8CAF | pdb_00008caf

N8C_Fab3b in complex with NEDD8-CUL1(WHB)

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
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
H	SCOP2B Superfamily	Winged helix DNA-binding domain	8003463	3000034	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Winged helix DNA-binding domain	8003463	3000034	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Ubiquitin-like	8034470	3000157	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Ubiquitin-like	8034470	3000157	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)
C	Histone	e8cafC1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Histone	ECOD (v294.1)
A	SPRY,PRY	e8cafA1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SPRY,PRY	ECOD (v294.1)
D	Histone	e8cafD1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Histone	ECOD (v294.1)
B	SPRY,PRY	e8cafB1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SPRY,PRY	ECOD (v294.1)
H	Histone	e8cafH1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Histone	ECOD (v294.1)
E	SPRY,PRY	e8cafE1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SPRY,PRY	ECOD (v294.1)
G	Histone	e8cafG1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Histone	ECOD (v294.1)
F	SPRY,PRY	e8cafF1	A: a/b three-layered sandwiches	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: SPRY,PRY	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
H	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (utative)
E	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (utative)
G	3.10.20.90	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Phosphatidylinositol 3-kinase Catalytic Subunit	CATH (utative)
F	3.10.20.90	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Phosphatidylinositol 3-kinase Catalytic Subunit	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A, C	Light Chain	IGKV1	Kappa	cullin-1 \| nedd8	SAbDab (2026-04-17)
B, D	Heavy Chain	IGHV3	-	cullin-1 \| nedd8	SAbDab (2026-04-17)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
E, H	PF10557	Cullin protein neddylation domain (Cullin_Nedd8)	Cullin protein neddylation domain	This is the neddylation site of cullin proteins which are a family of structurally related proteins containing an evolutionarily conserved cullin domain. With the exception of APC2, each member of the cullin family is modified by Nedd8 and several cu ...	This is the neddylation site of cullin proteins which are a family of structurally related proteins containing an evolutionarily conserved cullin domain. With the exception of APC2, each member of the cullin family is modified by Nedd8 and several cullins function in Ubiquitin-dependent proteolysis, a process in which the 26S proteasome recognises and subsequently degrades a target protein tagged with K48-linked poly-ubiquitin chains. Cullins are molecular scaffolds responsible for assembling the ROC1/Rbx1 RING-based E3 ubiquitin ligases, of which several play a direct role in tumorigenesis. Nedd8/Rub1 is a small ubiquitin-like protein, which was originally found to be conjugated to Cdc53, a cullin component of the SCF (Skp1-Cdc53/CUL1-F-box protein) E3 Ub ligase complex in Saccharomyces cerevisiae, and Nedd8 modification has now emerged as a regulatory pathway of fundamental importance for cell cycle control and for embryogenesis in metazoans. The only identified Nedd8 substrates are cullins. Neddylation results in covalent conjugation of a Nedd8 moiety onto a conserved cullin lysine residue [1].	Domain
F, G	PF00240	Ubiquitin family (ubiquitin)	Ubiquitin family	This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry ...	This family contains a number of ubiquitin-like proteins: SUMO (smt3 homologue) (see Swiss:Q02724), Nedd8 (see Swiss:P29595), Elongin B (see Swiss:Q15370), Rub1 (see Swiss:Q9SHE7), and Parkin (see Swiss:O60260). A number of them are thought to carry a distinctive five-residue motif termed the proteasome-interacting motif (PIM), which may have a biologically significant role in protein delivery to proteasomes and recruitment of proteasomes to transcription sites [5].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, C	Fab Light Chain	-	-	-
B, D	Fab Heavy Chain	-	-	-
E, H	Cullin-1	protein complex scaffold activity ubiquitin ligase complex scaffold activity structural molecule activity protein-macromolecule adaptor activity molecular adaptor activity ubiquitin protein ligase binding protein binding binding ubiquitin-like protein ligase binding enzyme binding	cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction positive regulation of canonical NF-kappaB signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction positive regulation of canonical NF-kappaB signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette signal transduction positive regulation of cellular process regulation of biological process regulation of signaling biological regulation positive regulation of intracellular signal transduction canonical NF-kappaB signal transduction regulation of response to stimulus regulation of cell communication regulation of canonical NF-kappaB signal transduction cellular process positive regulation of signaling developmental process anatomical structure morphogenesis anatomical structure development animal organ development animal organ morphogenesis cell death apoptotic signaling pathway apoptotic process intrinsic apoptotic signaling pathway programmed cell death cell population proliferation primary metabolic process protein ubiquitination macromolecule modification metabolic process protein metabolic process macromolecule metabolic process post-translational protein modification protein modification process protein modification by small protein conjugation protein modification by small protein conjugation or removal catabolic process proteasomal protein catabolic process protein catabolic process proteasome-mediated ubiquitin-dependent protein catabolic process macromolecule catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process SCF-dependent proteasomal ubiquitin-dependent protein catabolic process ubiquitin-dependent protein catabolic process response to oxidative stress cellular response to chemical stimulus cellular response to stress response to stress response to chemical cellular response to oxidative stress cellular response to chemical stress protein polyubiquitination protein K48-linked ubiquitination mitotic cell cycle process cell cycle phase transition cell cycle G1/S transition of mitotic cell cycle cell cycle G1/S phase transition mitotic cell cycle mitotic cell cycle phase transition cell cycle process protein monoubiquitination	cullin-RING ubiquitin ligase complex protein-containing complex ubiquitin ligase complex catalytic complex transferase complex intracellular protein-containing complex cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane Parkin-FBXW7-Cul1 ubiquitin ligase complex cullin-RING ubiquitin ligase complex protein-containing complex ubiquitin ligase complex catalytic complex transferase complex intracellular protein-containing complex cellular anatomical structure intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane Parkin-FBXW7-Cul1 ubiquitin ligase complex membrane-bounded organelle nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen organelle nuclear lumen SCF ubiquitin ligase complex
F, G	NEDD8	protein tag activity molecular tag activity ubiquitin protein ligase binding protein binding binding ubiquitin-like protein ligase binding enzyme binding	cellular response to stimulus cellular response to nitrogen compound response to stimulus response to alcohol response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound response to alkaloid cellular response to chemical stimulus cellular response to alcohol response to camptothecin cellular response to camptothecin response to chemical cellular process cellular response to stimulus cellular response to nitrogen compound response to stimulus response to alcohol response to oxygen-containing compound response to nitrogen compound cellular response to oxygen-containing compound response to alkaloid cellular response to chemical stimulus cellular response to alcohol response to camptothecin cellular response to camptothecin response to chemical cellular process cellular response to alkaloid macromolecule modification metabolic process primary metabolic process protein metabolic process macromolecule metabolic process protein modification process catabolic process modification-dependent macromolecule catabolic process modification-dependent protein catabolic process protein catabolic process macromolecule catabolic process regulation of biological process regulation of cellular process regulation of protein metabolic process biological regulation regulation of macromolecule metabolic process regulation of primary metabolic process regulation of proteolysis proteolysis regulation of metabolic process post-translational protein modification protein neddylation protein modification by small protein conjugation protein modification by small protein conjugation or removal developmental process anatomical structure morphogenesis anatomical structure development ubiquitin-dependent protein catabolic process multicellular organismal process regulation of cellular component organization cellular component organization cellular component biogenesis multicellular organism development cellular component assembly regulation of postsynapse assembly cell junction assembly regulation of synapse structure or activity synapse organization cellular component organization or biogenesis regulation of synapse assembly regulation of biological quality system development postsynapse organization postsynapse assembly regulation of postsynapse organization nervous system development regulation of cellular component biogenesis regulation of cell junction assembly regulation of synapse organization cell junction organization synapse assembly RNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II regulation of biosynthetic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of gene expression biosynthetic process regulation of macromolecule biosynthetic process regulation of DNA-templated transcription localization macromolecule localization intracellular protein localization	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol nucleus membrane-enclosed lumen extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen intracellular organelle nucleoplasm organelle lumen nuclear lumen synapse cell junction glutamatergic synapse postsynapse

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
E, H	IPR045093	Cullin	Family
E, H	IPR016158	Cullin homology domain	Domain
E, H	IPR016157	Cullin, conserved site	Conserved Site
E, H	IPR059120	Cullin-like, alpha+beta domain	Domain
E, H	IPR001373	Cullin, N-terminal	Domain
E, H	IPR019559	Cullin, neddylation domain	Domain
E, H	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
E, H	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
E, H	IPR036317	Cullin homology domain superfamily	Homologous Superfamily
E, H	IPR016159	Cullin repeat-like-containing domain superfamily	Homologous Superfamily
F, G	IPR019954	Ubiquitin conserved site	Conserved Site
F, G	IPR050158	Ubiquitin and ubiquitin-like	Family
F, G	IPR038738	Nedd8-like ubiquitin	Domain
F, G	IPR000626	Ubiquitin-like domain	Domain
F, G	IPR019956	Ubiquitin domain	Domain
F, G	IPR029071	Ubiquitin-like domain superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
E, H	Pharos: Q13616	Stevens-Johnson syndrome Drug-Induced Stevens Johnson Syndrome ovarian cancer toxic epidermal necrolysis inflammatory bowel disease
F, G	Pharos: Q15843	language disorder

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.