Annotations: 2V51

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B [auth D]	SCOP2B Superfamily	Actin-like ATPases	8040506	3000092	SCOP2B (2022-06-29)
B [auth D]	SCOP2B Superfamily	Actin-like ATPases	8040509	3000092	SCOP2B (2022-06-29)
A [auth B]	SCOP2B Superfamily	Actin-like ATPases	8040506	3000092	SCOP2B (2022-06-29)
A [auth B]	SCOP2B Superfamily	Actin-like ATPases	8040509	3000092	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)
B [auth D]		e2v51D3	A: Subtilisin-like	X: Subtilisin-like	H: Subtilisin-like	T: Phenol_Hydrox	F:	ECOD (20:10:01)
A [auth B]		e2v51B3	A: Subtilisin-like	X: Subtilisin-like	H: Subtilisin-like	T: Phenol_Hydrox	F:	ECOD (20:10:01)
C [auth E]		e2v51E01	A: Rossmann-like	X: Rossmann-related	H: FAD/NAD(P)-binding domain	T: Peptidase_C11	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B [auth D]	3.30.420.40	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
B [auth D]	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (4.3.0)
A [auth B]	3.30.420.40	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
A [auth B]	3.90.640.10	Alpha Beta	Alpha-Beta Complex	Actin	Chain A, domain 4	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth E], D [auth F]	PF02755	RPEL repeat (RPEL)	RPEL repeat	-	Disordered

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth B], B [auth D]	ACTIN, ALPHA SKELETAL MUSCLE	cytoskeletal protein binding titin binding protein binding binding cation binding ion binding calcium ion binding metal ion binding small molecule binding protein domain specific binding hydrolase activity catalytic activity troponin I binding cytoskeletal motor activator activity cytoskeletal protein binding titin binding protein binding binding cation binding ion binding calcium ion binding metal ion binding small molecule binding protein domain specific binding hydrolase activity catalytic activity troponin I binding cytoskeletal motor activator activity cytoskeletal motor regulator activity molecular function activator activity molecular function regulator activity magnesium ion binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding myosin heavy chain binding myosin binding tropomyosin binding calcium-dependent protein binding identical protein binding actin monomer binding actin binding	developmental process mesenchyme migration multicellular organismal process mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis anatomical structure morphogenesis tissue migration anatomical structure development animal organ morphogenesis myotube cell development skeletal muscle fiber development developmental process mesenchyme migration multicellular organismal process mesenchyme morphogenesis animal organ development mesenchyme development tissue development tissue morphogenesis anatomical structure morphogenesis tissue migration anatomical structure development animal organ morphogenesis myotube cell development skeletal muscle fiber development cellular developmental process skeletal muscle tissue development cell development muscle cell differentiation myotube differentiation striated muscle tissue development muscle structure development skeletal muscle organ development striated muscle cell development muscle cell development cell differentiation cellular process muscle tissue development muscle organ development striated muscle cell differentiation regulation of biosynthetic process regulation of biological process regulation of cellular process biological regulation positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process cellular component assembly involved in morphogenesis skeletal myofibril assembly membraneless organelle assembly cellular component organization cellular component biogenesis cellular anatomical entity morphogenesis cellular component assembly actin filament-based process cellular component organization or biogenesis skeletal muscle thin filament assembly actin cytoskeleton organization actomyosin structure organization organelle assembly actin filament organization organelle organization myofibril assembly anatomical structure formation involved in morphogenesis supramolecular fiber organization cytoskeleton organization protein polymerization actin polymerization or depolymerization actin filament polymerization protein-containing complex organization protein-containing complex assembly actin filament bundle organization actin filament bundle assembly	intracellular anatomical structure skeletal muscle myofibril intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex cell projection intracellular anatomical structure skeletal muscle myofibril intracellular membraneless organelle intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex cell projection cell leading edge plasma membrane bounded cell projection lamellipodium cytoskeleton actin filament bundle actin cytoskeleton actomyosin stress fiber contractile actin filament bundle polymeric cytoskeletal fiber actin filament protein-containing complex filamentous actin cell body striated muscle thin filament myofilament sarcomere actin-based cell projection filopodium
C [auth E], D [auth F]	MKL/MYOCARDIN-LIKE PROTEIN 1	DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity DNA-binding transcription factor activity DNA binding sequence-specific DNA binding sequence-specific double-stranded DNA binding transcription cis-regulatory region binding binding double-stranded DNA binding nucleic acid binding transcription regulatory region nucleic acid binding transcription coactivator activity transcription regulator activity transcription coregulator activity protein-macromolecule adaptor activity molecular adaptor activity DNA-binding transcription factor activity cytoskeletal protein binding actin binding protein binding LRR domain binding protein domain specific binding leucine zipper domain binding actin monomer binding	positive regulation of locomotion regulation of biological process regulation of cell motility regulation of cellular process regulation of fibroblast migration positive regulation of fibroblast migration biological regulation positive regulation of biological process fibroblast migration positive regulation of cell migration hepatic stellate cell migration regulation of hepatic stellate cell migration regulation of locomotion ameboidal-type cell migration positive regulation of cell motility positive regulation of locomotion regulation of biological process regulation of cell motility regulation of cellular process regulation of fibroblast migration positive regulation of fibroblast migration biological regulation positive regulation of biological process fibroblast migration positive regulation of cell migration hepatic stellate cell migration regulation of hepatic stellate cell migration regulation of locomotion ameboidal-type cell migration positive regulation of cell motility regulation of cell migration positive regulation of hepatic stellate cell migration cell migration cellular process cell motility locomotion positive regulation of cellular process cellular response to endogenous stimulus cellular response to growth factor stimulus response to stimulus response to transforming growth factor beta cellular response to transforming growth factor beta stimulus response to endogenous stimulus response to growth factor fibroblast proliferation cell population proliferation positive regulation of cell population proliferation regulation of hepatic stellate cell proliferation regulation of fibroblast proliferation positive regulation of hepatic stellate cell proliferation regulation of cell population proliferation positive regulation of fibroblast proliferation hepatic stellate cell proliferation cellular response to stimulus response to lipid response to oxygen-containing compound cellular response to oxygen-containing compound response to retinoic acid cellular response to chemical stimulus cellular response to retinoic acid response to chemical cellular response to lipid cellular component organization organelle organization actin cytoskeleton organization actin filament-based process cellular component organization or biogenesis cytoskeleton organization neuron apoptotic process negative regulation of neuron apoptotic process negative regulation of programmed cell death regulation of apoptotic process negative regulation of biological process regulation of programmed cell death cell death negative regulation of apoptotic process negative regulation of cellular process apoptotic process programmed cell death regulation of neuron apoptotic process positive regulation of DNA-templated transcription RNA metabolic process positive regulation of miRNA transcription positive regulation of miRNA metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process DNA-templated transcription nucleic acid biosynthetic process positive regulation of metabolic process regulation of RNA metabolic process miRNA transcription positive regulation of biosynthetic process regulation of miRNA metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process miRNA metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process regulation of miRNA transcription multicellular organismal process cell activation regulation of cell activation positive regulation of hepatic stellate cell activation fibroblast activation regulation of hepatic stellate cell activation positive regulation of cell activation hepatic stellate cell activation positive regulation of multicellular organismal process regulation of multicellular organismal process response to nitrogen compound response to amyloid-beta negative regulation of signaling signaling regulation of signal transduction negative regulation of cell communication cell communication negative regulation of apoptotic signaling pathway signal transduction regulation of signaling negative regulation of response to stimulus negative regulation of signal transduction apoptotic signaling pathway regulation of response to stimulus regulation of cell communication regulation of apoptotic signaling pathway developmental process head development forebrain development animal organ development brain development nervous system development multicellular organism development central nervous system development anatomical structure development system development cellular developmental process regulation of developmental process regulation of cell differentiation positive regulation of neuron differentiation positive regulation of developmental process neurogenesis neuron differentiation positive regulation of cell differentiation cell differentiation generation of neurons regulation of neuron differentiation positive regulation of organelle organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process positive regulation of cellular component organization regulation of cellular component size cellular component biogenesis regulation of protein-containing complex assembly positive regulation of protein-containing complex assembly cellular component assembly positive regulation of protein polymerization protein-containing complex assembly regulation of actin filament polymerization regulation of biological quality protein polymerization actin polymerization or depolymerization regulation of actin filament organization actin filament polymerization protein-containing complex organization positive regulation of cellular component biogenesis positive regulation of cytoskeleton organization regulation of actin polymerization or depolymerization actin filament organization regulation of cellular component biogenesis positive regulation of supramolecular fiber organization regulation of organelle organization regulation of protein polymerization regulation of actin filament length regulation of actin cytoskeleton organization regulation of supramolecular fiber organization supramolecular fiber organization positive regulation of actin filament polymerization regulation of anatomical structure size endothelium development epithelial cell differentiation regulation of epithelial cell differentiation positive regulation of endothelial cell differentiation epithelium development regulation of multicellular organismal development endothelial cell differentiation regulation of endothelial cell differentiation positive regulation of epithelial cell differentiation tissue development muscle structure development smooth muscle cell differentiation muscle cell differentiation muscle hypertrophy regulation of muscle adaptation system process positive regulation of cardiac muscle hypertrophy regulation of system process striated muscle hypertrophy regulation of muscle system process muscle system process regulation of cardiac muscle hypertrophy regulation of muscle hypertrophy muscle adaptation positive regulation of muscle hypertrophy cardiac muscle hypertrophy negative regulation of cardiac muscle cell apoptotic process muscle cell apoptotic process regulation of cardiac muscle cell apoptotic process regulation of muscle cell apoptotic process cardiac muscle cell apoptotic process regulation of striated muscle cell apoptotic process striated muscle cell apoptotic process negative regulation of muscle cell apoptotic process negative regulation of striated muscle cell apoptotic process neuron migration transcription by RNA polymerase II regulation of transcription by RNA polymerase II wound healing morphogenesis of an epithelium epiboly involved in wound healing morphogenesis of an epithelial sheet tissue morphogenesis anatomical structure morphogenesis response to stress epiboly wound healing, spreading of cells response to wounding collagen biosynthetic process regulation of collagen biosynthetic process regulation of collagen metabolic process positive regulation of collagen metabolic process positive regulation of collagen biosynthetic process collagen metabolic process positive regulation of transcription by RNA polymerase II cellular response to nitrogen compound response to angiotensin response to peptide hormone cellular response to peptide hormone stimulus cellular response to angiotensin response to hormone cellular response to hormone stimulus plasma membrane bounded cell projection organization cell projection organization cell development neuron projection development neuron development positive regulation of hepatic stellate cell contraction actin filament-based movement hepatic stellate cell contraction regulation of actin filament-based movement positive regulation of actin filament-based movement actin-mediated cell contraction regulation of hepatic stellate cell contraction regulation of modification of synaptic structure regulation of synapse organization cell junction organization regulation of synapse structure or activity regulation of modification of postsynaptic structure synapse organization modification of synaptic structure modification of postsynaptic structure	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol presynapse synapse cell junction membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm cellular anatomical structure intracellular anatomical structure cytoplasm cytosol presynapse synapse cell junction membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen glutamatergic synapse postsynapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth B], B [auth D]	IPR020902	Actin/actin-like conserved site	Conserved Site
A [auth B], B [auth D]	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
A [auth B], B [auth D]	IPR004001	Actin, conserved site	Conserved Site
A [auth B], B [auth D]	IPR004000	Actin family	Family
C [auth E], D [auth F]	IPR036361	SAP domain superfamily	Homologous Superfamily
C [auth E], D [auth F]	IPR043451	Myocardin-like	Family
C [auth E], D [auth F]	IPR004018	RPEL repeat	Repeat
C [auth E], D [auth F]	IPR003034	SAP domain	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.