Annotations: 2JQ3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Apo-CIII	e2jq3A1	A: extended segments	X: Apolipoprotein C-III (From Topology)	H: Apolipoprotein C-III (From Topology)	T: Apolipoprotein C-III	F: Apo-CIII	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.90.10	Special	Helix non-globular	NK-Lysin	Apolipoprotein CIII	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF05778	Apolipoprotein CIII (Apo-CIII) (Apo-CIII)	Apolipoprotein CIII (Apo-CIII)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Apolipoprotein C-III	sterol binding binding organic cyclic compound binding alcohol binding steroid binding lipid binding cholesterol binding small molecule binding high-density lipoprotein particle receptor binding protein binding signaling receptor binding lipoprotein particle receptor binding enzyme regulator activity molecular function regulator activity sterol binding binding organic cyclic compound binding alcohol binding steroid binding lipid binding cholesterol binding small molecule binding high-density lipoprotein particle receptor binding protein binding signaling receptor binding lipoprotein particle receptor binding enzyme regulator activity molecular function regulator activity phospholipid binding molecular function inhibitor activity enzyme inhibitor activity lipase inhibitor activity	localization transport macromolecule localization reverse cholesterol transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport establishment of localization phospholipid transport organophosphate ester transport phospholipid efflux cellular response to stimulus localization transport macromolecule localization reverse cholesterol transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport establishment of localization phospholipid transport organophosphate ester transport phospholipid efflux cellular response to stimulus regulation of biological process regulation of signaling regulation of cellular process small GTPase-mediated signal transduction response to stimulus signaling regulation of small GTPase mediated signal transduction biological regulation regulation of signal transduction regulation of Cdc42 protein signal transduction regulation of Rho protein signal transduction intracellular signal transduction Rho protein signal transduction Cdc42 protein signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication cellular process signal transduction chemical homeostasis homeostatic process triglyceride homeostasis acylglycerol homeostasis lipid homeostasis sterol homeostasis cholesterol homeostasis neutral lipid metabolic process negative regulation of triglyceride metabolic process catabolic process regulation of triglyceride metabolic process regulation of lipid metabolic process glycerolipid catabolic process negative regulation of biological process regulation of primary metabolic process triglyceride catabolic process triglyceride metabolic process negative regulation of cellular process negative regulation of lipid catabolic process negative regulation of catabolic process lipid catabolic process neutral lipid catabolic process negative regulation of metabolic process negative regulation of triglyceride catabolic process primary metabolic process acylglycerol catabolic process regulation of catabolic process regulation of lipid catabolic process metabolic process glycerolipid metabolic process acylglycerol metabolic process regulation of metabolic process regulation of triglyceride catabolic process negative regulation of lipid metabolic process lipid metabolic process regulation of localization import into cell regulation of cellular component organization negative regulation of transport negative regulation of endocytosis vesicle-mediated transport cellular component organization cellular component organization or biogenesis regulation of endocytosis negative regulation of cellular component organization negative regulation of receptor-mediated endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport endocytosis receptor-mediated endocytosis negative regulation of sterol transport regulation of lipid transport negative regulation of lipid localization regulation of cholesterol transport negative regulation of cholesterol import regulation of sterol transport negative regulation of lipid transport negative regulation of cholesterol transport regulation of cholesterol import regulation of lipid localization cholesterol import multicellular organismal process regulation of plasma lipoprotein particle levels regulation of low-density lipoprotein particle clearance negative regulation of low-density lipoprotein particle clearance plasma lipoprotein particle clearance negative regulation of lipoprotein particle clearance regulation of lipoprotein particle clearance regulation of multicellular organismal process low-density lipoprotein particle clearance negative regulation of multicellular organismal process very-low-density lipoprotein particle clearance negative regulation of very-low-density lipoprotein particle clearance regulation of very-low-density lipoprotein particle clearance cholesterol efflux protein-containing complex remodeling protein-lipid complex organization very-low-density lipoprotein particle remodeling protein-lipid complex remodeling negative regulation of very-low-density lipoprotein particle remodeling plasma lipoprotein particle organization protein-containing complex organization plasma lipoprotein particle remodeling regulation of very-low-density lipoprotein particle remodeling triglyceride-rich lipoprotein particle remodeling lipoprotein metabolic process protein metabolic process macromolecule metabolic process very-low-density lipoprotein particle assembly cellular component biogenesis cellular component assembly protein-containing complex assembly plasma lipoprotein particle assembly protein-lipid complex assembly high-density lipoprotein particle remodeling chylomicron remnant clearance triglyceride-rich lipoprotein particle clearance regulation of high-density lipoprotein particle clearance negative regulation of high-density lipoprotein particle clearance high-density lipoprotein particle clearance G protein-coupled receptor signaling pathway negative regulation of small molecule metabolic process oxoacid metabolic process ketone metabolic process lipid biosynthetic process organic acid metabolic process organic acid biosynthetic process negative regulation of lipid biosynthetic process carboxylic acid biosynthetic process regulation of small molecule metabolic process small molecule metabolic process negative regulation of fatty acid biosynthetic process regulation of biosynthetic process fatty acid metabolic process negative regulation of fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process carboxylic acid metabolic process fatty acid biosynthetic process regulation of ketone metabolic process biosynthetic process negative regulation of biosynthetic process regulation of fatty acid metabolic process regulation of fatty acid biosynthetic process regulation of lipid biosynthetic process monocarboxylic acid metabolic process negative regulation of hydrolase activity regulation of catalytic activity negative regulation of lipase activity negative regulation of molecular function negative regulation of catalytic activity regulation of lipoprotein lipase activity negative regulation of lipoprotein lipase activity regulation of molecular function regulation of hydrolase activity regulation of lipase activity	extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix extracellular exosome membrane-bounded organelle extracellular vesicle cellular anatomical structure extracellular organelle extracellular region organelle extracellular space vesicle extracellular membrane-bounded organelle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix spherical high-density lipoprotein particle protein-containing complex plasma lipoprotein particle high-density lipoprotein particle lipoprotein particle protein-lipid complex intracellular anatomical structure early endosome endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle cytoplasm chylomicron intermediate-density lipoprotein particle triglyceride-rich plasma lipoprotein particle very-low-density lipoprotein particle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR008403	Apolipoprotein CIII	Family
A	IPR038195	Apolipoprotein CIII superfamily	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	Pharos: P02656	apolipoprotein c-III deficiency coronary artery disease non-alcoholic fatty liver disease cardiovascular disease Drug Eruptions familial hypercholesterolemia inherited lipid metabolism disorder psoriasis abdominal aortic aneurysm atherosclerosis familial hyperlipidemia lung benign neoplasm metabolic disease heart disease hyperlipoproteinemia apolipoprotein c-III deficiency coronary artery disease non-alcoholic fatty liver disease cardiovascular disease Drug Eruptions familial hypercholesterolemia inherited lipid metabolism disorder psoriasis abdominal aortic aneurysm atherosclerosis familial hyperlipidemia lung benign neoplasm metabolic disease heart disease hyperlipoproteinemia hypertrophic pyloric stenosis metabolic syndrome X periodic fever syndrome cholesterol-ester transfer protein deficiency hyperalphalipoproteinemia

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Monotopic/peripheral	All alpha monotopic/peripheral	Alpha-helical (HDL) apolipoproteins	Apolipoprotein C-III

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.