Annotations: 1W9H

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1w9ha2	Alpha and beta proteins (a/b)	Phosphotyrosine protein phosphatases I-like	PIWI domain N-terminal-like	PIWI domain N-terminal	Hypothetical protein AF1318	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
A	d1w9ha3	Alpha and beta proteins (a/b)	Ribonuclease H-like motif	Ribonuclease H-like	PIWI domain C-terminal	Hypothetical protein AF1318	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	PIWI domain	8020624	4002242	SCOP2 (2022-06-29)
A	SCOP2 Family	Mid domain of argonaute	8053602	4004605	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ribonuclease H-like	8033004	3000143	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Mid domain of argonaute	8053603	3002210	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	Piwi_N_2	e1w9hA1	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: Piwi_N_2	ECOD (1.6)
A	Piwi_C_1	e1w9hA2	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	3.40.50.2300	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	HYPOTHETICAL PROTEIN AF1318	DNA binding binding organic cyclic compound binding nucleic acid binding RNA binding cation binding ion binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036397	Ribonuclease H 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.