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 2AR8 | pdb_00002ar8

The structure of tryptophan 7-halogenase (PrnA)suggests a mechanism for regioselective chlorination

External Resource: Annotation


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
ASRP_SPBe2ar8A1 A: alpha arraysX: CARF (CRISPR-associated Rossmann fold) domainsH: HTHT: winged helix domainF: SRP_SPBECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.50.50.60 Alpha Beta 3-Layer(bba) Sandwich FAD/NAD(P)-binding domain FAD/NAD(P)-binding domainCATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
tryptophan halogenase PrnA - -

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR050816FAD-dependent halogenaseFamily
IPR036188FAD/NAD(P)-binding domain superfamilyHomologous Superfamily
IPR006905Flavin-dependent halogenaseFamily
IPR033856Flavin-dependent tryptophan halogenaseFamily

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

ChainsEnzyme NameDescriptionCatalytic Residues
tryptophan 7-halogenase  M-CSA #977

Tryptophan 7-halogenase catalyses the chlorination of free tryptophan to 7-chlorotryptophan, which is the first step in the synthesis of the antibiotic pyrrolnitrin. Enzyme-catalysed chlorination of organic compounds in the laboratory remains a challenge, thus understanding the reaction mechanism of tryptophan 7-halogenase is important.

Defined by 2 residues: LYS:A-79GLU:A-346
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Explore in 3D: M-CSA Motif Definition
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EC: 1.14.19.9 (UniProt)