Annotations: 1AKN

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1akna_	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	Acetylcholinesterase-like	Bile-salt activated lipase (cholesterol esterase)	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	alpha/beta-Hydrolases	8032487	3000102	SCOP2B (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		e1aknA1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: Abhydrolase_1	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00135	Carboxylesterase family (COesterase)	Carboxylesterase family		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	BILE-SALT ACTIVATED LIPASE	retinyl-palmitate esterase activity hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity hydrolase activity catalytic activity short-chain carboxylesterase activity acetylesterase activity sterol ester esterase activity lipase activity triacylglycerol lipase activity	multicellular organismal process regulation of body fluid levels system process secretion by tissue pancreatic juice secretion digestive system process secretion transport biological regulation establishment of localization body fluid secretion localization digestion regulation of biological quality multicellular organismal process regulation of body fluid levels system process secretion by tissue pancreatic juice secretion digestive system process secretion transport biological regulation establishment of localization body fluid secretion localization digestion regulation of biological quality ceramide metabolic process sphingolipid catabolic process lipid catabolic process catabolic process ceramide catabolic process sphingolipid metabolic process primary metabolic process metabolic process cellular process lipid metabolic process	cellular anatomical structure membrane extracellular region intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR019826	Carboxylesterase type B, active site	Active Site
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A	IPR002018	Carboxylesterase, type B	Domain
A	IPR051093	Neuroligin and Bile salt-activated lipase	Family
A	IPR019819	Carboxylesterase type B, conserved site	Conserved Site

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A	OPM	Monotopic/peripheral	Alpha/Beta monotopic/peripheral	Alpha/beta-hydrolases	Acetylcholinesterase-like

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.