Annotations: 7N4V

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF02460	e7n4vA2	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: PF02460	ECOD (1.6)
A	PF12349	e7n4vA3	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: PF12349	ECOD (1.6)
A	F_UNCLASSIFIED	e7n4vA1	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF22314	e7n4vA4	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: PF22314	ECOD (1.6)
B	PF02460	e7n4vB2	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: PF02460	ECOD (1.6)
B	PF12349	e7n4vB3	A: alpha bundles	X: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	H: Multidrug efflux transporter AcrB transmembrane domain (From Topology)	T: Multidrug efflux transporter AcrB transmembrane domain	F: PF12349	ECOD (1.6)
B	F_UNCLASSIFIED	e7n4vB1	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF22314	e7n4vB4	A: a+b two layers	X: Alpha-beta plaits	H: Ferredoxin domains in multidrug efflux transporter	T: Multidrug efflux transporter AcrB pore domain	F: PF22314	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF12349	Sterol-sensing domain of SREBP cleavage-activation (Sterol-sensing)	Sterol-sensing domain of SREBP cleavage-activation	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Isoform 2 of NPC1-like intracellular cholesterol transporter 1	small GTPase binding protein binding binding enzyme binding GTPase binding identical protein binding protein homodimerization activity protein dimerization activity sterol binding organic cyclic compound binding alcohol binding steroid binding lipid binding cholesterol binding small GTPase binding protein binding binding enzyme binding GTPase binding identical protein binding protein homodimerization activity protein dimerization activity sterol binding organic cyclic compound binding alcohol binding steroid binding lipid binding cholesterol binding small molecule binding cytoskeletal protein binding myosin V binding myosin binding vitamin binding heterocyclic compound binding vitamin E binding	localization transport vitamin transport establishment of localization intestinal lipid absorption multicellular organismal process digestion system process intestinal absorption digestive system process intestinal cholesterol absorption lipid digestion organic cyclic compound metabolic process vitamin E metabolic process localization transport vitamin transport establishment of localization intestinal lipid absorption multicellular organismal process digestion system process intestinal absorption digestive system process intestinal cholesterol absorption lipid digestion organic cyclic compound metabolic process vitamin E metabolic process organic substance metabolic process fat-soluble vitamin metabolic process organic hydroxy compound metabolic process metabolic process small molecule metabolic process vitamin metabolic process organonitrogen compound metabolic process lipoprotein metabolic process primary metabolic process protein metabolic process macromolecule metabolic process cellular response to stimulus cellular response to stress response to stimulus cellular response to sterol depletion response to stress cellular process response to sterol depletion macromolecule localization organic substance transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport sterol homeostasis chemical homeostasis homeostatic process cholesterol homeostasis lipid homeostasis sterol metabolic process steroid metabolic process cholesterol metabolic process lipid biosynthetic process alcohol metabolic process organic substance biosynthetic process steroid biosynthetic process secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process secondary alcohol metabolic process biosynthetic process sterol biosynthetic process organic hydroxy compound biosynthetic process organic cyclic compound biosynthetic process alcohol biosynthetic process lipid metabolic process	membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle organelle cytoplasm vesicle organelle membrane membrane-bounded organelle intracellular anatomical structure membrane intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle organelle cytoplasm vesicle organelle membrane cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR003392	Protein patched/dispatched	Family
A, B	IPR032190	Niemann-Pick C1, N-terminal	Domain
A, B	IPR000731	Sterol-sensing domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: Q9UHC9	sitosterolemia facioscapulohumeral muscular dystrophy Familial hypercholesterolemia - homozygous malignant pancreatic neoplasm pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia familial hyperlipidemia ovarian cancer pancreatic intraductal papillary-mucinous carcinoma ulcerative colitis

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B	OPM	Transmembrane	Alpha-helical polytopic	Resistance-nodulation-cell division	Patched family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A, B	PDBTM	Annotated as membrane protein by PDBTM

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, B	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Sterol-Sensing Domain (SSD) Proteins	Niemann-Pick C1-Like 1 (NPC1L1) cholesterol intracellular transporter

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.