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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1jr2a_ Alpha and beta proteins (a/b) HemD-like HemD-like HemD-like Uroporphyrinogen III synthase (U3S, HemD) human (Homo sapiens ) [TaxId: 9606 ], SCOPe (2.08)
Bd1jr2b_ Alpha and beta proteins (a/b) HemD-like HemD-like HemD-like Uroporphyrinogen III synthase (U3S, HemD) human (Homo sapiens ) [TaxId: 9606 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyHemD-like 8024889 4003361 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyHemD-like 8037268 3000689 SCOP2 (2022-06-29)
BSCOP2B SuperfamilyHemD-like 8037268 3000689 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AHEM4e1jr2A1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Uroporphyrinogen III synthase (U3S, HemD)F: HEM4ECOD (1.6)
AHEM4_1e1jr2A2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Uroporphyrinogen III synthase (U3S, HemD)F: HEM4_1ECOD (1.6)
BHEM4e1jr2B1 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Uroporphyrinogen III synthase (U3S, HemD)F: HEM4ECOD (1.6)
BHEM4_1e1jr2B2 A: a/b three-layered sandwichesX: Flavodoxin-likeH: Class I glutamine amidotransferase-likeT: Uroporphyrinogen III synthase (U3S, HemD)F: HEM4_1ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.50.10090 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold CATH (4.3.0)
B3.40.50.10090 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF02602Uroporphyrinogen-III synthase HemD (HEM4)Uroporphyrinogen-III synthase HemD- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
UROPORPHYRINOGEN-III SYNTHASE

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

ChainsEnzyme NameDescriptionCatalytic Residues
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uroporphyrinogen-III synthase  M-CSA #204

uroporphyrinogen III synthase (URO3S) catalyses the conversion of hydroxymethylbilane (HMB) to uroporphyrinogen III, a reaction involving ring closure and intramolecular rearrangement in which the inversion of the final pyrrole unit (ring D) of the linear tetrapyrrole molecule is linked to the first pyrrole unit (ring A). Uroporphyrinogen III represents a branch point for the pathways leading to formation of a wide variety of porphyrins, including heme, chlorophyll and corrins. Porphyrins act as cofactors for a multitude of enzymes that perform a variety of processes within the cell such as methionine synthesis (vitamin B12) or oxygen transport (heme). Deficiencies of URO3S in vivo are associated with congenital erythropoietic porphyria.

No annotated residues.
Motifs without residues cannot be visualized.
At least 2 residues must be present to support Structure Motif searching.