Structure of the Cul1-Rbx1-Skp1-F boxSkp2 SCF ubiquitin ligase complex.

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Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species
A687-776	d1ldja1	All alpha proteins	DNA/RNA-binding 3-helical bundle	"Winged helix" DNA-binding domain	SCF ubiquitin ligase complex WHB domain	Anaphase promoting complex (APC)	Human (Homo sapiens) [TaxId: 9606]
A17-410	d1ldja2	All alpha proteins	alpha-alpha superhelix	Cullin repeat-like	Cullin repeat	Cullin homolog 1, Cul-1	Human (Homo sapiens) [TaxId: 9606]
A411-686	d1ldja3	Multi-domain proteins (alpha and beta)	Cullin homology domain	Cullin homology domain	Cullin homology domain	Cullin homolog 1, cul-1	Human (Homo sapiens) [TaxId: 9606]
B	d1ldjb_	Small proteins	RING/U-box	RING/U-box	RING finger domain, C3HC4	RIGG-box protein 1 (RBX1) of SCF ubiquitin ligase complex	Human (Homo sapiens) [TaxId: 9606]

Chains	Domain	Class	Architecture	Topology	Homology
A1	1ldjA01	Mainly Alpha	Up-down Bundle	5 helical Cullin repeat like	Cullin Repeats
A2	1ldjA02	Mainly Alpha	Up-down Bundle	5 helical Cullin repeat like	Cullin Repeats
A3	1ldjA03	Mainly Alpha	Up-down Bundle	5 helical Cullin repeat like	Cullin Repeats
A4	1ldjA04	Mainly Alpha	Up-down Bundle	5 helical Cullin repeat like	Cullin Repeats
A5	1ldjA05	Few Secondary Structures	Irregular	Ring Box Chain A; domain 5	Ring Box Chain A; domain 5
A6	1ldjA06	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	"winged helix" repressor DNA binding domain
A7	1ldjA07	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	"winged helix" repressor DNA binding domain
B	1ldjB00	Alpha Beta	2-Layer Sandwich	Herpes Virus-1	Zinc/RING finger domain, C3HC4 (zinc finger)

Chains	Pfam Accession	Pfam Identifier	Pfam Description	Type	Source

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Cullin homolog 1 (1LDJ:A)	Ubiquitin Protein Transferase Activity Protein Binding Ubiquitin Protein Ligase Binding Ubiquitin Protein Ligase Activity	G1/s Transition of Mitotic Cell Cycle G2/m Transition of Mitotic Cell Cycle Protein Polyubiquitination Stimulatory C Type Lectin Receptor Signaling Pathway Ubiquitin Dependent Protein Catabolic Process Protein Monoubiquitination Cellular Iron Ion Homeostasis Apoptotic Process Cell Cycle Arrest Cell Proliferation Negative Regulation of Cell Proliferation Animal Organ Morphogenesis Scf Complex Assembly Negative Regulation of G2/m Transition of Mitotic Cell Cycle Viral Process Wnt Signaling Pathway Protein Ubiquitination Scf Dependent Proteasomal Ubiquitin Dependent Protein Catabolic Process Nik/nf Kappab Signaling Fc Epsilon Receptor Signaling Pathway Protein Ubiquitination Involved in Ubiquitin Dependent Protein Catabolic Process Proteasome Mediated Ubiquitin Dependent Protein Catabolic Process Post Translational Protein Modification T Cell Receptor Signaling Pathway Stress Activated Mapk Cascade Positive Regulation of Ubiquitin Protein Ligase Activity Involved in Regulation of Mitotic Cell Cycle Transition Intrinsic Apoptotic Signaling Pathway	Nucleoplasm Cytosol Scf Ubiquitin Ligase Complex Cullin Ring Ubiquitin Ligase Complex Parkin Fbxw7 Cul1 Ubiquitin Ligase Complex
B	ring-box protein 1 (1LDJ:B)	Zinc Ion Binding	none	none

Type	PDB Residue Nr.	Description