Annotations: 1IM5

Crystal Structure of Pyrazinamidase of Pyrococcus horikoshii in Complex with Zinc

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	d1im5a_	Alpha and beta proteins (a/b)	Isochorismatase-like hydrolases	Isochorismatase-like hydrolases	Isochorismatase-like hydrolases	Pyrazinamidase/nicotinamidase	(Pyrococcus horikoshii ) [TaxId: 53953 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Isochorismatase-like hydrolases	8024273	4000591	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Isochorismatase-like hydrolases	8036652	3001778	SCOP2 (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	Isochorismatase	e1im5A1	A: alpha arrays	X: Isochorismatase-like hydrolases	H: Isochorismatase-like hydrolases	T: Isochorismatase-like hydrolases	F: Isochorismatase	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.850	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Isochorismatase-like	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	180aa long hypothetical Pyrazinamidase/Nicotinamidase	amidase activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides nicotinamidase activity hydrolase activity catalytic activity hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000868	Isochorismatase-like domain	Domain
A	IPR052347	Isochorismatase Family Nicotinamidases	Family
A	IPR036380	Isochorismatase-like superfamily	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A	nicotinamidase M-CSA #716	Pyrazinamide (PZA) is a prodrug used in the treatment of tuberculosis. PZA is converted to the active pyrazinoic acid by the bacterial PZAase enzyme; mutations in PZAase can therefore confer PZA resistance to M. tuberculosis. The gene product of Pyrococcus horikoshii 999 (PH999) shows PZAase and nicotinamidase activity, and extensive sequence homology to M. tuberculosis PZAase.	Defined by 9 residues: ASP:A-10ASP:A-52HIS:A-54SER:A-60HIS:A-71LYS:A-94GLU:A-101ALA:A-129CYS:A-133 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.5.1.19 (PDB Primary Data) Search M-CSA Motif + EC 3.5.1.19