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Entry version 46 (11 Dec 2019)
Sequence version 1 (21 Aug 2007)
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Protein

Piwi-like protein 2

Gene

piwil2

Organism
Oncorhynchus mykiss (Rainbow trout) (Salmo gairdneri)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at transcript leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Endoribonuclease that plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and govern the methylation and subsequent repression of transposons. During piRNA biosynthesis, plays a key role in the piRNA amplification loop, also named ping-pong amplification cycle, by acting as a 'slicer-competent' piRNA endoribonuclease that cleaves primary piRNAs, which are then loaded onto 'slicer-incompetent' piwil4. Piwil2 slicing produces a pre-miRNA intermediate, which is then processed in mature piRNAs, and as well as a 16 nucleotide by-product that is degraded. Required for piwil4/miwi2 nuclear localization and association with secondary piRNAs antisense.By similarity

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Mg2+By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei826By similarity1
Active sitei864By similarity1
Active sitei896By similarity1
Active sitei1029By similarity1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDevelopmental protein, Endonuclease, Hydrolase, Nuclease, RNA-binding
Biological processDifferentiation, Meiosis, RNA-mediated gene silencing, Translation regulation
LigandMetal-binding

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Piwi-like protein 2 (EC:3.1.26.-By similarity)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:piwil2
Synonyms:rtili
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiOncorhynchus mykiss (Rainbow trout) (Salmo gairdneri)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri8022 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiActinopterygiiNeopterygiiTeleosteiProtacanthopterygiiSalmoniformesSalmonidaeSalmoninaeOncorhynchus

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003672881 – 1054Piwi-like protein 2Add BLAST1054

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Methylated on arginine residues; required for the interaction with Tudor domain-containing protein and subsequent localization to the meiotic nuage, also named P granule.By similarity

Keywords - PTMi

Methylation

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Component of the PET complex.

By similarity

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
A6P7L8

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini464 – 576PAZPROSITE-ProRule annotationAdd BLAST113
Domaini749 – 1040PiwiPROSITE-ProRule annotationAdd BLAST292

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the argonaute family. Piwi subfamily.Curated

Phylogenomic databases

Database of Orthologous Groups

More...
OrthoDBi
220258at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.420.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR014811, ArgoL1
IPR003100, PAZ_dom
IPR036085, PAZ_dom_sf
IPR003165, Piwi
IPR012337, RNaseH-like_sf
IPR036397, RNaseH_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08699, ArgoL1, 1 hit
PF02170, PAZ, 1 hit
PF02171, Piwi, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00949, PAZ, 1 hit
SM00950, Piwi, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF101690, SSF101690, 1 hit
SSF53098, SSF53098, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50821, PAZ, 1 hit
PS50822, PIWI, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

A6P7L8-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDPKKPCFPG LPGATRIPWL QQQAWGRGLR SDEPAIGRAR GLMFATDGSA
60 70 80 90 100
SLGRARGFTT AGDTLLMQYG RGVPFPVSDP SIGFARGIPM PTSEDGGINR
110 120 130 140 150
PRGWLLSTAD PTVGVARGEP LLGLGPHLGQ ATPGQLAKQD LPEEMPSLQA
160 170 180 190 200
EEEVVAKQVD MSTQGQGSSL VSMFRGMGID PSKTWGRGGL PVGRGVFGAE
210 220 230 240 250
LQPQTAPVGA VAVAGPGGDR FPEDMMGQGN SFLGRGVPSQ MVGMGRASMH
260 270 280 290 300
PLGAGRGPTV PPTLPPSLHK EAHMTPGCSL TKGELKMEAT CETLHKTGTK
310 320 330 340 350
GTPLPIGSNH ITIHCRNEAV YQYHVTFTPN VESMGMRFGM MKDHRPTTGE
360 370 380 390 400
VVAFDGSILY LPVKMEEVVH LKSVRRTDNQ EVDIKVQMTK ILPPNSDLCI
410 420 430 440 450
PFYNVVLRRV MKILGLKLVG RNHYDPKSAV ILGKHRLQVW PGYSTCIKHT
460 470 480 490 500
DGGLYLQVDV SHKVLRNDSV LDCMNVIYQQ SRESFQDECT KELIGSIVIT
510 520 530 540 550
RYNNRTYRID DIEWGKSPKD TFTMADGSTT TFVEYYSKNY GITIKEMDQP
560 570 580 590 600
MLIHRPKERS KPGGKQVITG EILLLPELSF TTGIPDKMRK DFRAMKDLTM
610 620 630 640 650
HINVSSEQHT HSLKQLLKNI NTNPEAQTEL ARWGLEISQD ILVTIGRILP
660 670 680 690 700
LETICLQSVS FVTGADVSWS REVIRDASIS CIPMNCWAIF YPRRCAEQAE
710 720 730 740 750
ELVSCFGKVA GPMGLRLDRP IRVELKDDRT ETYVKSIHSQ LTSEPNVQLV
760 770 780 790 800
VCIMTGNRDD LYSAIKKLCC VQSPVPSQAI NVRTISQPQK LRSVAQKILL
810 820 830 840 850
QMNCKLGGEL WTVNVPLKHL MVIGVDVHHD TSKKNRSVMG FVASLNSLLT
860 870 880 890 900
RWYSRVTFQM PNEEIINGFR VCLLAALQKY YGVNHNFPEK IVVYRDGVSD
910 920 930 940 950
GQLKTVELYE IPQLLKCFET FPNYEPKLAF IVVQKRVSTN LYSCSGDRFG
960 970 980 990 1000
TPPPGTVLDH TVTNREWVDF YLMAHHVRQG CGLPTRNISV YNTANLSPDH
1010 1020 1030 1040 1050
LQRLTFKMCH MYWNWPGTIR VPAPCKYAHK LAFLSGQYLH SEPAIQLADK

LYFL
Length:1,054
Mass (Da):117,141
Last modified:August 21, 2007 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iBAA8E82F58F5A944
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AB331649 mRNA Translation: BAF69069.1

NCBI Reference Sequences

More...
RefSeqi
NP_001117714.1, NM_001124242.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100135857

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB331649 mRNA Translation: BAF69069.1
RefSeqiNP_001117714.1, NM_001124242.1

3D structure databases

SMRiA6P7L8
ModBaseiSearch...

Genome annotation databases

GeneIDi100135857

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
55124

Phylogenomic databases

OrthoDBi220258at2759

Family and domain databases

Gene3Di3.30.420.10, 1 hit
InterProiView protein in InterPro
IPR014811, ArgoL1
IPR003100, PAZ_dom
IPR036085, PAZ_dom_sf
IPR003165, Piwi
IPR012337, RNaseH-like_sf
IPR036397, RNaseH_sf
PfamiView protein in Pfam
PF08699, ArgoL1, 1 hit
PF02170, PAZ, 1 hit
PF02171, Piwi, 1 hit
SMARTiView protein in SMART
SM00949, PAZ, 1 hit
SM00950, Piwi, 1 hit
SUPFAMiSSF101690, SSF101690, 1 hit
SSF53098, SSF53098, 1 hit
PROSITEiView protein in PROSITE
PS50821, PAZ, 1 hit
PS50822, PIWI, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPIWL2_ONCMY
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: A6P7L8
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 24, 2009
Last sequence update: August 21, 2007
Last modified: December 11, 2019
This is version 46 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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