1IZN

Crystal Structure of Actin Filament Capping Protein CapZ

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	d1izna_	Multi-domain proteins (alpha and beta)	Subunits of heterodimeric actin filament capping protein Capz	Subunits of heterodimeric actin filament capping protein Capz	Capz alpha-1 subunit	Capz alpha-1 subunit	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
C	d1iznc_	Multi-domain proteins (alpha and beta)	Subunits of heterodimeric actin filament capping protein Capz	Subunits of heterodimeric actin filament capping protein Capz	Capz alpha-1 subunit	Capz alpha-1 subunit	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
D	d1iznd_	Multi-domain proteins (alpha and beta)	Subunits of heterodimeric actin filament capping protein Capz	Subunits of heterodimeric actin filament capping protein Capz	Capz beta-1 subunit	Capz beta-1 subunit	chicken (Gallus gallus ) [TaxId: 9031 ],	SCOPe (2.08)
B	d1iznb_	Multi-domain proteins (alpha and beta)	Subunits of heterodimeric actin filament capping protein Capz	Subunits of heterodimeric actin filament capping protein Capz	Capz beta-1 subunit	Capz beta-1 subunit	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	Capz alpha-1 subunit	8019834	4003791	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8032214	3001499	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8032214	3001499	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8032215	3001499	SCOP2B (2022-06-29)
B	SCOP2 Family	Capz beta-1 subunit	8019835	4003781	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Subunits of heterodimeric actin filament capping protein Capz	8032215	3001499	SCOP2 (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	F-actin_cap_A_1st	e1iznA1	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)
A	F-actin_cap_A_3rd	e1iznA2	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)
A	F-actin_cap_A_2nd	e1iznA3	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)
C	F-actin_cap_A_1st	e1iznC1	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	e1iznC2	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	e1iznC3	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)
D	F_actin_cap_B_1st	e1iznD1	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	e1iznD2	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	e1iznD3	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)
B	F_actin_cap_B_1st	e1iznB1	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)
B	F_actin_cap_B_3rd	e1iznB2	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)
B	F_actin_cap_B_2nd	e1iznB3	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.1140.60	Alpha Beta	2-Layer Sandwich	Ribosomal protein S3 C-terminal domain	F-actin capping protein, alpha subunit	CATH (4.3.0)
A	3.90.1150.210	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	F-actin capping protein, beta subunit	CATH (4.3.0)
C	3.30.1140.60	Alpha Beta	2-Layer Sandwich	Ribosomal protein S3 C-terminal domain	F-actin capping protein, alpha subunit	CATH (4.3.0)
C	3.90.1150.210	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	F-actin capping protein, beta subunit	CATH (4.3.0)
D	1.20.58.570	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
D	3.90.1150.210	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	F-actin capping protein, beta subunit	CATH (4.3.0)
D	6.10.250.30	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Capz alpha-1 subunit	CATH (4.3.0)
B	1.20.58.570	Mainly Alpha	Up-down Bundle	Methane Monooxygenase Hydroxylase	Chain G, domain 1	CATH (4.3.0)
B	3.90.1150.210	Alpha Beta	Alpha-Beta Complex	Aspartate Aminotransferase, domain 1	F-actin capping protein, beta subunit	CATH (4.3.0)
B	6.10.250.30	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces	Capz alpha-1 subunit	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF01267	F-actin capping protein alpha subunit (F-actin_cap_A)	F-actin capping protein alpha subunit	-	Family
B, D	PF01115	F-actin capping protein, beta subunit (F_actin_cap_B)	F-actin capping protein, beta subunit	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	CapZ alpha-1 subunit	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament 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 negative regulation of supramolecular fiber organization regulation of biological quality 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 biological regulation regulation of actin polymerization or depolymerization 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 intracellular anatomical structure WASH complex cytoplasm cellular anatomical entity Z disc sarcomere intracellular organelle I band organelle intracellular non-membrane-bounded organelle contractile muscle fiber supramolecular fiber myofibril protein-containing complex intracellular anatomical structure WASH complex cytoplasm cellular anatomical entity Z disc sarcomere intracellular organelle I band organelle intracellular non-membrane-bounded organelle contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex non-membrane-bounded organelle cytoskeleton F-actin capping protein complex actin cytoskeleton cytosol cell periphery plasma membrane membrane
B, D	CapZ beta-1 subunit	cytoskeletal protein binding actin binding protein-containing complex binding protein binding binding actin filament binding	lamellipodium assembly plasma membrane bounded cell projection organization cell projection organization plasma membrane bounded cell projection assembly cellular component organization cellular component biogenesis cellular component assembly lamellipodium organization cellular process cellular component organization or biogenesis cell projection assembly developmental process anatomical structure morphogenesis regulation of biological process lamellipodium assembly plasma membrane bounded cell projection organization cell projection organization plasma membrane bounded cell projection assembly cellular component organization cellular component biogenesis cellular component assembly lamellipodium organization cellular process cellular component organization or biogenesis cell projection assembly developmental process anatomical structure morphogenesis regulation of biological process regulation of developmental process anatomical structure development biological regulation cell morphogenesis regulation of cell morphogenesis regulation of anatomical structure morphogenesis filopodium assembly regulation of cellular component organization regulation of cellular process negative regulation of filopodium assembly negative regulation of biological process regulation of filopodium assembly negative regulation of plasma membrane bounded cell projection assembly negative regulation of cellular process negative regulation of cell projection organization negative regulation of cellular component organization regulation of cell projection organization regulation of cell projection assembly regulation of cellular component biogenesis regulation of plasma membrane bounded cell projection assembly regulation of plasma membrane bounded cell projection organization organelle organization cytoskeleton organization regulation of lamellipodium assembly regulation of lamellipodium organization regulation of cellular component size 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 negative regulation of supramolecular fiber organization regulation of biological quality negative regulation of actin filament polymerization cellular component disassembly barbed-end actin filament capping 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 actin filament-based process regulation of protein-containing complex assembly negative regulation of protein-containing complex disassembly 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 negative regulation of organelle organization regulation of actin filament length regulation of actin cytoskeleton organization negative regulation of actin filament depolymerization protein depolymerization regulation of anatomical structure size	cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium protein-containing complex intracellular anatomical structure WASH complex cytoplasm membrane Z disc sarcomere intracellular organelle I band cell projection cell leading edge cellular anatomical entity plasma membrane bounded cell projection lamellipodium protein-containing complex intracellular anatomical structure WASH complex cytoplasm membrane Z disc sarcomere intracellular organelle I band organelle intracellular non-membrane-bounded organelle contractile muscle fiber supramolecular fiber myofibril supramolecular polymer supramolecular complex non-membrane-bounded organelle cytosol cluster of actin-based cell projections brush border membrane-bounded organelle sperm connecting piece cilium 9+2 motile cilium sperm flagellum motile cilium neuron to neuron synapse synapse cell junction hippocampal mossy fiber to CA3 synapse cytoskeleton F-actin capping protein complex actin cytoskeleton postsynaptic density postsynapse postsynaptic specialization asymmetric synapse Schaffer collateral - CA1 synapse cell cortex cortical cytoskeleton cell periphery

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR002189	F-actin-capping protein subunit alpha	Family
A, C	IPR042489	F-actin capping protein, alpha subunit, domain 1	Homologous Superfamily
A, C	IPR037282	F-actin-capping protein subunit alpha/beta	Homologous Superfamily
A, C	IPR017865	F-actin capping protein, alpha subunit, conserved site	Conserved Site
A, C	IPR042276	F-actin-capping protein subunit alpha/beta, domain 2	Homologous Superfamily
B, D	IPR001698	F-actin-capping protein subunit beta	Family
B, D	IPR019771	F-actin capping protein, beta subunit, conserved site	Conserved Site
B, D	IPR043175	F-actin-capping protein subunit beta, N-terminal domain	Homologous Superfamily
B, D	IPR037282	F-actin-capping protein subunit alpha/beta	Homologous Superfamily
B, D	IPR042276	F-actin-capping protein subunit alpha/beta, domain 2	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.