Annotations: 1G8X

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1g8xa1	Designed proteins	Hybrid and chimeric proteins	Hybrid and chimeric proteins	Hybrid and chimeric proteins	Genetically engineered molecular motor	(Dictyostelium discoideum ) [TaxId: 44689 ], (Dictyostelium discoideum ) [TaxId: 44689 ],	SCOPe (2.08)
A	d1g8xa2	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Dictyostelium discoideum ) [TaxId: 44689 ], (Dictyostelium discoideum ) [TaxId: 44689 ],	SCOPe (2.08)
B	d1g8xb1	Designed proteins	Hybrid and chimeric proteins	Hybrid and chimeric proteins	Hybrid and chimeric proteins	Genetically engineered molecular motor	(Dictyostelium discoideum ) [TaxId: 44689 ], (Dictyostelium discoideum ) [TaxId: 44689 ],	SCOPe (2.08)
B	d1g8xb2	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Dictyostelium discoideum ) [TaxId: 44689 ], (Dictyostelium discoideum ) [TaxId: 44689 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8037432	3000319	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	P-loop motor domain	8037429	3002036	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Myosin s1 fragment N-terminal domain	8037432	3000319	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	P-loop motor domain	8037429	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)
A	Myosin_N	e1g8xA4	A: beta barrels	X: SH3	H: SH3	T: SH3	F: Myosin_N	ECOD (1.6)
A	Spectrin	e1g8xA6	A: alpha bundles	X: Spectrin repeat-like	H: Spectrin repeat (From Topology)	T: Spectrin repeat	F: Spectrin	ECOD (1.6)
A	Myosin_head	e1g8xA1	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	e1g8xB4	A: beta barrels	X: SH3	H: SH3	T: SH3	F: Myosin_N	ECOD (1.6)
B	Spectrin	e1g8xB6	A: alpha bundles	X: Spectrin repeat-like	H: Spectrin repeat (From Topology)	T: Spectrin repeat	F: Spectrin	ECOD (1.6)
B	Myosin_head	e1g8xB1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.30.360	Mainly Beta	Roll	SH3 type barrels.	Myosin S1 fragment, N-terminal	CATH (4.3.0)
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)
A	1.20.58.60	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	2.30.30.360	Mainly Beta	Roll	SH3 type barrels.	Myosin S1 fragment, N-terminal	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)
B	1.20.58.60	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	PF00435	Spectrin repeat (Spectrin)	Spectrin repeat	Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference [2]. The spectr ...	Spectrin repeat-domains are found in several proteins involved in cytoskeletal structure. These include spectrin, alpha-actinin and dystrophin. The sequence repeat used in this family is taken from the structural repeat in reference [2]. The spectrin domain- repeat forms a three helix bundle. The second helix is interrupted by proline in some sequences. The repeats are defined by a characteristic tryptophan (W) residue at position 17 in helix A and a leucine (L) at 2 residues from the carboxyl end of helix C. Although the domain occurs in multiple repeats along sequences, the domains are actually stable on their own - ie they act, biophysically, like domains rather than repeats that along function when aggregated.	Domain
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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	MYOSIN II HEAVY CHAIN FUSED TO ALPHA-ACTININ 3	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding actin filament binding protein-macromolecule adaptor activity molecular adaptor activity structural constituent of cytoskeleton cation binding ion binding binding calcium ion binding metal ion binding small molecule binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding actin filament binding protein-macromolecule adaptor activity molecular adaptor activity structural constituent of cytoskeleton structural molecule activity nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding cytoskeletal motor activity 14-3-3 protein binding adenyl ribonucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding anion binding ATP binding carbohydrate derivative binding ribonucleotide binding calmodulin binding identical protein binding calcium-dependent ATPase activity ATP-dependent activity microfilament motor activity	localization import into cell transport phagocytosis cellular process endocytosis establishment of localization vesicle-mediated transport cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization localization import into cell transport phagocytosis cellular process endocytosis establishment of localization vesicle-mediated transport cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization response to osmotic stress hyperosmotic response response to stimulus response to stress response to abiotic stimulus cellular response to stimulus cellular response to nutrient levels response to nutrient levels cellular response to stress response to starvation cellular response to starvation actin filament organization actin crosslink formation supramolecular fiber organization developmental process sorocarp development biological process involved in intraspecies interaction between organisms anatomical structure development socially cooperative development cell motility cellular component biogenesis cellular component assembly actin filament bundle organization actin filament bundle assembly plasma membrane bounded cell projection organization cell projection organization uropod organization uropod retraction protein localization cellular localization cellular macromolecule localization macromolecule localization aggregation involved in sorocarp development cellular component disassembly pseudopodium retraction pseudopodium organization actin-mediated cell contraction actin filament-based movement actin-myosin filament sliding chemotaxis taxis response to chemical response to external stimulus locomotion cortical actin cytoskeleton organization cortical cytoskeleton organization response to organic substance response to organonitrogen compound response to organophosphorus response to oxygen-containing compound response to nitrogen compound response to purine-containing compound response to cAMP response to organic cyclic compound response to ketone response to ether response to differentiation-inducing factor 1 protein-containing complex organization myosin filament assembly myosin filament organization protein-containing complex assembly response to hydrogen peroxide response to oxidative stress response to reactive oxygen species response to inorganic substance vesicle organization vacuole organization contractile vacuole organization culmination involved in sorocarp development cytoplasmic actin-based contraction involved in forward cell motility cytoplasmic actin-based contraction involved in cell motility mitotic cell cycle process cytoskeleton-dependent cytokinesis mitotic cytokinesis cytokinesis cell division cell cycle mitotic cell cycle cell cycle process bleb assembly plasma membrane bounded cell projection assembly cell projection assembly detection of external stimulus detection of stimulus detection of mechanical stimulus response to mechanical stimulus detection of abiotic stimulus contractile actin filament bundle assembly regulation of cytoskeleton organization regulation of cellular process regulation of cellular component organization regulation of actin filament-based process regulation of cellular component size negative regulation of biological process regulation of protein-containing complex assembly negative regulation of cellular process negative regulation of protein polymerization regulation of actin filament polymerization regulation of biological quality negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization protein polymerization actin polymerization or depolymerization regulation of biological process regulation of actin filament organization actin filament polymerization negative regulation of cellular component organization negative regulation of cytoskeleton organization biological regulation regulation of actin polymerization or depolymerization regulation of cellular component biogenesis regulation of organelle organization negative regulation of protein-containing complex assembly negative regulation of organelle organization regulation of protein polymerization regulation of actin filament length regulation of actin cytoskeleton organization regulation of supramolecular fiber organization regulation of anatomical structure size regulation of developmental process regulation of cell shape cell morphogenesis regulation of cell morphogenesis anatomical structure morphogenesis regulation of anatomical structure morphogenesis filopodium assembly hypotonic response	cell projection macropinocytic cup cellular anatomical entity plasma membrane bounded cell projection cell junction pseudopodium cell periphery cell cortex intracellular anatomical structure cytoplasm cytosol cell leading edge membrane-bounded organelle intracellular vesicle cell projection macropinocytic cup cellular anatomical entity plasma membrane bounded cell projection cell junction pseudopodium cell periphery cell cortex intracellular anatomical structure cytoplasm cytosol cell leading edge membrane-bounded organelle intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle organelle vesicle endocytic vesicle extracellular matrix external encapsulating structure vacuole contractile vacuole complex contractile vacuole intracellular non-membrane-bounded organelle non-membrane-bounded organelle cortical cytoskeleton actin cytoskeleton cytoskeleton cortical actin cytoskeleton polymeric cytoskeletal fiber actin filament supramolecular fiber supramolecular polymer supramolecular complex pathogen-containing vacuole host cellular component host cell part actomyosin contractile ring cell division site actomyosin contractile ring protein-containing complex myosin complex myosin II complex apical part of cell cell cortex region cytoplasmic region apical cortex cell trailing edge equatorial cell cortex myosin filament early phagosome cleavage furrow membrane plasma membrane plasma membrane region phagocytic cup base phagocytic cup uropod

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001715	Calponin homology domain	Domain
A, B	IPR014837	EF-hand, Ca insensitive	Domain
A, B	IPR002048	EF-hand domain	Domain
A, B	IPR011992	EF-hand domain pair	Homologous Superfamily
A, B	IPR018247	EF-Hand 1, calcium-binding site	Binding Site
A, B	IPR001589	Actinin-type actin-binding domain, conserved site	Conserved Site
A, B	IPR036872	CH domain superfamily	Homologous Superfamily
A, B	IPR018159	Spectrin/alpha-actinin	Repeat
A, B	IPR002017	Spectrin repeat	Repeat
A, B	IPR000048	IQ motif, EF-hand binding site	Binding Site
A, B	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A, B	IPR004009	Myosin, N-terminal, SH3-like	Domain
A, B	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
A, B	IPR001609	Myosin head, motor domain	Domain
A, B	IPR002928	Myosin tail	Domain
A, B	IPR008989	Myosin S1 fragment, N-terminal	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.