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Entry version 32 (07 Oct 2020)
Sequence version 1 (24 Jan 2006)
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Protein

Piwi-like protein 2

Gene

wi-2

Organism
Schmidtea mediterranea (Freshwater planarian flatworm)
Status
Reviewed-Annotation score:

Annotation score:2 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

Required for the production of functional progeny from adult somatic stem cells (neoblasts).1 Publication

<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
Biological processRNA-mediated gene silencing

<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
Alternative name(s):
SMEDWI-2
<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:wi-2
<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>OrganismiSchmidtea mediterranea (Freshwater planarian flatworm)
<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 identifieri79327 [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 lineageiEukaryotaMetazoaSpiraliaLophotrochozoaPlatyhelminthesRhabditophoraSeriataTricladidaContinenticolaGeoplanoideaDugesiidaeSchmidtea

<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_00002279741 – 833Piwi-like protein 2Add BLAST833

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed in dividing adult stem cells.1 Publication

<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
Q2Q5Y8

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>Domaini220 – 330PAZPROSITE-ProRule annotationAdd BLAST111
Domaini515 – 815PiwiPROSITE-ProRule annotationAdd BLAST301

<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

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
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
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.

Q2Q5Y8-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MEEIPVKVAK LEANGSETRG KMGNRGGLRG TFRIVEPNLQ PADITEKTGN
60 70 80 90 100
IGRTVKLQSN FTKFSVLRSE KFMMYDSVFS QVGLSPKVKL QFIVRVCQEN
110 120 130 140 150
KLPGAFCFDG RRLFTSEKWH GESDIQEFSH DEKKMTLRLV STILPETEEY
160 170 180 190 200
YQMINVLLNN LQVMLGQERI GKGYFLSPNI TKDEVPRNSG PTFFETNSFK
210 220 230 240 250
VLGGFGTTLQ RGTKPTGELT TLLYIERINR VLNDNSVMKA YNRRSIDQLI
260 270 280 290 300
GRDIITKYNN KTYRISEIKE MNVDEKFEMG GRTLSYAEYF KERYNIRLTQ
310 320 330 340 350
GDQPFVLTRV KKPMRRERKK KDEEGVEKEK EKEAPEEKDM TLNIPGELCF
360 370 380 390 400
LCGFSDQEKS NMDLQKNLGC VLKREPRERL DDIPAYCNWI KNSDAATGMC
410 420 430 440 450
NKWQLKIDNK PLEIEGRELP PCDVISGGSK INEKMGDDWK FGRVQFDIKR
460 470 480 490 500
DRKHEIDVVI VDRNDFQYKN FMNDVEQELR NMRIDARVGK VNTCGPNDVE
510 520 530 540 550
RCLNDAARSG SGCAKMALVF VPDDRVYAKV KSFTMSTGLL TQCVTTRNGT
560 570 580 590 600
NRNDKRRKVV SSKTVMQIFA KFGYDPWTVE IKLRPTMIVG MDTYHNKSSK
610 620 630 640 650
KSIQASVFSI NSTFTQYMSF VVNSPKGRQE FHETLGKNFN LALEDFKKRY
660 670 680 690 700
DILPQRILVF RDGVGDNQLQ FTKNFEVDAM KPLIENIYKG NGFPVPQIIY
710 720 730 740 750
VIVKKRVGTK LFNRGNNPNP GTVVDKEIVK PNFYEFFLVS QRTTKGTATP
760 770 780 790 800
TNYNVLEDTR LLTKKGTMDP MAPNELQKIT YALTHLYFNW MGTIRVPVPV
810 820 830
HYAHRLAELV GKVHKGSNPV AINERIRNRL FYL
Length:833
Mass (Da):95,827
Last modified:January 24, 2006 - 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:i354F1612FA590023
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
DQ186986 mRNA Translation: ABB77338.1

<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
DQ186986 mRNA Translation: ABB77338.1

3D structure databases

SMRiQ2Q5Y8
ModBaseiSearch...

Family and domain databases

Gene3Di3.30.420.10, 1 hit
InterProiView protein in InterPro
IPR003100, PAZ_dom
IPR036085, PAZ_dom_sf
IPR003165, Piwi
IPR012337, RNaseH-like_sf
IPR036397, RNaseH_sf
PfamiView protein in Pfam
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 nameiPIWI2_SCHMD
<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: Q2Q5Y8
<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 21, 2006
Last sequence update: January 24, 2006
Last modified: October 7, 2020
This is version 32 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)

<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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