1B9L | pdb_00001b9l

7,8-DIHYDRONEOPTERIN TRIPHOSPHATE EPIMERASE

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

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1b9lb_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
H	d1b9lh_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
G	d1b9lg_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
F	d1b9lf_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
E	d1b9le_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
D	d1b9ld_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
C	d1b9lc_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d1b9la_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	DHN aldolase/epimerase	7,8-dihydroneopterin triphosphate epimerase	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
G	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
F	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2B (2022-06-29)
A	SCOP2 Family	DHN aldolase/epimerase	8023471	4001721	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035851	3000283	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	RF-1	e1b9lB1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
H	RF-1	e1b9lH1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
G	RF-1	e1b9lG1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
F	RF-1	e1b9lF1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
E	RF-1	e1b9lE1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
D	RF-1	e1b9lD1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
C	RF-1	e1b9lC1	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: RF-1	ECOD (v294.1)
A	FolB	e1b9lA1	A: a+b two layers	X: T-fold	H: Tetrahydrobiopterin biosynthesis enzymes-like	T: Tetrahydrobiopterin biosynthesis enzymes-like	F: FolB	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
H	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
G	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
F	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
E	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
D	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
C	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	CATH (4.3.0)
A	3.30.1130.10	Alpha Beta	2-Layer Sandwich	GTP Cyclohydrolase I, domain 2	GTP cyclohydrolase I, C-terminal domain/NADPH-dependent 7-cyano-7-deazaguanine reductase, N-terminal domain	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, G, H	PF02152	Dihydroneopterin aldolase (FolB)	Dihydroneopterin aldolase	This enzyme EC:4.1.2.25 catalyses the conversion of 7,8-dihydroneopterin to 6-hydroxymethyl-7,8-dihydropterin in the biosynthetic pathway of tetrahydrofolate.	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, G, H	PROTEIN (EPIMERASE)	isomerase activity racemase and epimerase activity dihydroneopterin triphosphate 2'-epimerase activity catalytic activity dihydroneopterin aldolase activity lyase activity carbon-carbon lyase activity aldehyde-lyase activity identical protein binding protein binding binding	folic acid-containing compound metabolic process modified amino acid metabolic process metabolic process cellular process pteridine-containing compound metabolic process biosynthetic process pteridine-containing compound biosynthetic 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, G, H	IPR006156	Dihydroneopterin aldolase	Family
A, B, C, D, E A, B, C, D, E, F, G, H	IPR006157	Dihydroneopterin aldolase/epimerase domain	Domain
A, B, C, D, E A, B, C, D, E, F, G, H	IPR043133	GTP cyclohydrolase I, C-terminal/NADPH-dependent 7-cyano-7-deazaguanine reductase	Homologous Superfamily

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.