1B66

6-PYRUVOYL TETRAHYDROPTERIN SYNTHASE

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	d1b66a_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	6-pyruvoyl tetrahydropterin synthase	6-pyruvoyl tetrahydropterin synthase	black rat (Rattus rattus ) [TaxId: 10117 ],	SCOPe (2.08)
B	d1b66b_	Alpha and beta proteins (a+b)	T-fold	Tetrahydrobiopterin biosynthesis enzymes-like	6-pyruvoyl tetrahydropterin synthase	6-pyruvoyl tetrahydropterin synthase	black rat (Rattus rattus ) [TaxId: 10117 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	6-pyruvoyl tetrahydropterin synthase	8023463	4001717	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035843	3000283	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Tetrahydrobiopterin biosynthesis enzymes-like	8035843	3000283	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	PTPS	e1b66A1	A: a+b two layers	X: T-fold	H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology)	T: Tetrahydrobiopterin biosynthesis enzymes-like	F: PTPS	ECOD (1.6)
B	PTPS	e1b66B1	A: a+b two layers	X: T-fold	H: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology)	T: Tetrahydrobiopterin biosynthesis enzymes-like	F: PTPS	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.479.10	Alpha Beta	2-Layer Sandwich	Tetrahydropterin Synthase	Chain A	CATH (4.3.0)
B	3.30.479.10	Alpha Beta	2-Layer Sandwich	Tetrahydropterin Synthase	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01242	6-pyruvoyl tetrahydropterin synthase (PTPS)	6-pyruvoyl tetrahydropterin synthase	6-Pyruvoyl tetrahydrobiopterin synthase catalyses the conversion of dihydroneopterin triphosphate to 6-pyruvoyl tetrahydropterin, the second of three enzymatic steps in the synthesis of tetrahydrobiopterin from GTP. The functional enzyme is a hexamer ...	6-Pyruvoyl tetrahydrobiopterin synthase catalyses the conversion of dihydroneopterin triphosphate to 6-pyruvoyl tetrahydropterin, the second of three enzymatic steps in the synthesis of tetrahydrobiopterin from GTP. The functional enzyme is a hexamer of identical subunits [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	6-PYRUVOYL TETRAHYDROPTERIN SYNTHASE	cation binding ion binding binding metal ion binding small molecule binding identical protein binding protein binding carbon-oxygen lyase activity, acting on phosphates 6-pyruvoyltetrahydropterin synthase activity lyase activity catalytic activity carbon-oxygen lyase activity	polyol metabolic process small molecule biosynthetic process alcohol metabolic process diol biosynthetic process diol metabolic process biosynthetic process tetrahydrobiopterin biosynthetic process tetrahydrobiopterin metabolic process pteridine-containing compound biosynthetic process polyol biosynthetic process alcohol biosynthetic process metabolic process cellular process small molecule metabolic process polyol metabolic process small molecule biosynthetic process alcohol metabolic process diol biosynthetic process diol metabolic process biosynthetic process tetrahydrobiopterin biosynthetic process tetrahydrobiopterin metabolic process pteridine-containing compound biosynthetic process polyol biosynthetic process alcohol biosynthetic process metabolic process cellular process small molecule metabolic process pteridine-containing compound metabolic process	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure mitochondrion organelle cytoplasm intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR022469	6-pyruvoyl tetrahydropterin synthase, histidine active site	Active Site
A, B	IPR022470	6-pyruvoyl tetrahydropterin synthase, cysteine active site	Active Site
A, B	IPR038418	6-pyruvoyl tetrahydropterin synthase/QueD superfamily	Homologous Superfamily
A, B	IPR007115	6-pyruvoyl tetrahydropterin synthase/QueD family	Family

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

Chains	Enzyme Name	Description	Catalytic Residues
A, B	6-pyruvoyltetrahydropterin synthase M-CSA #84	The enzyme 6-pyruvoyl tetrahyropterin synthase catalyses the second of three steps in the de novo biosynthesis of tetrahydrobiopterin, the conversion of dihydroneopterin triphosphate to 6-pyruvoyl tetrahyropterin. Tetrahydrobiopterin is the natural cofactor for several enzymes such as phenylalanine hydroxylase, tyrosine hydroxylase and tryptophan hydroxylase, nitric oxide synthase and glycerol ether monooxygenase. Lack of tetrahydrobiopterin leads to hyperphenylalaninaemia and a deficiency of the biogenic amine neurotransmitters, dopamine and serotonin and is accompanied by severe progressive mental retardation.	Defined by 7 residues: HIS:A-19 [auth A-23]CYS:A-38 [auth A-42]HIS:A-44 [auth A-48]HIS:A-46 [auth A-50]GLU:A-129 [auth A-133]ASP:B_6-84 [auth B_6-88]HIS:B_6-85 [auth B_6-89] \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 4.6.1.10 (PDB Primary Data) Search M-CSA Motif + EC 4.6.1.10 EC: 4.2.3.12 (UniProt) Search M-CSA Motif + EC 4.2.3.12

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.