Annotations: 2QB8

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	DHHA2	e2qb8A6	A: a+b three layers	X: C-terminal domain in DHH phosphoesterases (From Topology)	H: C-terminal domain in DHH phosphoesterases (From Topology)	T: C-terminal domain in DHH phosphoesterases	F: DHHA2	ECOD (1.6)
A	UNK_F_TYPE	e2qb8A5	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: DHH phosphoesterases	F: UNK_F_TYPE	ECOD (1.6)
B	DHHA2	e2qb8B6	A: a+b three layers	X: C-terminal domain in DHH phosphoesterases (From Topology)	H: C-terminal domain in DHH phosphoesterases (From Topology)	T: C-terminal domain in DHH phosphoesterases	F: DHHA2	ECOD (1.6)
B	UNK_F_TYPE	e2qb8B5	A: a/b three-layered sandwiches	X: HAD domain-like	H: HAD domain-related	T: DHH phosphoesterases	F: UNK_F_TYPE	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.1640.10	Alpha Beta	Alpha-Beta Complex	inorganic pyrophosphatase (n-terminal core)	inorganic pyrophosphatase (n-terminal core)	CATH (4.3.0)
A	3.10.310.20	Alpha Beta	Roll	Diaminopimelate Epimerase	Chain A, domain 1	CATH (4.3.0)
B	3.90.1640.10	Alpha Beta	Alpha-Beta Complex	inorganic pyrophosphatase (n-terminal core)	inorganic pyrophosphatase (n-terminal core)	CATH (4.3.0)
B	3.10.310.20	Alpha Beta	Roll	Diaminopimelate Epimerase	Chain A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02833	DHHA2 domain (DHHA2)	DHHA2 domain	-	Family
A, B	PF01368	DHH family, N-terminal domain (DHH)	DHH family, N-terminal domain	It is predicted that this family of proteins all perform a phosphoesterase function. This domain is found at the N-terminal of the single stranded DNA exonuclease RecJ. It shows an alpha-beta configuration [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Exopolyphosphatase	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity exopolyphosphatase activity hydrolase activity, acting on acid anhydrides catalytic activity cation binding metal ion binding	catabolic process oxoacid metabolic process metabolic process cellular process small molecule metabolic process organic acid metabolic process polyphosphate catabolic process phosphorus metabolic process polyphosphate metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001667	DDH domain	Domain
A, B	IPR004097	DHHA2 domain	Domain
A, B	IPR038763	DHH phosphoesterase superfamily	Homologous Superfamily
A, B	IPR038222	DHHA2 domain superfamily	Homologous Superfamily

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.