Annotations: 4PW2

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF21174	e4pw2A2	A: beta sandwiches	X: jelly-roll	H: Galactose-binding domain-like (From Topology)	T: Galactose-binding domain-like	F: PF21174	ECOD (1.6)
A	PF06662	e4pw2A1	A: alpha superhelices	X: Repetitive alpha hairpins	H: alpha/alpha toroid (From Topology)	T: alpha/alpha toroid	F: PF06662	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF21174	D-glucuronyl C5-epimerase, beta-sandwich domain (Glce_b_sandwich)	D-glucuronyl C5-epimerase, beta-sandwich domain	This domain is found centrally in D-glucuronyl C5-epimerase from humans (Glce) and similar proteins involved in glycan metabolism and heparin biosynthesis in animals. Glce is essential for the reversible epimerisation of D-glucuronic acid (GlcA) into ...	This domain is found centrally in D-glucuronyl C5-epimerase from humans (Glce) and similar proteins involved in glycan metabolism and heparin biosynthesis in animals. Glce is essential for the reversible epimerisation of D-glucuronic acid (GlcA) into L-iduronic acid (IdoA), contributing to generate functional protein-binding motifs to ensure polymer function. This protein consists of three intertwined domains. This entry represents a classical beta-sandwich domain that consists predominantly of a convex four-stranded beta- -sheet and a concave seven-stranded beta-sheet. It is inserted between two of the helices of the C-terminal alpha-barrel domain (whose most C-terminal region is represented by Pfam:PF06662) [1,2].	Domain
A	PF06662	D-glucuronyl C5-epimerase C-terminus (C5-epim_C)	D-glucuronyl C5-epimerase C-terminus	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	D-glucuronyl C5 epimerase B	isomerase activity heparosan-N-sulfate-glucuronate 5-epimerase activity racemase and epimerase activity racemase and epimerase activity, acting on carbohydrates and derivatives catalytic activity cation binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding	carbohydrate derivative biosynthetic process mucopolysaccharide metabolic process organonitrogen compound metabolic process heparin metabolic process cellular biosynthetic process cellular metabolic process glycosaminoglycan metabolic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process heparin biosynthetic process macromolecule biosynthetic process sulfur compound biosynthetic process organic substance metabolic process biosynthetic process aminoglycan metabolic process carbohydrate derivative biosynthetic process mucopolysaccharide metabolic process organonitrogen compound metabolic process heparin metabolic process cellular biosynthetic process cellular metabolic process glycosaminoglycan metabolic process organonitrogen compound biosynthetic process carbohydrate derivative metabolic process heparin biosynthetic process macromolecule biosynthetic process sulfur compound biosynthetic process organic substance metabolic process biosynthetic process aminoglycan metabolic process organic substance biosynthetic process aminoglycan biosynthetic process sulfur compound metabolic process metabolic process cellular process glycosaminoglycan biosynthetic process macromolecule metabolic process proteoglycan biosynthetic process heparan sulfate proteoglycan biosynthetic process glycoprotein biosynthetic process primary metabolic process glycoprotein metabolic process protein metabolic process proteoglycan metabolic process	membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm cellular anatomical entity intracellular membrane-bounded organelle endomembrane system Golgi membrane membrane bounding membrane of organelle organelle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR039721	D-glucuronyl C5-epimerase	Family
A	IPR010598	D-glucuronyl C5-epimerase, C-terminal	Domain

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.