Annotations: 2XKL

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	ApoM domain-like	8045816	4004704	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Lipocalins	8052636	3001332	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	Biopterin_H	e2xklA1	A: a/b three-layered sandwiches	X: Globin-like	H: Globin-like	T: Globin-like	F: Biopterin_H	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.128.20	Mainly Beta	Beta Barrel	Lipocalin	Calycin beta-barrel core domain	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	APOLIPOPROTEIN M	antioxidant activity binding phospholipid binding lipid binding lipid carrier activity molecular carrier activity	plasma lipoprotein particle organization multicellular organismal process regulation of biological process protein-containing complex organization protein-lipid complex organization biological regulation regulation of plasma lipoprotein particle levels cellular component organization cellular component biogenesis cellular component assembly high-density lipoprotein particle assembly protein-containing complex assembly cellular process plasma lipoprotein particle assembly plasma lipoprotein particle organization multicellular organismal process regulation of biological process protein-containing complex organization protein-lipid complex organization biological regulation regulation of plasma lipoprotein particle levels cellular component organization cellular component biogenesis cellular component assembly high-density lipoprotein particle assembly protein-containing complex assembly cellular process plasma lipoprotein particle assembly protein-lipid complex assembly cellular component organization or biogenesis high-density lipoprotein particle clearance plasma lipoprotein particle clearance localization transport macromolecule localization reverse cholesterol transport lipid localization cholesterol transport lipid transport sterol transport organic hydroxy compound transport establishment of localization cholesterol efflux lipoprotein metabolic process metabolic process primary metabolic process protein metabolic process macromolecule metabolic process protein-containing complex remodeling plasma lipoprotein particle remodeling high-density lipoprotein particle remodeling protein-lipid complex remodeling regulation of cellular component organization regulation of cellular process 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	discoidal high-density lipoprotein particle protein-containing complex cellular anatomical structure extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular protein-containing complex lipoprotein particle protein-lipid complex low-density lipoprotein particle spherical high-density lipoprotein particle very-low-density lipoprotein particle triglyceride-rich plasma lipoprotein particle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR012674	Calycin	Homologous Superfamily
A	IPR022734	Apolipoprotein M	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.