9PXB | pdb_00009pxb

Hamster Scap/Insig-2 complex with cholesterol and bound Fab4G10

External Resource: Annotation

SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV14	-	sterol regulatory element-binding protein cleavage-activating protein	SAbDab (2026-02-06)
D [auth L]	Light Chain	IGKV10	Kappa	sterol regulatory element-binding protein cleavage-activating protein	SAbDab (2026-02-06)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Sterol regulatory element-binding protein cleavage-activating protein	sterol binding binding steroid binding lipid binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cellular response to sterol depletion signaling biological regulation response to sterol depletion intracellular signal transduction cell communication SREBP signaling pathway cellular response to stress response to stress ER-nucleus signaling pathway cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus cellular response to sterol depletion signaling biological regulation response to sterol depletion intracellular signal transduction cell communication SREBP signaling pathway cellular response to stress response to stress ER-nucleus signaling pathway cellular process signal transduction membrane organization vesicle budding from membrane cellular localization transport intracellular transport endoplasmic reticulum to Golgi vesicle-mediated transport vesicle cargo loading establishment of localization vesicle-mediated transport cellular component organization vesicle organization localization organelle organization COPII-coated vesicle cargo loading establishment of localization in cell cellular component organization or biogenesis COPII-coated vesicle budding Golgi vesicle transport establishment of protein localization nucleocytoplasmic transport nuclear transport protein localization to nucleus import into nucleus establishment of protein localization to organelle protein transport macromolecule localization protein localization to organelle protein import into nucleus intracellular protein localization intracellular protein transport secondary alcohol metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process alcohol metabolic process small molecule metabolic process metabolic process primary metabolic process lipid metabolic process regulation of cholesterol biosynthetic process regulation of steroid biosynthetic process regulation of cholesterol metabolic process regulation of lipid metabolic process lipid biosynthetic process regulation of primary metabolic process regulation of small molecule metabolic process steroid biosynthetic process regulation of biosynthetic process secondary alcohol biosynthetic process regulation of alcohol biosynthetic process small molecule biosynthetic process regulation of steroid metabolic process cholesterol biosynthetic process biosynthetic process sterol biosynthetic process regulation of sterol biosynthetic process alcohol biosynthetic process regulation of lipid biosynthetic process regulation of metabolic process response to sterol response to lipid response to oxygen-containing compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical cellular response to lipid cellular response to sterol	protein-containing complex cellular anatomical structure membrane membrane protein complex SREBP-SCAP complex membrane-bounded organelle Golgi membrane intracellular anatomical structure Golgi apparatus intracellular membrane-bounded organelle endomembrane system intracellular organelle bounding membrane of organelle organelle protein-containing complex cellular anatomical structure membrane membrane protein complex SREBP-SCAP complex membrane-bounded organelle Golgi membrane intracellular anatomical structure Golgi apparatus intracellular membrane-bounded organelle endomembrane system intracellular organelle bounding membrane of organelle organelle cytoplasm organelle membrane organelle subcompartment SREBP-SCAP-Insig complex endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane vesicle coat intracellular vesicle coated membrane membrane coat coated vesicle membrane cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle coated vesicle vesicle transport vesicle transport vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane
B [auth C]	Insulin-induced gene protein	binding lipid binding	cellular response to stimulus cellular response to nitrogen compound response to stimulus response to endogenous stimulus response to peptide hormone response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to chemical stimulus response to hormone response to chemical response to insulin cellular response to stimulus cellular response to nitrogen compound response to stimulus response to endogenous stimulus response to peptide hormone response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to endogenous stimulus cellular response to chemical stimulus response to hormone response to chemical response to insulin cellular process cellular response to insulin stimulus cellular response to hormone stimulus regulation of biological process regulation of cellular process cellular response to sterol depletion signaling biological regulation response to sterol depletion intracellular signal transduction cell communication SREBP signaling pathway cellular response to stress response to stress ER-nucleus signaling pathway signal transduction secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process primary metabolic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process alcohol biosynthetic process small molecule metabolic process metabolic process steroid biosynthetic process lipid metabolic process regulation of cellular response to stress negative regulation of biological process regulation of signal transduction localization maintenance of protein localization in endoplasmic reticulum cellular response to sterol intracellular protein localization protein localization to endoplasmic reticulum regulation of SREBP signaling pathway maintenance of location regulation of response to stimulus cellular response to lipid maintenance of protein location cellular localization response to lipid negative regulation of signaling negative regulation of intracellular signal transduction negative regulation of cell communication maintenance of location in cell negative regulation of SREBP signaling pathway regulation of intracellular signal transduction regulation of response to stress maintenance of protein location in cell negative regulation of cellular process regulation of signaling response to sterol negative regulation of response to stimulus negative regulation of signal transduction macromolecule localization protein localization to organelle SREBP-SCAP complex retention in endoplasmic reticulum regulation of cell communication maintenance of protein localization in organelle	membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle SREBP-SCAP-Insig complex endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network membrane-bounded organelle protein-containing complex intracellular anatomical structure organelle subcompartment membrane membrane protein complex intracellular membrane-bounded organelle SREBP-SCAP-Insig complex endomembrane system endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane
C [auth H]	Fab4G10 heavy chain	-	-	-
D [auth L]	Fab4G10 light chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR057041	SCAP, N-terminal	Domain
A	IPR019775	WD40 repeat, conserved site	Conserved Site
A	IPR036322	WD40-repeat-containing domain superfamily	Homologous Superfamily
A	IPR000731	Sterol-sensing domain	Domain
A	IPR001680	WD40 repeat	Repeat
A	IPR053958	HMGCR/SNAP/NPC1-like, sterol-sensing domain	Domain
A	IPR057042	SCAP, beta-propeller	Domain
A	IPR030225	Sterol regulatory element-binding protein cleavage-activating protein	Family
A	IPR015943	WD40/YVTN repeat-like-containing domain superfamily	Homologous Superfamily
B [auth C]	IPR025929	Insulin-induced protein family	Family

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.