Annotations: 2APN

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2apna_	All beta proteins	HesB-like domain	HesB-like domain	automated matches	automated matches	(Haemophilus influenzae ) [TaxId: 727 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A		e2apnA1	A: Globin-like	X: Globin-like	H: Globin-like	T: RRM_1	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.300.12	Mainly Beta	Sandwich	Hypothetical Protein Aq_1857	Chain: A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01521	Iron-sulphur cluster biosynthesis (Fe-S_biosyn)	Iron-sulphur cluster biosynthesis	This family is involved in iron-sulphur cluster biosynthesis [3]. Its members include proteins that are involved in nitrogen fixation such as the HesB and HesB-like proteins [1] [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Protein HI1723	iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding 4 iron, 4 sulfur cluster binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding	biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation cellular component biogenesis cellular component organization metallo-sulfur cluster assembly cellular component assembly iron-sulfur cluster assembly biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation cellular component biogenesis cellular component organization metallo-sulfur cluster assembly cellular component assembly iron-sulfur cluster assembly cellular component organization or biogenesis	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR023063	FeS A-type assembly protein ErpA, proteobacteria	Family
A	IPR017870	FeS cluster insertion, C-terminal, conserved site	Conserved Site
A	IPR035903	HesB-like domain superfamily	Homologous Superfamily
A	IPR000361	Core domain, A-type assembly protein ATAP	Domain
A	IPR016092	FeS A-type assembly protein ATAP	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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.