1BR2

SMOOTH MUSCLE MYOSIN MOTOR DOMAIN COMPLEXED WITH MGADP.ALF4

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1br2a1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
A	d1br2a2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d1br2b1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d1br2b2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d1br2c1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d1br2c2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d1br2d1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d1br2d2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
E	d1br2e1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
E	d1br2e2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
F	d1br2f1	All beta proteins	SH3-like barrel	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	Myosin S1 fragment, N-terminal domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
F	d1br2f2	Alpha and beta proteins (a/b)	P-loop containing nucleoside triphosphate hydrolases	P-loop containing nucleoside triphosphate hydrolases	Motor proteins	Myosin S1, motor domain	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Myosin s1 fragment N-terminal domain	8029257	4001735	SCOP2 (2022-06-29)
A	SCOP2 Family	Myosin motor domain	8031923	4004054	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	P-loop motor domain	8044301	3002036	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	P-loop motor domain	8044301	3002036	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	P-loop motor domain	8044301	3002036	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	P-loop motor domain	8044301	3002036	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	P-loop motor domain	8044301	3002036	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	P-loop motor domain	8044301	3002036	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8041636	3000319	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	PF02736	e1br2A2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
A	PF00063	e1br2A1	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)
B	PF02736	e1br2B2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
B	PF00063	e1br2B1	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	PF02736	e1br2C2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
C	PF00063	e1br2C1	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)
D	PF02736	e1br2D2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
D	PF00063	e1br2D1	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)
E	PF02736	e1br2E2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
E	PF00063	e1br2E1	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)
F	PF02736	e1br2F2	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02736	ECOD (1.6)
F	PF00063	e1br2F1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
A	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
A	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
A	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
B	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
B	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
B	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
C	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
C	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
C	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
C	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
D	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
D	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
D	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
D	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
E	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
E	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
E	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
E	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
F	3.40.850.10	Alpha Beta	3-Layer(aba) Sandwich	Kinesin	Kinesin motor domain	CATH (4.3.0)
F	1.10.10.820	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A		CATH (4.3.0)
F	1.20.120.720	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Myosin VI head, motor domain, U50 subdomain	CATH (4.3.0)
F	1.20.58.530	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	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, C, D, E A, B, C, D, E, F	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, B, C, D, E A, B, C, D, E, F	MYOSIN	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding structural molecule activity structural constituent of muscle myosin II binding myosin binding myosin light chain binding cation binding magnesium ion binding ion binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding structural molecule activity structural constituent of muscle myosin II binding myosin binding myosin light chain binding cation binding magnesium ion binding ion binding metal ion binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding ADP binding calmodulin binding cytoskeletal motor activity microfilament motor activity ATP-dependent activity	cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly cell development myosin filament assembly skeletal myofibril assembly 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 cellular developmental process cellular component assembly involved in morphogenesis non-membrane-bounded organelle assembly cell development myosin filament assembly skeletal myofibril assembly 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 anatomical structure development actin filament-based process protein-containing complex assembly cellular component organization or biogenesis skeletal muscle myosin thick filament assembly developmental process actomyosin structure organization actin cytoskeleton organization organelle assembly protein-containing complex organization myosin filament organization anatomical structure morphogenesis striated muscle myosin thick filament assembly myofibril assembly organelle organization anatomical structure formation involved in morphogenesis cellular process striated muscle cell differentiation supramolecular fiber organization cytoskeleton organization multicellular organismal process system process smooth muscle contraction muscle contraction muscle system process cardiac muscle cell development striated muscle tissue development multicellular organism development cardiac cell development muscle tissue development system development heart development cardiac muscle tissue development animal organ development cardiac muscle cell differentiation tissue development cardiocyte differentiation circulatory system development elastic fiber assembly extracellular matrix organization extracellular matrix assembly extracellular structure organization external encapsulating structure organization	protein-containing complex intracellular anatomical structure cellular anatomical entity actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle contractile muscle fiber myosin II complex cytoplasm supramolecular fiber muscle myosin complex protein-containing complex intracellular anatomical structure cellular anatomical entity actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle intracellular non-membrane-bounded organelle contractile muscle fiber myosin II complex cytoplasm supramolecular fiber muscle myosin complex supramolecular polymer supramolecular complex non-membrane-bounded organelle myosin filament myofibril

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR000048	IQ motif, EF-hand binding site	Binding Site
A, B, C, D, E A, B, C, D, E, F	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR014751	DNA repair protein XRCC4-like, C-terminal	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR001609	Myosin head, motor domain	Domain
A, B, C, D, E A, B, C, D, E, F	IPR002928	Myosin tail	Domain
A, B, C, D, E A, B, C, D, E, F	IPR004009	Myosin, N-terminal, SH3-like	Domain
A, B, C, D, E A, B, C, D, E, F	IPR008989	Myosin S1 fragment, N-terminal	Homologous Superfamily