Annotations: 1R4K

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1r4ka_	All beta proteins	SH3-like barrel	PAZ domain	PAZ domain	Argonaute 1	fruit fly (Drosophila melanogaster ) [TaxId: 7227 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	PAZ domain	8027982	4000853	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	PAZ domain	8040361	3001750	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	PF02170	e1r4kA1	A: beta barrels	X: SH3	H: SH3	T: SH3	F: PF02170	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.170.260.10	Mainly Beta	Beta Complex	paz domain	paz domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF02170	PAZ domain (PAZ)	PAZ domain	This domain is named PAZ after the proteins Piwi Argonaut and Zwille. This domain is found in two families of proteins that are involved in post-transcriptional gene silencing. These are the Piwi family and the Dicer family, that includes the Carpel ...	This domain is named PAZ after the proteins Piwi Argonaut and Zwille. This domain is found in two families of proteins that are involved in post-transcriptional gene silencing. These are the Piwi family and the Dicer family, that includes the Carpel factory protein. The function of the domains is unknown but has been suggested to mediate complex formation between proteins of the Piwi and Dicer families by hetero-dimerisation. The three-dimensional structure of this domain has been solved [2-4]. The PAZ domain is composed of two subdomains. One subdomain is similar to the OB fold, albeit with a different topology. The OB-fold is well known as a single-stranded nucleic acid binding fold. The second subdomain is composed of a beta-hairpin followed by an alpha-helix. The PAZ domains shows low-affinity nucleic acid binding and appears to interact with the 3' ends of single-stranded regions of RNA in the cleft between the two subdomains. PAZ can bind the characteristic two-base 3' overhangs of siRNAs, indicating that although PAZ may not be a primary nucleic acid binding site in Dicer or RISC, it may contribute to the specific and productive incorporation of siRNAs and miRNAs into the RNAi pathway.	Domain
A	PF16488	Argonaute linker 2 domain (ArgoL2)	Argonaute linker 2 domain	-	Family
A	PF08699	Argonaute linker 1 domain (ArgoL1)	Argonaute linker 1 domain	ArgoL1 is a region found in argonaute [1] proteins. It normally co-occurs with Pfam:PF02179 and Pfam:PF02171. It is a linker region between the N-terminal and the PAZ domains. It contains an alpha-helix packed against a three-stranded antiparallel be ...	ArgoL1 is a region found in argonaute [1] proteins. It normally co-occurs with Pfam:PF02179 and Pfam:PF02171. It is a linker region between the N-terminal and the PAZ domains. It contains an alpha-helix packed against a three-stranded antiparallel beta-sheet with two long beta-strands (beta8 and beta9) of the sheet spanning one face of the adjacent N and PAZ domains. L1 together with linker 2, L2, PAZ and ArgoN forms a compact global fold [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Argonaute 1	endoribonuclease activity, cleaving miRNA-paired mRNA endonuclease activity RNA endonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity nuclease activity hydrolase activity, acting on ester bonds RNA endonuclease activity endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters catalytic activity binding organic cyclic compound binding endoribonuclease activity, cleaving miRNA-paired mRNA endonuclease activity RNA endonuclease activity, producing 5'-phosphomonoesters catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity nuclease activity hydrolase activity, acting on ester bonds RNA endonuclease activity endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters catalytic activity binding organic cyclic compound binding nucleic acid binding RNA binding single-stranded RNA binding regulatory RNA binding miRNA binding protein binding enzyme binding	multicellular organismal process regulation of biological process system process learning learning or memory response to stimulus nervous system process regulation of system process biological regulation cognition associative learning regulation of olfactory learning regulation of nervous system process regulation of behavior behavior multicellular organismal process regulation of biological process system process learning learning or memory response to stimulus nervous system process regulation of system process biological regulation cognition associative learning regulation of olfactory learning regulation of nervous system process regulation of behavior behavior regulation of response to stimulus olfactory behavior response to chemical chemosensory behavior regulation of multicellular organismal process olfactory learning regulation of cellular process cellular biosynthetic process organonitrogen compound biosynthetic process negative regulation of biological process negative regulation of cellular metabolic process regulation of primary metabolic process post-transcriptional regulation of gene expression negative regulation of translation organic substance metabolic process organic substance biosynthetic process negative regulation of cellular process protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biosynthetic process organonitrogen compound metabolic process cellular metabolic process regulation of protein metabolic process negative regulation of metabolic process regulation of cellular metabolic process primary metabolic process regulation of macromolecule metabolic process gene expression translation macromolecule biosynthetic process negative regulation of cellular biosynthetic process regulation of cellular biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process regulation of translation negative regulation of macromolecule biosynthetic process regulation of macromolecule biosynthetic process metabolic process cellular process macromolecule metabolic process regulation of metabolic process developmental process blastoderm segmentation embryonic pattern specification segmentation pattern specification process embryo development regionalization multicellular organism development anatomical structure development segment polarity determination periodic partitioning cell population proliferation sexual reproduction cellular developmental process reproductive process germarium-derived egg chamber formation oogenesis multicellular organismal reproductive process cell development cellular process involved in reproduction in multicellular organism developmental process involved in reproduction female gamete generation gamete generation anatomical structure morphogenesis cell differentiation germ-line cyst formation anatomical structure formation involved in morphogenesis germarium-derived female germ-line cyst formation germ cell development female germ-line cyst formation female germ-line stem cell population maintenance germ-line stem cell population maintenance maintenance of cell number stem cell population maintenance nonassociative learning habituation miRNA-mediated gene silencing by mRNA destabilization nucleobase-containing compound metabolic process positive regulation of metabolic process regulation of RNA metabolic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of biological quality RNA catabolic process mRNA catabolic process positive regulation of nucleobase-containing compound metabolic process positive regulation of mRNA metabolic process nucleobase-containing compound catabolic process positive regulation of RNA metabolic process organic cyclic compound metabolic process miRNA-mediated post-transcriptional gene silencing post-transcriptional gene silencing nucleic acid catabolic process catabolic process positive regulation of biological process RNA metabolic process mRNA destabilization macromolecule catabolic process regulation of mRNA catabolic process RNA destabilization regulation of catabolic process mRNA metabolic process nucleic acid metabolic process organic cyclic compound catabolic process regulatory ncRNA-mediated post-transcriptional gene silencing positive regulation of catabolic process regulation of mRNA stability regulatory ncRNA-mediated gene silencing positive regulation of mRNA catabolic process regulation of RNA stability regulation of mRNA metabolic process organic substance catabolic process ribonucleoprotein complex biogenesis RISC complex assembly protein-RNA complex assembly cellular component organization cellular component biogenesis protein-RNA complex organization cellular component assembly protein-containing complex assembly cellular component organization or biogenesis protein-containing complex organization protein-DNA complex organization chromatin organization chromatin remodeling heterochromatin formation epigenetic regulation of gene expression negative regulation of gene expression, epigenetic cell fate determination germarium-derived oocyte fate determination oocyte fate determination germarium-derived oocyte differentiation oocyte differentiation cell fate commitment RNA processing regulatory ncRNA processing miRNA processing	protein-containing complex ribonucleoprotein complex RNAi effector complex RISC complex intracellular anatomical structure cytoplasm cellular anatomical entity RISC-loading complex endoribonuclease complex catalytic complex intracellular protein-containing complex endonuclease complex perinuclear region of cytoplasm cytoplasmic ribonucleoprotein granule protein-containing complex ribonucleoprotein complex RNAi effector complex RISC complex intracellular anatomical structure cytoplasm cellular anatomical entity RISC-loading complex endoribonuclease complex catalytic complex intracellular protein-containing complex endonuclease complex perinuclear region of cytoplasm cytoplasmic ribonucleoprotein granule ribonucleoprotein granule intracellular organelle organelle intracellular non-membrane-bounded organelle supramolecular complex P-body non-membrane-bounded organelle membrane-bounded organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A	IPR014811	Argonaute, linker 1 domain	Domain
A	IPR032472	Argonaute linker 2 domain	Domain
A	IPR012337	Ribonuclease H-like superfamily	Homologous Superfamily
A	IPR045246	Argonaute-like, PIWI domain	Domain
A	IPR003100	PAZ domain	Domain
A	IPR032473	Protein argonaute, Mid domain	Domain
A	IPR036085	PAZ domain superfamily	Homologous Superfamily
A	IPR003165	Piwi domain	Domain
A	IPR032474	Protein argonaute, 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 R01GM133198.