1XLD

MECHANISM FOR ALDOSE-KETOSE INTERCONVERSION BY D-XYLOSE ISOMERASE INVOLVING RING OPENING FOLLOWED BY A 1,2-HYDRIDE SHIFT

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1xlda_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Xylose isomerase-like	Xylose isomerase	D-xylose isomerase	(Arthrobacter sp. NRRL B3728 ) [TaxId: 1669 ],	SCOPe (2.08)
B	d1xldb_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	Xylose isomerase-like	Xylose isomerase	D-xylose isomerase	(Arthrobacter sp. NRRL B3728 ) [TaxId: 1669 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Xylose isomerase-like	8043747	3000560	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Xylose isomerase-like	8043747	3000560	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	PF01261	e1xldA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: PF01261	ECOD (1.6)
B	PF01261	e1xldB1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: PF01261	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.150	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Divalent-metal-dependent TIM barrel enzymes	CATH (4.3.0)
B	3.20.20.150	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Divalent-metal-dependent TIM barrel enzymes	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01261	Xylose isomerase-like TIM barrel (AP_endonuc_2)	Xylose isomerase-like TIM barrel	This TIM alpha/beta barrel structure is found in xylose isomerase (Swiss:P19148) and in endonuclease IV (Swiss:P12638, EC:3.1.21.2). This domain is also found in the N termini of bacterial myo-inositol catabolism proteins. These are involved in the ...	This TIM alpha/beta barrel structure is found in xylose isomerase (Swiss:P19148) and in endonuclease IV (Swiss:P12638, EC:3.1.21.2). This domain is also found in the N termini of bacterial myo-inositol catabolism proteins. These are involved in the myo-inositol catabolism pathway, and is required for growth on myo-inositol in Rhizobium leguminosarum bv. viciae [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	D-XYLOSE ISOMERASE	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding isomerase activity intramolecular oxidoreductase activity, interconverting aldoses and ketoses intramolecular oxidoreductase activity xylose isomerase activity catalytic activity	monosaccharide metabolic process carbohydrate metabolic process organic substance metabolic process small molecule metabolic process metabolic process primary metabolic process D-xylose metabolic process pentose metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013022	Xylose isomerase-like, TIM barrel domain	Domain
A, B	IPR013453	Xylose isomerase, actinobacteria	Family
A, B	IPR036237	Xylose isomerase-like superfamily	Homologous Superfamily
A, B	IPR001998	Xylose isomerase	Family

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

Chains	Enzyme Name	Description	Catalytic Residues
A	xylose isomerase (actinobacterial) M-CSA #308	Xylose isomerase catalyses the interconvertion of D-xylose and D-xylulose. It contains two divalent metal ions, preferably magnesium, located at different metal-binding sites within the active site. The enzyme catalyses the interconversion of aldose and ketose sugars with broad substrate specificity. The enzyme binds the closed form of its sugar substrate (in the case of glucose, only the alpha anomer) and catalyses ring opening to generate a form of open-chain conformation that is coordinated to one of the metal sites.	Defined by 11 residues: HIS:A-53ASP:A-56MET:A-87GLU:A-180LYS:A-182GLU:A-216HIS:A-219ASP:A-244ASP:A-254ASP:A-256ASP:A-292 \| Explore in 3D: M-CSA Motif Definition Up to 10 residues are supported for Structure Motif searching, this motif has 11 residues. EC: 5.3.1.5 (PDB Primary Data)

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.