Annotations: 3S84

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Apolipoprotein	8058280	3001489	SCOP2B (2022-06-29)
B	SCOP2 Family	Apolipoprotein	8058279	4000807	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Apolipoprotein	8058280	3001489	SCOP2 (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	Apolipoprotein	e3s84A1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Apolipoprotein (From Topology)	T: Apolipoprotein	F: Apolipoprotein	ECOD (1.6)
B	Apolipoprotein	e3s84B1	A: alpha bundles	X: Four-helical up-and-down bundle	H: Apolipoprotein (From Topology)	T: Apolipoprotein	F: Apolipoprotein	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.250.2890	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
A	1.20.120.20	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Apolipoprotein	CATH (4.3.0)
B	6.10.250.2890	Special	Helix non-globular	Single alpha-helices involved in coiled-coils or other helix-helix interfaces		CATH (4.3.0)
B	1.20.120.20	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Apolipoprotein	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01442	Apolipoprotein A1/A4/E domain (Apolipoprotein)	Apolipoprotein A1/A4/E domain	These proteins contain several 22 residue repeats which form a pair of alpha helices. This family includes: Swiss:P02647 Apolipoprotein A-I. Swiss:P06727 Apolipoprotein A-IV. Swiss:P02649 Apolipoprotein E.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Apolipoprotein A-IV	cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding phospholipid binding lipid binding sterol transfer activity lipid transporter activity lipid transfer activity transporter activity cholesterol transfer activity cation binding transition metal ion binding copper ion binding ion binding binding metal ion binding small molecule binding phospholipid binding lipid binding sterol transfer activity lipid transporter activity lipid transfer activity transporter activity cholesterol transfer activity phosphatidylcholine binding quaternary ammonium group binding identical protein binding protein binding enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity phosphatidylcholine-sterol O-acyltransferase activator activity antioxidant activity protein homodimerization activity protein dimerization activity	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-lipid complex organization protein-containing complex assembly cellular process protein-lipid complex assembly cellular component organization or biogenesis catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process hydrogen peroxide catabolic process cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-lipid complex organization protein-containing complex assembly cellular process protein-lipid complex assembly cellular component organization or biogenesis catabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process hydrogen peroxide catabolic process localization transport macromolecule localization reverse cholesterol transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport establishment of localization plasma lipoprotein particle organization multicellular organismal process regulation of biological process biological regulation chylomicron assembly regulation of plasma lipoprotein particle levels plasma lipoprotein particle assembly regulation of CoA-transferase activity regulation of molecular function positive regulation of molecular function positive regulation of transferase activity regulation of catalytic activity positive regulation of CoA-transferase activity positive regulation of catalytic activity regulation of transferase activity regulation of cellular process oxoacid metabolic process ketone metabolic process regulation of lipid metabolic process positive regulation of biological process lipid biosynthetic process organic acid biosynthetic process organic acid metabolic process carboxylic acid biosynthetic process regulation of primary metabolic process positive regulation of fatty acid biosynthetic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of biosynthetic process positive regulation of lipid metabolic process small molecule metabolic process positive regulation of cellular process positive regulation of fatty acid metabolic process regulation of biosynthetic process fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process primary metabolic process fatty acid biosynthetic process regulation of ketone metabolic process biosynthetic process positive regulation of lipid biosynthetic process regulation of fatty acid metabolic process regulation of fatty acid biosynthetic process monocarboxylic acid metabolic process regulation of lipid biosynthetic process positive regulation of small molecule metabolic process regulation of metabolic process lipid metabolic process glycerophospholipid metabolic process phospholipid metabolic process organophosphate metabolic process phosphate-containing compound metabolic process phosphatidylcholine metabolic process glycerolipid metabolic process phosphorus metabolic process protein-containing complex remodeling plasma lipoprotein particle remodeling triglyceride-rich lipoprotein particle remodeling very-low-density lipoprotein particle remodeling protein-lipid complex remodeling neutral lipid metabolic process regulation of triglyceride metabolic process positive regulation of triglyceride metabolic process glycerolipid catabolic process triglyceride catabolic process positive regulation of lipid catabolic process triglyceride metabolic process lipid catabolic process neutral lipid catabolic process acylglycerol catabolic process regulation of catabolic process regulation of lipid catabolic process positive regulation of catabolic process positive regulation of triglyceride catabolic process acylglycerol metabolic process regulation of triglyceride catabolic process positive regulation of lipoprotein lipase activity regulation of lipoprotein lipase activity positive regulation of lipase activity positive regulation of triglyceride lipase activity positive regulation of hydrolase activity regulation of hydrolase activity regulation of lipase activity cholesterol efflux response to oxidative stress response to stimulus response to lipid response to stress response to chemical response to oxygen-containing compound response to lipid hydroperoxide response to hydroperoxide cell adhesion cell-cell adhesion leukocyte cell-cell adhesion regulation of cellular component organization negative regulation of biological process regulation of plasma lipoprotein oxidation negative regulation of cellular process regulation of multicellular organismal process negative regulation of cellular component organization negative regulation of plasma lipoprotein oxidation negative regulation of multicellular organismal process plasma lipoprotein particle oxidation system process regulation of intestinal absorption digestive system process regulation of system process lipid digestion regulation of digestive system process intestinal lipid absorption digestion intestinal absorption regulation of intestinal lipid absorption intestinal cholesterol absorption regulation of intestinal cholesterol absorption chylomicron remodeling cellular response to stimulus cellular developmental process cell projection organization cell development neuron projection development regeneration response to axon injury neuron projection regeneration neurogenesis multicellular organism development axon regeneration neuron differentiation cellular response to stress cell differentiation anatomical structure development response to wounding peripheral nervous system axon regeneration system development developmental process plasma membrane bounded cell projection organization nervous system development axon development generation of neurons neuron development cellular response to oxidative stress detoxification cellular response to chemical stress response to superoxide cellular oxidant detoxification cellular response to oxygen radical cellular response to reactive oxygen species cellular detoxification cellular response to oxygen-containing compound response to reactive oxygen species response to toxic substance removal of superoxide radicals superoxide metabolic process cellular response to chemical stimulus cellular response to superoxide cellular response to toxic substance response to oxygen radical phospholipid transport organophosphate ester transport phospholipid efflux response to triglyceride chemical homeostasis homeostatic process lipid homeostasis sterol homeostasis cholesterol homeostasis organic hydroxy compound metabolic process sterol metabolic process steroid metabolic process cholesterol metabolic process alcohol metabolic process secondary alcohol metabolic process response to stilbenoid response to organic cyclic compound biological process involved in interspecies interaction between organisms innate immune response in mucosa immune response response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus immune system process defense response to other organism innate immune response response to external biotic stimulus mucosal immune response organ or tissue specific immune response regulation of sterol transport regulation of localization regulation of transport regulation of lipid transport regulation of lipid localization regulation of cholesterol transport lipoprotein metabolic process protein metabolic process macromolecule metabolic process high-density lipoprotein particle remodeling acylglycerol homeostasis	protein-containing complex cellular anatomical structure extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space lipoprotein particle protein-lipid complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle protein-containing complex cellular anatomical structure extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space lipoprotein particle protein-lipid complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix intracellular anatomical structure cytoplasm cytosol membrane-enclosed lumen intracellular membrane-bounded organelle endomembrane system intracellular organelle lumen endoplasmic reticulum lumen intracellular organelle organelle lumen endoplasmic reticulum early endosome endosome intracellular vesicle cytoplasmic vesicle blood microparticle chylomicron low-density lipoprotein particle synapse cell junction very-low-density lipoprotein particle triglyceride-rich plasma lipoprotein particle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050163	Apolipoprotein A1/A4/E	Family
A, B	IPR000074	Apolipoprotein A/E	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P06727	Liver Cirrhosis, Experimental schizophrenia atherosclerosis familial hypercholesterolemia metabolic disease pancreatic ductal adenocarcinoma abdominal aortic aneurysm malignant glioma metabolic syndrome X medullary thyroid gland carcinoma non-alcoholic fatty liver disease arteriosclerosis disorder heart disease hypertrophic pyloric stenosis

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.