7CCC | pdb_00007ccc

The structure of the actin filament uncapping complex mediated by twinfilin

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2 Family	Capz beta-1 subunit	8102500	4003781	SCOP2 (2022-06-29)
D	SCOP2 Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8102501	3001499	SCOP2 (2022-06-29)
C	SCOP2 Family	Capz alpha-1 subunit	8102472	4003791	SCOP2 (2022-06-29)
C	SCOP2 Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8102473	3001499	SCOP2 (2022-06-29)
E	SCOP2B Superfamily	Actin-like ATPases	8040509	3000092	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Actin-like ATPases	8040506	3000092	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Actin-like ATPases	8040509	3000092	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Actin-like ATPases	8040506	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)
D	F_actin_cap_B_1st	e7cccD3	A: alpha bundles	X: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz (From Topology)	H: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz (From Topology)	T: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz	F: F_actin_cap_B_1st	ECOD (1.6)
D	F_actin_cap_B_3rd	e7cccD1	A: a+b two layers	X: a+b domain in Capz (From Topology)	H: a+b domain in Capz (From Topology)	T: a+b domain in Capz	F: F_actin_cap_B_3rd	ECOD (1.6)
D	F_actin_cap_B_2nd	e7cccD2	A: few secondary structure elements	X: beta-barrel domain in Capz (From Topology)	H: beta-barrel domain in Capz (From Topology)	T: beta-barrel domain in Capz	F: F_actin_cap_B_2nd	ECOD (1.6)
C	F-actin_cap_A_1st	e7cccC1	A: alpha bundles	X: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz (From Topology)	H: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz (From Topology)	T: alpha-helical domain in subunits of heterodimeric actin filament capping protein Capz	F: F-actin_cap_A_1st	ECOD (1.6)
C	F-actin_cap_A_3rd	e7cccC2	A: a+b two layers	X: a+b domain in Capz (From Topology)	H: a+b domain in Capz (From Topology)	T: a+b domain in Capz	F: F-actin_cap_A_3rd	ECOD (1.6)
C	F-actin_cap_A_2nd	e7cccC3	A: few secondary structure elements	X: beta-barrel domain in Capz (From Topology)	H: beta-barrel domain in Capz (From Topology)	T: beta-barrel domain in Capz	F: F-actin_cap_A_2nd	ECOD (1.6)
E	Actin_1st	e7cccE2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
E	Actin_2nd	e7cccE1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)
A	Actin_1st	e7cccA2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_1st	ECOD (1.6)
A	Actin_2nd	e7cccA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Actin_2nd	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.20.10	Alpha Beta	3-Layer(aba) Sandwich	Severin	Severin	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D	PF01115	F-actin capping protein, beta subunit (F_actin_cap_B)	F-actin capping protein, beta subunit	-	Family
C	PF01267	F-actin capping protein alpha subunit (F-actin_cap_A)	F-actin capping protein alpha subunit	-	Family
B	PF00241	Cofilin/tropomyosin-type actin-binding protein (Cofilin_ADF)	Cofilin/tropomyosin-type actin-binding protein	Severs actin filaments and binds to actin monomers.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
D	F-actin-capping protein subunit beta	cytoskeletal protein binding actin binding protein binding binding	regulation of cellular process regulation of cellular component size negative regulation of biological process protein-containing complex disassembly regulation of protein-containing complex disassembly actin filament depolymerization regulation of actin filament depolymerization cellular component biogenesis actin filament capping cellular component assembly actin filament-based process regulation of biological quality negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization regulation of cellular process regulation of cellular component size negative regulation of biological process protein-containing complex disassembly regulation of protein-containing complex disassembly actin filament depolymerization regulation of actin filament depolymerization cellular component biogenesis actin filament capping cellular component assembly actin filament-based process regulation of biological quality negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization cellular component disassembly regulation of biological process barbed-end actin filament capping negative regulation of cellular component organization actin filament organization regulation of organelle organization negative regulation of protein depolymerization negative regulation of protein-containing complex assembly regulation of protein polymerization regulation of supramolecular fiber organization supramolecular fiber organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process cellular component organization regulation of protein-containing complex assembly negative regulation of protein-containing complex disassembly negative regulation of cellular process protein-containing complex assembly negative regulation of protein polymerization cellular component organization or biogenesis regulation of actin filament polymerization actin polymerization or depolymerization protein polymerization regulation of actin filament organization actin cytoskeleton organization actin filament polymerization protein-containing complex organization regulation of protein depolymerization negative regulation of cytoskeleton organization regulation of actin polymerization or depolymerization biological regulation regulation of cellular component biogenesis organelle organization negative regulation of organelle organization regulation of actin filament length regulation of actin cytoskeleton organization cellular process negative regulation of actin filament depolymerization protein depolymerization cytoskeleton organization regulation of anatomical structure size	intracellular anatomical structure intracellular membraneless organelle sarcomere intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex protein-containing complex intracellular anatomical structure intracellular membraneless organelle sarcomere intracellular organelle cellular anatomical structure organelle membraneless organelle contractile muscle fiber cytoplasm supramolecular fiber myofibril supramolecular polymer supramolecular complex protein-containing complex cytoskeleton F-actin capping protein complex actin cytoskeleton
C	F-actin-capping protein subunit alpha	cytoskeletal protein binding actin binding protein binding binding	cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly cellular process cellular component organization or biogenesis regulation of cellular process regulation of cellular component size negative regulation of biological process protein-containing complex disassembly regulation of protein-containing complex disassembly actin filament depolymerization regulation of actin filament depolymerization cellular component organization cellular component biogenesis cell junction organization cellular component assembly cell junction assembly cellular process cellular component organization or biogenesis regulation of cellular process regulation of cellular component size negative regulation of biological process protein-containing complex disassembly regulation of protein-containing complex disassembly actin filament depolymerization regulation of actin filament depolymerization actin filament capping actin filament-based process regulation of biological quality negative regulation of supramolecular fiber organization negative regulation of actin filament polymerization cellular component disassembly regulation of biological process barbed-end actin filament capping negative regulation of cellular component organization actin filament organization regulation of organelle organization negative regulation of protein depolymerization negative regulation of protein-containing complex assembly regulation of protein polymerization regulation of supramolecular fiber organization supramolecular fiber organization regulation of cytoskeleton organization regulation of cellular component organization regulation of actin filament-based process regulation of protein-containing complex assembly negative regulation of protein-containing complex disassembly negative regulation of cellular process protein-containing complex assembly negative regulation of protein polymerization regulation of actin filament polymerization actin polymerization or depolymerization protein polymerization regulation of actin filament organization actin cytoskeleton organization actin filament polymerization protein-containing complex organization regulation of protein depolymerization negative regulation of cytoskeleton organization regulation of actin polymerization or depolymerization biological regulation regulation of cellular component biogenesis organelle organization negative regulation of organelle organization regulation of actin filament length regulation of actin cytoskeleton organization negative regulation of actin filament depolymerization protein depolymerization cytoskeleton organization regulation of anatomical structure size	protein-containing complex cellular anatomical structure intracellular anatomical structure WASH complex cytoplasm membrane cell-cell junction anchoring junction cell junction intracellular organelle cytoskeleton organelle membraneless organelle F-actin capping protein complex protein-containing complex cellular anatomical structure intracellular anatomical structure WASH complex cytoplasm membrane cell-cell junction anchoring junction cell junction intracellular organelle cytoskeleton organelle membraneless organelle F-actin capping protein complex intracellular membraneless organelle actin cytoskeleton cytosol apical part of cell cluster of actin-based cell projections brush border cell cortex cortical cytoskeleton cell periphery
B	Twinfilin-1	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding ion binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding ion binding phosphatidylinositol-4,5-bisphosphate binding anion binding phosphatidylinositol bisphosphate binding phospholipid binding lipid binding phosphatidylinositol phosphate binding phosphatidylinositol binding small molecule binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding purine nucleotide binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding cell adhesion molecule binding cadherin binding actin monomer binding	cellular component disassembly actin polymerization or depolymerization actin cytoskeleton organization protein-containing complex organization actin filament organization protein-containing complex disassembly actin filament depolymerization cellular component organization organelle organization actin filament-based process cellular process cellular component organization or biogenesis supramolecular fiber organization protein depolymerization cellular component disassembly actin polymerization or depolymerization actin cytoskeleton organization protein-containing complex organization actin filament organization protein-containing complex disassembly actin filament depolymerization cellular component organization organelle organization actin filament-based process cellular process cellular component organization or biogenesis supramolecular fiber organization protein depolymerization cytoskeleton organization 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 cellular component biogenesis regulation of protein-containing complex assembly cellular component assembly 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 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 neuron projection development multicellular organismal process positive regulation of cellular component organization cellular developmental process cell projection organization positive regulation of biological process cell development neuron projection development neurogenesis multicellular organism development neuron differentiation positive regulation of neuron projection development cell differentiation anatomical structure development positive regulation of cell projection organization positive regulation of cellular process system development developmental process plasma membrane bounded cell projection organization regulation of cell projection organization nervous system development generation of neurons neuron development regulation of plasma membrane bounded cell projection organization muscle hypertrophy regulation of muscle adaptation system process positive regulation of cardiac muscle hypertrophy response to stimulus 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 regulation of response to stimulus positive regulation of muscle hypertrophy cardiac muscle hypertrophy positive regulation of multicellular organismal process regulation of multicellular organismal process lamellipodium assembly regulation of cell projection assembly plasma membrane bounded cell projection assembly regulation of plasma membrane bounded cell projection assembly regulation of lamellipodium assembly regulation of lamellipodium organization lamellipodium organization cell projection assembly regulation of protein-containing complex disassembly regulation of actin filament depolymerization actin filament capping barbed-end actin filament capping negative regulation of protein depolymerization negative regulation of protein-containing complex disassembly regulation of protein depolymerization negative regulation of actin filament depolymerization	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction cell-cell junction ruffle cell leading edge plasma membrane membrane leading edge membrane plasma membrane bounded cell projection cell periphery cell projection cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction cell-cell junction ruffle cell leading edge plasma membrane membrane leading edge membrane plasma membrane bounded cell projection cell periphery cell projection ruffle membrane plasma membrane region cell projection membrane intracellular organelle intracellular anatomical structure cytoskeleton organelle membraneless organelle intracellular membraneless organelle actin cytoskeleton cytoplasm cytosol contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex perinuclear region of cytoplasm polymeric cytoskeletal fiber actin filament actin-based cell projection filopodium
A, E	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

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D	IPR037282	F-actin-capping protein subunit alpha/beta	Homologous Superfamily
D	IPR019771	F-actin capping protein, beta subunit, conserved site	Conserved Site
D	IPR001698	F-actin-capping protein subunit beta	Family
D	IPR043175	F-actin-capping protein subunit beta, N-terminal domain	Homologous Superfamily
D	IPR042276	F-actin-capping protein subunit alpha/beta, domain 2	Homologous Superfamily
C	IPR002189	F-actin-capping protein subunit alpha	Family
C	IPR042489	F-actin capping protein, alpha subunit, domain 1	Homologous Superfamily
C	IPR037282	F-actin-capping protein subunit alpha/beta	Homologous Superfamily
C	IPR017865	F-actin capping protein, alpha subunit, conserved site	Conserved Site
C	IPR042276	F-actin-capping protein subunit alpha/beta, domain 2	Homologous Superfamily
B	IPR029006	ADF-H/Gelsolin-like domain superfamily	Homologous Superfamily
B	IPR028458	Twinfilin	Family
B	IPR002108	Actin-depolymerising factor homology domain	Domain
A, E	IPR020902	Actin/actin-like conserved site	Conserved Site
A, E	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
A, E	IPR004001	Actin, conserved site	Conserved Site
A, E	IPR004000	Actin family	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: Q12792	lymphoma astrocytic tumor lung cancer malignant glioma ovarian cancer dermatomyositis non-small cell lung carcinoma plasma cell myeloma glioblastoma malignant ependymoma osteosarcoma psoriasis

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
A, E	HIC	Parent Component: HIS RESID: AA0317 PSI-MOD : 1'-methyl-L-histidine MOD:00322

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.