Annotations: 1Z26

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1z26a1	All beta proteins	SH3-like barrel	PAZ domain	PAZ domain	Argonaute homologue PF0537	(Pyrococcus furiosus ) [TaxId: 2261 ],	SCOPe (2.08)
A	d1z26a3	Alpha and beta proteins (a/b)	Phosphotyrosine protein phosphatases I-like	PIWI domain N-terminal-like	PIWI domain N-terminal	Argonaute homologue PF0537	(Pyrococcus furiosus ) [TaxId: 2261 ],	SCOPe (2.08)
A	d1z26a4	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	PIWI domain C-terminal	Argonaute homologue PF0537	(Pyrococcus furiosus ) [TaxId: 2261 ],	SCOPe (2.08)
A	d1z26a5	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Pyrococcus furiosus ) [TaxId: 2261 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	RNA-binding domain RBD	8091463	3000110	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Mid domain of argonaute	8091464	3002210	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	PAZ domain	8040607	3001750	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ribonuclease H-like	8040608	3000143	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	PAZ_siRNAbind	e1z26A1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PAZ_siRNAbind	ECOD (1.6)
A	EUF08366	e1z26A4	A: a+b two layers	X: Alpha-beta plaits	H: Argonaute, N-terminal domain (From Topology)	T: Argonaute, N-terminal domain	F: EUF08366	ECOD (1.6)
A	EUF08367	e1z26A3	A: a+b two layers	X: Alpha-beta plaits	H: Argonaute, N-terminal domain (From Topology)	T: Argonaute, N-terminal domain	F: EUF08367	ECOD (1.6)
A	COG1431_4th	e1z26A2	A: a/b three-layered sandwiches	X: Middle domain in Argonaute homologs (From Topology)	H: Middle domain in Argonaute homologs (From Topology)	T: Middle domain in Argonaute homologs	F: COG1431_4th	ECOD (1.6)
A	Piwi_C_1	e1z26A5	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Piwi_C_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.70.180	Alpha Beta	Alpha-Beta Complex	Cathepsin B	Chain A	CATH (4.3.0)
A	3.40.50.2300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Response regulator	CATH (4.3.0)
A	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02171	Piwi domain (Piwi)	Piwi domain	-	Family
A	PF12212	PAZ domain (PAZ_2)	PAZ domain	This entry corresponds to the PAZ domain found in some archaeal argonaute proteins [1]. It is an siRNA binding domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Argonaute	DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on a nucleic acid hydrolase activity catalytic activity DNA nuclease activity DNA binding binding organic cyclic compound binding nucleic acid binding cation binding DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on a nucleic acid hydrolase activity catalytic activity DNA nuclease activity DNA binding binding organic cyclic compound binding nucleic acid binding cation binding manganese ion binding transition metal ion binding ion binding metal ion binding small molecule binding	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response defense response to symbiont response to external stimulus clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids response to biotic stimulus defense response to other organism response to stress response to external biotic stimulus	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR021103	Argonaute PAZ domain, archaea	Domain
A	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A	IPR036085	PAZ domain superfamily	Homologous Superfamily
A	IPR003165	Piwi domain	Domain
A	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.