A, D [auth B]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	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 R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.