1FUI | pdb_00001fui

L-FUCOSE ISOMERASE FROM ESCHERICHIA COLI

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	d1fuia1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
A	d1fuia2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d1fuib1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d1fuib2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
C	d1fuic1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
C	d1fuic2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
D	d1fuid1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
D	d1fuid2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
E	d1fuie1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
E	d1fuie2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
F	d1fuif1	All beta proteins	Reductase/isomerase/elongation factor common domain	FucI/AraA C-terminal domain-like	L-fucose isomerase, C-terminal domain	L-fucose isomerase, C-terminal domain	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
F	d1fuif2	Alpha and beta proteins (a/b)	FucI/AraA N-terminal and middle domains	FucI/AraA N-terminal and middle domains	L-fucose isomerase, N-terminal and second domains	L-fucose isomerase, N-terminal and second domains	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	L-fucose isomerase, N-terminal and second domains	8020715	4000816	SCOP2 (2022-06-29)
A	SCOP2 Family	L-fucose isomerase, C-terminal domain	8029690	4002083	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	FucI/AraA C-terminal domain-like	8042069	3000804	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	FucI/AraA N-terminal and middle domains	8033095	3001543	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	Fucose_iso_C	e1fuiA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
A	Fucose_iso_N1	e1fuiA2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
A	Fucose_iso_N2	e1fuiA3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)
B	Fucose_iso_C	e1fuiB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
B	Fucose_iso_N1	e1fuiB3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
B	Fucose_iso_N2	e1fuiB2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)
C	Fucose_iso_C	e1fuiC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
C	Fucose_iso_N1	e1fuiC3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
C	Fucose_iso_N2	e1fuiC2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)
D	Fucose_iso_C	e1fuiD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
D	Fucose_iso_N1	e1fuiD3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
D	Fucose_iso_N2	e1fuiD2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)
E	Fucose_iso_C	e1fuiE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
E	Fucose_iso_N1	e1fuiE3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
E	Fucose_iso_N2	e1fuiE2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)
F	Fucose_iso_C	e1fuiF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Fucose_iso_C	ECOD (1.6)
F	Fucose_iso_N1	e1fuiF3	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N1	ECOD (1.6)
F	Fucose_iso_N2	e1fuiF2	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: L-fucose isomerase, N-terminal and second domains	F: Fucose_iso_N2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
A	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)
B	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
B	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
B	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)
C	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
C	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
C	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)
D	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
D	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
D	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)
E	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
E	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
E	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)
F	3.40.50.1070	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
F	3.40.275.10	Alpha Beta	3-Layer(aba) Sandwich	L-fucose Isomerase	Chain A, domain 2	CATH (4.3.0)
F	3.20.14.10	Alpha Beta	Alpha-Beta Barrel	L-fucose Isomerase	Chain A, domain 3	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF07881	L-fucose isomerase, first N-terminal domain (Fucose_iso_N1)	L-fucose isomerase, first N-terminal domain	The members of this family are similar to L-fucose isomerase expressed by E. coli (Swiss:P11552, EC:5.3.1.3). This enzyme corresponds to glucose-6-phosphate isomerase in glycolysis, and converts an aldo-hexose to a ketose to prepare it for aldol cle ...	The members of this family are similar to L-fucose isomerase expressed by E. coli (Swiss:P11552, EC:5.3.1.3). This enzyme corresponds to glucose-6-phosphate isomerase in glycolysis, and converts an aldo-hexose to a ketose to prepare it for aldol cleavage. The enzyme is a hexamer, with each subunit being wedge-shaped and composed of three domains. Both domains 1 and 2 contain central parallel beta-sheets with surrounding alpha helices. Domain 1 demonstrates the beta-alpha-beta-alpha- beta Rossman fold. The active centre is shared between pairs of subunits related along the molecular three-fold axis, with domains 2 and 3 from one subunit providing most of the substrate-contacting residues, and domain 1 from the adjacent subunit contributing some other residues [1].	Domain
A, B, C, D, E A, B, C, D, E, F	PF07882	L-fucose isomerase, second N-terminal domain (Fucose_iso_N2)	L-fucose isomerase, second N-terminal domain	The members of this family are similar to L-fucose isomerase expressed by E. coli (Swiss:P11552, EC:5.3.1.3). This enzyme corresponds to glucose-6-phosphate isomerase in glycolysis, and converts an aldo-hexose to a ketose to prepare it for aldol clea ...	The members of this family are similar to L-fucose isomerase expressed by E. coli (Swiss:P11552, EC:5.3.1.3). This enzyme corresponds to glucose-6-phosphate isomerase in glycolysis, and converts an aldo-hexose to a ketose to prepare it for aldol cleavage. The enzyme is a hexamer, with each subunit being wedge-shaped and composed of three domains. Both domains 1 and 2 contain central parallel beta- sheets with surrounding alpha helices. The active centre is shared between pairs of subunits related along the molecular three-fold axis, with domains 2 and 3 from one subunit providing most of the substrate-contacting residues [1].	Domain
A, B, C, D, E A, B, C, D, E, F	PF02952	L-fucose isomerase, C-terminal domain (Fucose_iso_C)	L-fucose isomerase, C-terminal domain	L-fucose isomerase (5.3.1.25) converts the aldose L-fucose into the corresponding ketose L-fuculose during the first step in fucose metabolism using Mn2+ as a cofactor. The enzyme is a hexamer, forming the largest structurally known ketol isomerase, ...	L-fucose isomerase (5.3.1.25) converts the aldose L-fucose into the corresponding ketose L-fuculose during the first step in fucose metabolism using Mn2+ as a cofactor. The enzyme is a hexamer, forming the largest structurally known ketol isomerase, and each protomer consists of three domains. This entry represents the C-terminal domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	L-FUCOSE ISOMERASE	isomerase activity intramolecular oxidoreductase activity, interconverting aldoses and ketoses intramolecular oxidoreductase activity arabinose isomerase activity catalytic activity cation binding manganese ion binding transition metal ion binding ion binding binding metal ion binding small molecule binding L-fucose isomerase activity identical protein binding isomerase activity intramolecular oxidoreductase activity, interconverting aldoses and ketoses intramolecular oxidoreductase activity arabinose isomerase activity catalytic activity cation binding manganese ion binding transition metal ion binding ion binding binding metal ion binding small molecule binding L-fucose isomerase activity identical protein binding protein binding	monosaccharide metabolic process carbohydrate metabolic process catabolic process hexose catabolic process carbohydrate catabolic process hexose metabolic process primary metabolic process fucose metabolic process L-fucose metabolic process fucose catabolic process L-fucose catabolic process small molecule metabolic process metabolic process cellular process monosaccharide metabolic process carbohydrate metabolic process catabolic process hexose catabolic process carbohydrate catabolic process hexose metabolic process primary metabolic process fucose metabolic process L-fucose metabolic process fucose catabolic process L-fucose catabolic process small molecule metabolic process metabolic process cellular process monosaccharide catabolic process small molecule catabolic process arabinose metabolic process arabinose catabolic process D-arabinose catabolic process D-arabinose metabolic process pentose metabolic process pentose catabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR038393	L-fucose isomerase, domain 3 superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR005763	L-fucose isomerase	Family
A, B, C, D, E A, B, C, D, E, F	IPR012889	L-fucose isomerase, N-terminal-2	Domain
A, B, C, D, E A, B, C, D, E, F	IPR009015	L-fucose isomerase, N-terminal/central domain superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR012888	L-fucose isomerase, N-terminal-1	Domain
A, B, C, D, E A, B, C, D, E, F	IPR015888	L-fucose isomerase, C-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR038391	L-fucose isomerase, domain 1 superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR038392	L-fucose isomerase, domain 2 superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR004216	L-fucose/L-arabinose isomerase, C-terminal	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A	L-fucose isomerase M-CSA #95	L-fuctose isomerase, also known as arabinose isomerase (EC 5.3.1.3) uses both L-fucose and arabinose as substrates, converting the aldo-hexoses to ketoses to prepare them for aldol cleavage within the L-fucose metabolism pathway. The enzyme binds the closed form of the sugar and catalyses ring opening to generate a form of open-chain conformation that facilitates the isomerisation reaction, which proceeds via an ene-diol mechanism	Defined by 3 residues: GLU:A-337ASP:A-361HIS:A-528 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 5.3.1.3 (PDB Primary Data) Search M-CSA Motif + EC 5.3.1.3 EC: 5.3.1.25 (UniProt) Search M-CSA Motif + EC 5.3.1.25

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.