1U6Z

Structure of an E. coli Exopolyphosphatase: Insight into the processive hydrolysis of polyphosphate and its regulation

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1u6za1	All alpha proteins	HD-domain/PDEase-like	HD-domain/PDEase-like	Ppx associated domain	Exopolyphosphatase Ppx C-terminal domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
A	d1u6za2	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Ppx/GppA phosphatase	Exopolyphosphatase Ppx	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1u6zb1	All alpha proteins	HD-domain/PDEase-like	HD-domain/PDEase-like	Ppx associated domain	Exopolyphosphatase Ppx C-terminal domain	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)
B	d1u6zb2	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Actin-like ATPase domain	Ppx/GppA phosphatase	Exopolyphosphatase Ppx	(Escherichia coli ) [TaxId: 562 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Ppx associated domain	8020475	4001504	SCOP2 (2022-06-29)
A	SCOP2 Family	Ppx/GppA phosphatase	8020476	4002229	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	HD-domain/PDEase-like	8032855	3000943	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Actin-like ATPases	8032857	3000092	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Actin-like ATPases	8032856	3000092	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Actin-like ATPases	8032856	3000092	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	HD-domain/PDEase-like	8032855	3000943	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Actin-like ATPases	8032857	3000092	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	PRK10854	e1u6zA1	A: alpha complex topology	X: PDEase-like	H: HD-domain/PDEase-like (From Topology)	T: HD-domain/PDEase-like	F: PRK10854	ECOD (1.6)
A	Ppx-GppA_N	e1u6zA2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Ppx-GppA_N	ECOD (1.6)
A	Ppx-GppA_C	e1u6zA3	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Ppx-GppA_C	ECOD (1.6)
B	PRK10854	e1u6zB1	A: alpha complex topology	X: PDEase-like	H: HD-domain/PDEase-like (From Topology)	T: HD-domain/PDEase-like	F: PRK10854	ECOD (1.6)
B	Ppx-GppA_N	e1u6zB2	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Ppx-GppA_N	ECOD (1.6)
B	Ppx-GppA_C	e1u6zB3	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Ppx-GppA_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.30.420.40	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
A	3.30.420.150	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
A	1.10.3210.10	Mainly Alpha	Orthogonal Bundle	Hypothetical protein af1432	Hypothetical protein af1432	CATH (4.3.0)
A	3.30.70.2260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)
B	3.30.420.40	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
B	3.30.420.150	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)
B	1.10.3210.10	Mainly Alpha	Orthogonal Bundle	Hypothetical protein af1432	Hypothetical protein af1432	CATH (4.3.0)
B	3.30.70.2260	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF02541	Ppx/GppA phosphatase family (Ppx-GppA)	Ppx/GppA phosphatase family	-	Family
A, B	PF21447	Ppx/GppA phosphatase, domain III (Ppx-GppA_III)	Ppx/GppA phosphatase, domain III	Ppx/GppA phosphatases belong to ASKHA (acetate and sugar kinases, Hsp70, actin) which has an N-terminal (Pfam:PF02541) nucleotide-binding domain (domains I/II), domain III which corresponds to the catalytic phosphohydrolase domain with the common hel ...	Ppx/GppA phosphatases belong to ASKHA (acetate and sugar kinases, Hsp70, actin) which has an N-terminal (Pfam:PF02541) nucleotide-binding domain (domains I/II), domain III which corresponds to the catalytic phosphohydrolase domain with the common helical fold and domain IV [1-3]. This entry represents domain III.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Exopolyphosphatase	guanosine tetraphosphate binding guanyl nucleotide binding binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding guanosine tetraphosphate binding guanyl nucleotide binding binding nucleotide binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding identical protein binding protein binding protein homodimerization activity protein dimerization activity pyrophosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity exopolyphosphatase activity hydrolase activity, acting on acid anhydrides catalytic activity	cellular catabolic process 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	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR050273	GppA/Ppx guanosine pentaphosphate hydrolase	Family
A, B	IPR022371	Exopolyphosphatase	Domain
A, B	IPR048950	Ppx/GppA phosphatase, C-terminal	Domain
A, B	IPR030673	Pyrophosphatase, GppA/Ppx-type	Family
A, B	IPR043129	ATPase, nucleotide binding domain	Homologous Superfamily
A, B	IPR003695	Ppx/GppA phosphatase, N-terminal	Domain

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.