5THE | pdb_00005the

Crystal structure of the C-terminal lobe of a budding yeast Argonaute

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
G	SCOP2B Superfamily	Ribonuclease H-like	8053674	3000143	SCOP2B (2022-06-29)
E	SCOP2B Superfamily	Ribonuclease H-like	8053674	3000143	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	Ribonuclease H-like	8053674	3000143	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Ribonuclease H-like	8053674	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)
G	Piwi_N_1	e5theG2	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_1	ECOD (1.6)
G	Piwi_C	e5theG1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Piwi_C	ECOD (1.6)
E	Piwi_C	e5theE1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: Piwi_C	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C, E, G	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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D, F, H	RNA (5'-R(PUPAPAPAPAPAPAPA)-3')	-	-	-
A, C, E, G	Uncharacterized protein	RNA binding binding nucleic acid binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C, E, G	IPR040937	Argonaute, N-terminal	Domain
A, C, E, G	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A, C, E, G	IPR036085	PAZ domain superfamily	Homologous Superfamily
A, C, E, G	IPR040588	Argonaute, N domain	Domain
A, C, E, G	IPR003165	Piwi domain	Domain
A, C, E, G	IPR003100	PAZ domain	Domain
A, C, E, G	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.