Annotations: 8JSI

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D [auth B]	PF22476	Argonaute, N-terminal domain (Ago_N_3)	Argonaute, N-terminal domain	This domain is found at the N-terminal end of Protein argonaute from Pyrococcus furiosus (Ago), a component of the RNAi effector complex (RISC). Ago is organised into four domains: N (this entry), PAZ (Pfam:PF12212), middle and PIWI (Pfam:PF02171). T ...	This domain is found at the N-terminal end of Protein argonaute from Pyrococcus furiosus (Ago), a component of the RNAi effector complex (RISC). Ago is organised into four domains: N (this entry), PAZ (Pfam:PF12212), middle and PIWI (Pfam:PF02171). This domain shows a small four-stranded beta-sheet, three alpha-helices and a beta-hairpin [1].	Domain
A, D [auth B]	PF02171	Piwi domain (Piwi)	Piwi domain	This domain is found in the protein Piwi and its relatives. The function of this domain is the dsRNA guided hydrolysis of ssRNA. Determination of the crystal structure of Argonaute reveals that PIWI is an RNase H domain, and identifies Argonaute as S ...	This domain is found in the protein Piwi and its relatives. The function of this domain is the dsRNA guided hydrolysis of ssRNA. Determination of the crystal structure of Argonaute reveals that PIWI is an RNase H domain, and identifies Argonaute as Slicer, the enzyme that cleaves mRNA in the RNAi RISC complex [2]. In addition, Mg+2 dependence and production of 3'-OH and 5' phosphate products are shared characteristics of RNaseH and RISC. The PIWI domain core has a tertiary structure belonging to the RNase H family of enzymes. RNase H fold proteins all have a five-stranded mixed beta-sheet surrounded by helices. By analogy to RNase H enzymes which cleave single-stranded RNA guided by the DNA strand in an RNA/DNA hybrid, the PIWI domain can be inferred to cleave single-stranded RNA, for example mRNA, guided by double stranded siRNA.	Domain
A, D [auth B]	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
C [auth G], F [auth H]	DNA (5'-D(PGPGPAPGPGPTPAPGPTPAPGPGPTPTPGPT)-3')	-	-	-
B [auth T], E [auth U]	DNA (5'-D(PAPCPAPAPCPCPTPAPCPTPAPCPCPTPCPC)-3')	-	-	-
A, D [auth B]	Argonaute family protein	RNA binding binding nucleic acid binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D [auth B]	IPR055253	Argonaute, N-terminal domain, thermococcales	Domain
A, D [auth B]	IPR021103	Argonaute PAZ domain, archaea	Domain
A, D [auth B]	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A, D [auth B]	IPR036085	PAZ domain superfamily	Homologous Superfamily
A, D [auth B]	IPR003165	Piwi domain	Domain
A, D [auth B]	IPR003100	PAZ domain	Domain
A, D [auth B]	IPR012337	Ribonuclease H-like 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.