Annotations: 1BS9

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1bs9a_	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	Cutinase-like	Acetylxylan esterase	(Talaromyces purpureogenus ) [TaxId: 1266744 ],	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	8044113	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	PF01083	e1bs9A1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: PF01083	ECOD (1.6)

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	PF01083	Cutinase (Cutinase)	Cutinase	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ACETYL XYLAN ESTERASE	hydrolase activity, acting on ester bonds carboxylic ester hydrolase activity acetylxylan esterase activity hydrolase activity catalytic activity	carbohydrate metabolic process xylan catabolic process catabolic process hemicellulose metabolic process cell wall organization or biogenesis carbohydrate catabolic process hemicellulose catabolic process primary metabolic process macromolecule catabolic process cell wall macromolecule catabolic process xylan metabolic process polysaccharide metabolic process organic substance metabolic process polysaccharide catabolic process carbohydrate metabolic process xylan catabolic process catabolic process hemicellulose metabolic process cell wall organization or biogenesis carbohydrate catabolic process hemicellulose catabolic process primary metabolic process macromolecule catabolic process cell wall macromolecule catabolic process xylan metabolic process polysaccharide metabolic process organic substance metabolic process polysaccharide catabolic process metabolic process cellular process macromolecule metabolic process cell wall polysaccharide metabolic process organic substance catabolic process cell wall macromolecule metabolic process cell wall polysaccharide catabolic process glucan catabolic process beta-glucan metabolic process glucan metabolic process beta-glucan catabolic process cellulose catabolic process cellulose metabolic process	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000675	Cutinase/acetylxylan esterase	Family
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	acetylxylan esterase M-CSA #431	Enzymes which deacetylate the main component of plane cell wall hemicelluloses (xylan). Xylan is composed of a linear chain of beta(1-4)glycosidic-linked xylopyranoses, having various substitutions at carbon 2 and 3 positions (including acetyl groups). Biodegradation of xylan is a complex process catalysed by several fungal and bacterial enzymes. Although the linear chain is cleaved by endoxylanases and beta-xylosidases, acetylxylan esterases (AXE)1 hydrolyse O-acetyl substitutions of-xylopyranose moieties.	Defined by 5 residues: THR:A-13SER:A-90GLN:A-91ASP:A-175HIS:A-187 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.1.1.6 (PDB Primary Data) Search M-CSA Motif + EC 3.1.1.6

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.