2DE2

Crystal structure of desulfurization enzyme DSZB

External Resource: Annotation


Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AF_UNCLASSIFIEDe2de2A1 A: a/b three-layered sandwichesX: Periplasmic binding protein-like II (From Topology)H: Periplasmic binding protein-like II (From Topology)T: Periplasmic binding protein-like IIF: F_UNCLASSIFIEDECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.190.10 Alpha Beta 3-Layer(aba) Sandwich D-Maltodextrin-Binding Protein domain 2CATH (4.3.0)
A3.40.190.270 Alpha Beta 3-Layer(aba) Sandwich D-Maltodextrin-Binding Protein domain 2CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
DIBENZOTHIOPHENE DESULFURIZATION ENZYME B

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

ChainsEnzyme NameDescriptionCatalytic Residues
2'-hydroxybiphenyl-2-sulfinate desulfinase  M-CSA #971

Part of a bacerial 4S pathway that removes covalently bound sulfur from dibenzothiophene (DBT) without breaking carbon-carbon bonds. This enzymatic system employs four different enzymes (DszA, DszB, DszC, and DszD) to work sequentially in order to oxidize the C−S bond and remove the oxidized sulfur as HSO3-. Bacteria use the oxidized sulfur for their anabolic needs such as producing sulfur-containing amino acids. DszB naturally metabolizes 2′-hydroxybiphenyl-2-sulfinate (HBPS) into biphenyl-2-ol without using cofactors. This reaction might be useful in the future for the processing of crude oil in a more environmentally friendly and lucrative way.

Defined by 5 residues: SER:A-25CYS:A-27HIS:A-60ARG:A-70GLY:A-73
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Explore in 3D: M-CSA Motif Definition
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EC: 3.13.1.3 (PDB Primary Data)