5NBM | pdb_00005nbm

Crystal structure of the Arp4-N-actin(ATP-state) heterodimer bound by a nanobody

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Protein Modification Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Actin-like ATPases	8044481	3000092	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Actin-like ATPases	8044482	3000092	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Actin-like ATPases	8044482	3000092	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Actin-like ATPases	8044481	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)
A	Actin_1st	e5nbmA2	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	e5nbmA1	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)
B	Actin_1st	e5nbmB1	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)
B	Actin_2nd	e5nbmB2	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)
C	Actin_1st	e5nbmC1	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)
C	Actin_2nd	e5nbmC2	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)
D	Actin_1st	e5nbmD2	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)
D	Actin_2nd	e5nbmD1	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)
E	V-set_8	e5nbmE1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)
F	V-set_8	e5nbmF1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_8	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E, F	Heavy Chain	IGHV1	-	actin \| actin-related protein 4	SAbDab (2025-10-24)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C, D	PF00022	Actin (Actin)	Actin	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Actin-related protein 4	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 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 protein binding histone binding chromatin binding	regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of cellular process RNA metabolic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation primary metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process cellular process metabolic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription macromolecule metabolic process regulation of metabolic process cellular response to stimulus response to stimulus DNA metabolic process cellular response to stress DNA damage response response to stress DNA repair organelle assembly protein-containing complex organization chromosome organization membraneless organelle assembly cellular component organization cellular component biogenesis organelle organization cellular component assembly kinetochore assembly protein-containing complex assembly kinetochore organization cellular component organization or biogenesis transcription by RNA polymerase II regulation of transcription by RNA polymerase II chromatin organization chromatin remodeling	membrane-bounded organelle ATPase complex protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle cellular anatomical structure membraneless organelle SWI/SNF superfamily-type complex membrane-bounded organelle ATPase complex protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle cellular anatomical structure membraneless organelle SWI/SNF superfamily-type complex INO80-type complex catalytic complex intracellular membraneless organelle chromatin intracellular membrane-bounded organelle Ino80 complex organelle lumen organelle nuclear lumen NuA4 histone acetyltransferase complex transferase complex H4/H2A histone acetyltransferase complex histone acetyltransferase complex acetyltransferase complex H4 histone acetyltransferase complex protein acetyltransferase complex intracellular protein-containing complex histone deacetylase complex nucleoplasm Swr1 complex SWI/SNF complex
C, D	Actin	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 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 structural constituent of cytoskeleton structural molecule activity pyrophosphatase activity ATP hydrolysis activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity ATP-dependent activity identical protein binding protein binding	sexual reproduction cellular developmental process reproductive process cellular component assembly involved in morphogenesis cell wall organization or biogenesis cell development cell wall organization spore wall biogenesis developmental process involved in reproduction meiotic cell cycle process ascospore wall assembly cellular component biogenesis cellular component organization cellular anatomical entity morphogenesis cellular component assembly sexual reproduction cellular developmental process reproductive process cellular component assembly involved in morphogenesis cell wall organization or biogenesis cell development cell wall organization spore wall biogenesis developmental process involved in reproduction meiotic cell cycle process ascospore wall assembly cellular component biogenesis cellular component organization cellular anatomical entity morphogenesis cellular component assembly spore wall assembly sexual sporulation cell differentiation anatomical structure development cell cycle cellular component organization or biogenesis cell cycle process developmental process fungal-type cell wall organization cell wall assembly sexual sporulation resulting in formation of a cellular spore reproductive process in single-celled organism meiotic cell cycle ascospore wall biogenesis fungal-type cell wall assembly sporulation resulting in formation of a cellular spore anatomical structure morphogenesis ascospore formation fungal-type cell wall organization or biogenesis cell wall biogenesis anatomical structure formation involved in morphogenesis cellular process sporulation fungal-type cell wall biogenesis external encapsulating structure organization localization import into cell transport endocytosis establishment of localization vesicle-mediated transport establishment of cell polarity establishment or maintenance of cell polarity RNA metabolic process primary metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA-templated transcription nucleic acid biosynthetic process biosynthetic process metabolic process macromolecule metabolic process cytoskeleton-dependent cytokinesis mitotic cytokinetic process mitotic cytokinesis mitotic actomyosin contractile ring contraction mitotic cell cycle contractile ring contraction cortical actin cytoskeleton organization actin filament-based process actin cytoskeleton organization actomyosin structure organization cortical cytoskeleton organization cytokinesis organelle organization mitotic cell cycle process actomyosin contractile ring contraction cytokinetic process actomyosin contractile ring organization cell division cytoskeleton organization vacuole organization organelle inheritance vacuole inheritance regulation of cellular process regulation of primary metabolic process regulation of RNA metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process regulation of biological process biological regulation regulation of macromolecule metabolic process regulation of gene expression regulation of macromolecule biosynthetic process regulation of DNA-templated transcription regulation of metabolic process cellular response to stimulus response to stimulus DNA metabolic process cellular response to stress DNA damage response response to stress DNA repair establishment of protein localization nitrogen compound transport secretion establishment of protein localization to extracellular region export from cell protein secretion protein localization to extracellular region secretion by cell protein transport macromolecule localization intracellular protein localization chromatin organization chromatin remodeling	membrane-bounded organelle ATPase complex protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle cellular anatomical structure membraneless organelle SWI/SNF superfamily-type complex membrane-bounded organelle ATPase complex protein-containing complex intracellular anatomical structure nucleus membrane-enclosed lumen nuclear protein-containing complex nuclear chromosome chromosome intracellular organelle lumen intracellular organelle cellular anatomical structure membraneless organelle SWI/SNF superfamily-type complex INO80-type complex catalytic complex intracellular membraneless organelle chromatin intracellular membrane-bounded organelle Ino80 complex organelle lumen organelle nuclear lumen cell cortex cortical cytoskeleton actin cytoskeleton cell periphery endocytic patch cytoskeleton cortical actin cytoskeleton actin cortical patch cytoplasm NuA4 histone acetyltransferase complex transferase complex H4/H2A histone acetyltransferase complex histone acetyltransferase complex acetyltransferase complex H4 histone acetyltransferase complex protein acetyltransferase complex intracellular protein-containing complex contractile ring cell division site cellular bud neck cellular bud cellular bud neck contractile ring actomyosin contractile ring mitotic actomyosin contractile ring site of polarized growth actin filament bundle histone deacetylase complex nucleoplasm Swr1 complex polymeric cytoskeletal fiber actin filament supramolecular fiber supramolecular polymer supramolecular complex
E, F	nAct-Nanobody	-	-	-
G, H	Unknown peptide	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR020902	Actin/actin-like conserved site	Conserved Site
A, B	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
A, B	IPR004000	Actin family	Family
C, D	IPR020902	Actin/actin-like conserved site	Conserved Site
C, D	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
C, D	IPR004001	Actin, conserved site	Conserved Site
C, D	IPR004000	Actin family	Family

Protein Modification Annotation

Modified Residue(s)
Chain	Residue(s)	Description
C, D	HIC	Parent Component: HIS RESID: AA0317 PSI-MOD : 1'-methyl-L-histidine MOD:00322
G, H	UNK	RESID: AA0317

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.