Annotations: 1N2D

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1n2da_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Light Chain Mlc1p	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)
B	d1n2db_	All alpha proteins	EF Hand-like	EF-hand	Calmodulin-like	Myosin Light Chain Mlc1p	baker's yeast (Saccharomyces cerevisiae ) [TaxId: 4932 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Calmodulin-like	8024226	4000924	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	EF-hand	8036605	3001983	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	EF-hand	8036605	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	EF-hand_7_8	e1n2dA2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
A	EF-hand_7_4	e1n2dA1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_4	ECOD (1.6)
B	EF-hand_7_8	e1n2dB2	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_8	ECOD (1.6)
B	EF-hand_7_4	e1n2dB1	A: alpha arrays	X: EF-hand	H: EF-hand-related	T: EF-hand	F: EF-hand_7_4	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)
B	1.10.238.10	Mainly Alpha	Orthogonal Bundle	Recoverin	domain 1	CATH (4.3.0)
C	1.20.5.190	Mainly Alpha	Up-down Bundle	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Myosin Light Chain	cation binding ion binding binding calcium ion binding metal ion binding small molecule binding myosin heavy chain binding cytoskeletal protein binding myosin II heavy chain binding protein binding myosin II binding myosin binding myosin V binding identical protein binding	regulation of cytokinesis regulation of biological process regulation of cellular process regulation of cell cycle process biological regulation cytokinesis regulation of cell division cellular process cell division cell cycle regulation of cell cycle cell cycle process cytoskeleton-dependent cytokinesis regulation of actomyosin contractile ring contraction regulation of cytokinesis regulation of biological process regulation of cellular process regulation of cell cycle process biological regulation cytokinesis regulation of cell division cellular process cell division cell cycle regulation of cell cycle cell cycle process cytoskeleton-dependent cytokinesis regulation of actomyosin contractile ring contraction cellular component organization contractile ring contraction cortical actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis actin cytoskeleton organization actomyosin structure organization cortical cytoskeleton organization regulation of cytokinetic process organelle organization cytokinetic process actomyosin contractile ring contraction actomyosin contractile ring organization cytoskeleton organization assembly of actomyosin apparatus involved in cytokinesis mitotic actomyosin contractile ring assembly mitotic cytokinetic process actomyosin contractile ring assembly mitotic cytokinesis mitotic cell cycle cellular component biogenesis cellular component assembly assembly of actomyosin apparatus involved in mitotic cytokinesis mitotic cell cycle process septum digestion after cytokinesis vesicle transport along actin filament vesicle cytoskeletal trafficking vesicle localization establishment of organelle localization cellular localization transport establishment of vesicle localization intracellular transport actin filament-based movement establishment of localization localization organelle localization establishment of localization in cell cytoskeleton-dependent intracellular transport actin filament-based transport vesicle targeting vesicle-mediated transport protein localization protein localization to cell division site protein localization to cell division site involved in cytokinesis, actomyosin contractile ring assembly cellular macromolecule localization protein localization to cell division site involved in mitotic actomyosin contractile ring assembly macromolecule localization regulation of cell wall organization or biogenesis cell wall organization or biogenesis	protein-containing complex cellular anatomical structure MIH complex cellular bud neck cellular bud site of polarized growth intracellular anatomical structure intracellular membraneless organelle actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle membraneless organelle protein-containing complex cellular anatomical structure MIH complex cellular bud neck cellular bud site of polarized growth intracellular anatomical structure intracellular membraneless organelle actin cytoskeleton myosin complex intracellular organelle cytoskeleton organelle membraneless organelle myosin II complex cellular bud tip membrane-bounded organelle vesicle contractile ring cell division site cell cortex cortical cytoskeleton cellular bud neck contractile ring actomyosin contractile ring mitotic actomyosin contractile ring cell periphery cortical actin cytoskeleton cytoplasm plasma membrane membrane myosin V complex unconventional myosin complex
C	IQ2 AND IQ3 MOTIFS FROM MYO2P, A CLASS V MYOSIN	small GTPase binding protein binding binding enzyme binding GTPase binding cytoskeletal protein binding actin binding protein-containing complex binding actin filament binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding small GTPase binding protein binding binding enzyme binding GTPase binding cytoskeletal protein binding actin binding protein-containing complex binding actin filament 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 calmodulin binding cytoskeletal motor activity microfilament motor activity ATP-dependent activity	cellular component organization mitochondrion distribution localization mitochondrion localization organelle organization organelle localization organelle inheritance mitochondrion inheritance cellular process cellular component organization or biogenesis intracellular distribution of mitochondria protein localization establishment of protein localization cellular localization cellular component organization mitochondrion distribution localization mitochondrion localization organelle organization organelle localization organelle inheritance mitochondrion inheritance cellular process cellular component organization or biogenesis intracellular distribution of mitochondria protein localization establishment of protein localization cellular localization nitrogen compound transport transport establishment of localization protein transport cellular macromolecule localization macromolecule localization secretion export from cell membrane docking vesicle-mediated transport organelle localization by membrane tethering secretion by cell exocytosis vesicle docking exocytic process vesicle docking involved in exocytosis vacuole organization vacuole inheritance membrane organization cytokinetic process cell cycle cytokinesis cell division membrane addition at site of cytokinesis cell cycle process establishment of organelle localization microtubule cytoskeleton organization spindle localization establishment or maintenance of cell polarity mitotic cell cycle establishment of mitotic spindle localization establishment of spindle localization establishment of spindle orientation establishment of localization in cell microtubule cytoskeleton organization involved in mitosis establishment of cell polarity mitotic cell cycle process establishment of mitotic spindle orientation microtubule-based process cytoskeleton organization Golgi inheritance Golgi organization endomembrane system organization peroxisome organization peroxisome inheritance vesicle transport along actin filament vesicle cytoskeletal trafficking vesicle localization establishment of vesicle localization intracellular transport actin filament-based movement actin filament-based process cytoskeleton-dependent intracellular transport actin filament-based transport actin cytoskeleton organization actin filament organization supramolecular fiber organization	cellular anatomical structure incipient cellular bud site site of polarized growth membrane cellular bud cellular bud tip membrane-bounded organelle organelle vesicle intracellular organelle intracellular anatomical structure cytoskeleton membraneless organelle intracellular membraneless organelle cellular anatomical structure incipient cellular bud site site of polarized growth membrane cellular bud cellular bud tip membrane-bounded organelle organelle vesicle intracellular organelle intracellular anatomical structure cytoskeleton membraneless organelle intracellular membraneless organelle actin cytoskeleton cell projection mating projection cell tip mating projection tip cell pole plasma membrane bounded cell projection transport vesicle intracellular vesicle intracellular membrane-bounded organelle endomembrane system cytoplasmic vesicle cytoplasm protein-containing complex myosin complex myosin V complex unconventional myosin complex actin filament bundle vacuolar membrane storage vacuole lytic vacuole vacuole fungal-type vacuole lytic vacuole membrane bounding membrane of organelle organelle membrane fungal-type vacuole membrane nucleus membrane protein complex nuclear protein-containing complex nuclear membrane protein complex organelle envelope microtubule organizing center attachment site nuclear membrane microtubule tethering complex nuclear envelope meiotic nuclear membrane microtubule tethering complex polymeric cytoskeletal fiber actin filament filamentous actin supramolecular fiber supramolecular polymer supramolecular complex Myo2p-Vac17p-Vac8p transport complex cellular bud neck

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050230	Calmodulin/Myosin light chain/Troponin C-like	Family
A, B	IPR002048	EF-hand domain	Domain
A, B	IPR011992	EF-hand domain pair	Homologous Superfamily
C	IPR036961	Kinesin motor domain superfamily	Homologous Superfamily
C	IPR001609	Myosin head, motor domain-like	Domain
C	IPR002710	Dilute domain	Domain
C	IPR000048	IQ motif, EF-hand binding site	Binding Site
C	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C	IPR036103	Class V myosin, motor domain	Domain
C	IPR046943	Myosin 2/2A, cargo-binding domain, fungi	Domain
C	IPR004009	Myosin, N-terminal, SH3-like	Domain

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.