Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 Family6-pyruvoyl tetrahydropterin synthase 8023463 4001717 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyTetrahydrobiopterin biosynthesis enzymes-like 8035843 3000283 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyTetrahydrobiopterin biosynthesis enzymes-like 8035843 3000283 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APTPSe1b66A1 A: a+b two layersX: T-foldH: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology)T: Tetrahydrobiopterin biosynthesis enzymes-likeF: PTPSECOD (1.6)
BPTPSe1b66B1 A: a+b two layersX: T-foldH: Tetrahydrobiopterin biosynthesis enzymes-like (From Topology)T: Tetrahydrobiopterin biosynthesis enzymes-likeF: PTPSECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.30.479.10 Alpha Beta 2-Layer Sandwich Tetrahydropterin Synthase Chain ACATH (4.3.0)
B3.30.479.10 Alpha Beta 2-Layer Sandwich Tetrahydropterin Synthase Chain ACATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF012426-pyruvoyl tetrahydropterin synthase (PTPS)6-pyruvoyl tetrahydropterin synthase6-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

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
6-PYRUVOYL TETRAHYDROPTERIN SYNTHASE

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

ChainsEnzyme NameDescriptionCatalytic 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]
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