Annotations: 1UNB

Deacetoxycephalosporin C synthase complexed with 2-oxoglutarate and ampicillin

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	d1unba_	All beta proteins	Double-stranded beta-helix	Clavaminate synthase-like	Penicillin synthase-like	Deacetoxycephalosporin C synthase	(Streptomyces clavuligerus ) [TaxId: 1901 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Clavaminate synthase-like	8043052	3001848	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	Copper-bind	e1unbA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.120.330	Mainly Beta	Sandwich	Jelly Rolls	B-lactam Antibiotic, Isopenicillin N Synthase	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	DEACETOXYCEPHALOSPORIN C SYNTHETASE	oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, with 2-oxoglutarate as one donor, and the other dehydrogenated oxidoreductase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen deacetoxycephalosporin-C synthase activity catalytic activity organic acid binding binding carbohydrate binding vitamin binding ion binding anion binding monosaccharide binding carboxylic acid binding heterocyclic compound binding oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, with 2-oxoglutarate as one donor, and the other dehydrogenated oxidoreductase activity oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen deacetoxycephalosporin-C synthase activity catalytic activity organic acid binding binding carbohydrate binding vitamin binding ion binding anion binding monosaccharide binding carboxylic acid binding heterocyclic compound binding L-ascorbic acid binding small molecule binding cation binding transition metal ion binding iron ion binding metal ion binding	antibiotic metabolic process biosynthetic process metabolic process cellular process antibiotic biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR050231	Iron_ascorbate_oxido_reductase	Unknown
A	IPR005123	Oxoglutarate/iron-dependent dioxygenase domain	Domain
A	IPR002057	Isopenicillin N synthase, conserved site	Conserved Site
A	IPR027443	Isopenicillin N synthase-like superfamily	Homologous Superfamily
A	IPR044861	Isopenicillin N synthase-like, Fe(2+) 2OG dioxygenase domain	Domain

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

Chains	Enzyme Name	Description	Catalytic Residues
A	deacetoxycephalosporin-C synthase M-CSA #137	Deacetoxycephalosporin C synthase (DAOCS) from Streptomyces clavuligerus is able to catalyse the synthesis of sporins from penicillin using 2-oxoglutarate (2OG) as a co-substrate. This reaction is potentially very useful to industry because it enables processing of penicillin to other beta-lactam ring containing compounds which may not trigger antibiotic resistance systems in prokaryotes that evolved with penicillin itself as the selective agent. As with the other members of the family of 2OG utilising enzymes, DAOCS shows a beta barrel catalytic core and has its iron centre ligated to two histidines and an aspartate residue at the active site. It also displays roughly the same catalytic cycle, albeit for a specific reaction, as seen for the other members of the family, such as anthocyanidin synthase.	Defined by 1 residue: ARG:A-74 \| Explore in 3D: M-CSA Motif Definition At least 2 residues must be present to support Structure Motif searching. EC: 1.14.20.1 (PDB Primary Data)

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.