3GAS | pdb_00003gas

Crystal Structure of Helicobacter pylori Heme Oxygenase Hugz in Complex with Heme

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F	Pyrid_oxidase_2	e3gasF1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
F	DUF2470	e3gasF2	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)
E	Pyrid_oxidase_2	e3gasE1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
E	DUF2470	e3gasE2	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)
D	Pyrid_oxidase_2	e3gasD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
D	DUF2470	e3gasD2	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)
C	Pyrid_oxidase_2	e3gasC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
C	DUF2470	e3gasC2	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)
B	Pyrid_oxidase_2	e3gasB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
B	DUF2470	e3gasB2	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)
A	Pyrid_oxidase_2	e3gasA2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel	F: Pyrid_oxidase_2	ECOD (1.6)
A	DUF2470	e3gasA1	A: a+b two layers	X: a+b domain in heme oxygenase (From Topology)	H: a+b domain in heme oxygenase (From Topology)	T: a+b domain in heme oxygenase	F: DUF2470	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
F	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
E	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
E	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
D	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
D	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
C	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
C	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
B	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
B	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)
A	3.20.180.10	Alpha Beta	Alpha-Beta Barrel	Split barrel-like	PNP-oxidase-like	CATH (4.3.0)
A	2.30.110.10	Mainly Beta	Roll	Pnp Oxidase	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F	PF01243	Pyridoxamine 5'-phosphate oxidase (PNPOx_N)	Pyridoxamine 5'-phosphate oxidase	This entry includes pyridoxamine 5'-phosphate oxidases, FMN flavoproteins that catalyse the oxidation of pyridoxamine-5-P (PMP) and pyridoxine-5-P (PNP) to pyridoxal-5-P (PLP). This reaction serves as the terminal step in the de novo biosynthesis of ...	This entry includes pyridoxamine 5'-phosphate oxidases, FMN flavoproteins that catalyse the oxidation of pyridoxamine-5-P (PMP) and pyridoxine-5-P (PNP) to pyridoxal-5-P (PLP). This reaction serves as the terminal step in the de novo biosynthesis of PLP in Escherichia coli and as a part of the salvage pathway of this coenzyme in both E. coli and mammalian cells [1-5]. The binding sites for FMN and for substrate have been highly conserved throughout evolution. In some species, the coenzyme F420 may perform the FMN role [7]. This entry represents the N-terminal segment of these proteins, which is involved in FMN binding when they form the dimer [5]. In human PNPO, it has been shown that this region contains some of the residues that constitute the PLP allosteric site which regulates its activity [4]. The C-terminal region of these proteins (Pfam:PF10590) is involved in dimerisation and also contributes some residues to the PLP allosteric site. Some of the members included in this entry are involved in phenazine biosynthesis [6].	Domain
A, B, C, D, E A, B, C, D, E, F	PF10615	Domain of unknown function (DUF2470) (DUF2470)	Domain of unknown function (DUF2470)	This domain is found in a group of putative heme-iron utilisation proteins, such as HugZ. It can also be found in C-terminal of the glutamyl-tRNA reductase-binding (GluTRBP) protein from Arabidopsis [1]. GluTRBP is involved in the regulation of gluta ...	This domain is found in a group of putative heme-iron utilisation proteins, such as HugZ. It can also be found in C-terminal of the glutamyl-tRNA reductase-binding (GluTRBP) protein from Arabidopsis [1]. GluTRBP is involved in the regulation of glutamyl-tRNA reductase (GluTR) which is important for the synthesis and distribution of 5-aminolevulinate, a precursor in heme and chlorophyll biosynthesis [2]. GluTRBP is necessary for efficient photosynthetic electron transport in chloroplasts [3].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D, E A, B, C, D, E, F	heme oxygenase	organic acid binding binding ion binding anion binding coenzyme F420 binding carboxylic acid binding heterocyclic compound binding carbohydrate derivative binding small molecule binding cation binding metal ion binding oxidoreductase activity oxidoreductase activity, acting on the CH-CH group of donors catalytic activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D, E A, B, C, D, E, F	IPR012349	FMN-binding split barrel	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR011576	Pyridoxamine 5'-phosphate oxidase, N-terminal	Domain
A, B, C, D, E A, B, C, D, E, F	IPR037119	Haem oxygenase HugZ-like superfamily	Homologous Superfamily
A, B, C, D, E A, B, C, D, E, F	IPR019595	Domain of unknown function DUF2470	Domain
A, B, C, D, E A, B, C, D, E, F	IPR026324	Haem oxygenase, HugZ	Family
A, B, C, D, E A, B, C, D, E, F	IPR052019	F420H(2)-dependent biliverdin reductase/Heme oxygenase	Family

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.