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Entry version 124 (17 Jun 2020)
Sequence version 1 (01 May 1997)
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Protein

Probable small nuclear ribonucleoprotein-associated protein B

Gene

snr-2

Organism
Caenorhabditis elegans
Status
Reviewed-Annotation score:

Annotation score:3 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>
-Protein inferred from homologyi <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

Associated with the spliceosome snRNP U1, U2, U4/U6 and U5. May have a functional role in the pre-mRNA splicing or in snRNP structure (By similarity).By similarity

<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 functionRibonucleoprotein, RNA-binding
Biological processmRNA processing, mRNA splicing

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-CEL-111367 SLBP independent Processing of Histone Pre-mRNAs
R-CEL-191859 snRNP Assembly
R-CEL-72163 mRNA Splicing - Major Pathway
R-CEL-72165 mRNA Splicing - Minor Pathway
R-CEL-73856 RNA Polymerase II Transcription Termination
R-CEL-77588 SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs

<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:
Probable small nuclear ribonucleoprotein-associated protein B
Short name:
snRNP-B
Alternative name(s):
Sm protein B
Short name:
Sm-B
Short name:
SmB
<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:snr-2
ORF Names:W08E3.1
<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>OrganismiCaenorhabditis elegansImported
<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 identifieri6239 [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 lineageiEukaryotaMetazoaEcdysozoaNematodaChromadoreaRhabditidaRhabditinaRhabditomorphaRhabditoideaRhabditidaePeloderinaeCaenorhabditis
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001940 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome I

Organism-specific databases

WormBase

More...
WormBasei
W08E3.1 ; CE14704 ; WBGene00004915 ; snr-2

<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

Nucleus, Spliceosome

<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_00001255221 – 160Probable small nuclear ribonucleoprotein-associated protein BAdd BLAST160

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P91918

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P91918

PeptideAtlas

More...
PeptideAtlasi
P91918

PRoteomics IDEntifications database

More...
PRIDEi
P91918

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
WBGene00004915 Expressed in multi-cellular organism and 2 other tissues

<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

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
38599, 12 interactors

Protein interaction database and analysis system

More...
IntActi
P91918, 3 interactors

STRING: functional protein association networks

More...
STRINGi
6239.W08E3.1

<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
P91918

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

<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 snRNP SmB/SmN family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG3168 Eukaryota
COG1958 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000170258

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_076902_1_1_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P91918

KEGG Orthology (KO)

More...
KOi
K11086

Identification of Orthologs from Complete Genome Data

More...
OMAi
DKHMNIL

Database of Orthologous Groups

More...
OrthoDBi
1630470at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P91918

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR001163 LSM_dom_euk/arc
IPR010920 LSM_dom_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01423 LSM, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00651 Sm, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50182 SSF50182, 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.

P91918-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTISKNNKMM AHLNYRMKII LQDGRTFIGF FKAFDKHMNI LLAECEEHRQ
60 70 80 90 100
IKPKAGKKTD GEEKRILGLV LVRGEHIVSM TVDGPPPRDD DSVRLAKAGG
110 120 130 140 150
AGGVGQAKPG GRGMPAMPGM PGMPPGGAPG GLSGAMRGHG GPGMAAMQPG
160
YGGPPGGRPF
Length:160
Mass (Da):16,742
Last modified:May 1, 1997 - 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:i8427F8FFA0DAA9A1
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
Z92773 Genomic DNA Translation: CAB07132.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T26289

NCBI Reference Sequences

More...
RefSeqi
NP_493348.1, NM_060947.4

Genome annotation databases

Ensembl metazoan genome annotation project

More...
EnsemblMetazoai
W08E3.1.1; W08E3.1.1; WBGene00004915

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
173204

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
cel:CELE_W08E3.1

UCSC genome browser

More...
UCSCi
W08E3.1 c. elegans

<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
Z92773 Genomic DNA Translation: CAB07132.1
PIRiT26289
RefSeqiNP_493348.1, NM_060947.4

3D structure databases

SMRiP91918
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi38599, 12 interactors
IntActiP91918, 3 interactors
STRINGi6239.W08E3.1

Proteomic databases

EPDiP91918
PaxDbiP91918
PeptideAtlasiP91918
PRIDEiP91918

Genome annotation databases

EnsemblMetazoaiW08E3.1.1; W08E3.1.1; WBGene00004915
GeneIDi173204
KEGGicel:CELE_W08E3.1
UCSCiW08E3.1 c. elegans

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
173204
WormBaseiW08E3.1 ; CE14704 ; WBGene00004915 ; snr-2

Phylogenomic databases

eggNOGiKOG3168 Eukaryota
COG1958 LUCA
GeneTreeiENSGT00940000170258
HOGENOMiCLU_076902_1_1_1
InParanoidiP91918
KOiK11086
OMAiDKHMNIL
OrthoDBi1630470at2759
PhylomeDBiP91918

Enzyme and pathway databases

ReactomeiR-CEL-111367 SLBP independent Processing of Histone Pre-mRNAs
R-CEL-191859 snRNP Assembly
R-CEL-72163 mRNA Splicing - Major Pathway
R-CEL-72165 mRNA Splicing - Minor Pathway
R-CEL-73856 RNA Polymerase II Transcription Termination
R-CEL-77588 SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs

Miscellaneous databases

Protein Ontology

More...
PROi
PR:P91918

Gene expression databases

BgeeiWBGene00004915 Expressed in multi-cellular organism and 2 other tissues

Family and domain databases

InterProiView protein in InterPro
IPR001163 LSM_dom_euk/arc
IPR010920 LSM_dom_sf
PfamiView protein in Pfam
PF01423 LSM, 1 hit
SMARTiView protein in SMART
SM00651 Sm, 1 hit
SUPFAMiSSF50182 SSF50182, 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 nameiRSMB_CAEEL
<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: P91918
<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 28, 2003
Last sequence update: May 1, 1997
Last modified: June 17, 2020
This is version 124 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 programCaenorhabditis annotation project

<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

Keywords - Technical termi

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Caenorhabditis elegans
    Caenorhabditis elegans: entries, gene names and cross-references to WormBase
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