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Entry version 143 (18 Sep 2019)
Sequence version 1 (01 May 2000)
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Protein

Small nuclear ribonucleoprotein-associated protein

Gene

smB

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Unreviewed-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>
-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

<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 functionRibonucleoproteinUniRule annotationSAAS annotationImported, RNA-bindingUniRule annotation, Viral nucleoproteinImported

<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_and_taxonomy_section">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:
Small nuclear ribonucleoprotein-associated proteinUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:smBImported
Ordered Locus Names:At4g20440Imported
ORF Names:F9F13.90Imported, F9F13_90Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiArabidopsis thaliana (Mouse-ear cress)Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri3702 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000006548 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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 4

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT4G20440

The Arabidopsis Information Resource

More...
TAIRi
locus:2128610 AT4G20440

<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 Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

NucleusUniRule annotation, Virion

<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

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q9SUN5

<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

STRING: functional protein association networks

More...
STRINGi
3702.AT4G20440.1

<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

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SMRi
Q9SUN5

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_and_domains_section">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>Domaini7 – 84SmInterPro annotationAdd BLAST78

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni136 – 257DisorderedSequence analysisAdd BLAST122

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi150 – 257Pro-richSequence analysisAdd BLAST108

<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.UniRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG3168 Eukaryota
COG1958 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000188899

KEGG Orthology (KO)

More...
KOi
K11086

Identification of Orthologs from Complete Genome Data

More...
OMAi
RGMGMMP

Database of Orthologous Groups

More...
OrthoDBi
1630470at2759

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
IPR017131 snRNP-assoc_SmB/SmN

Pfam protein domain database

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

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF037187 snRNP_SmB/SmN, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

Q9SUN5-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSMSKSSKML QFINYRMRVT IQDGRQLVGK FMAFDRHMNL VLGDCEEFRK
60 70 80 90 100
LPPAKGKKIN EEREDRRTLG LVLLRGEEVI SMTVEGPPPP EESRAKAGSA
110 120 130 140 150
AAVAGPGIGR AAGRGVPTGP LVQAQPGLSG PVRGVGGPAP GMMQPQISRP
160 170 180 190 200
PQLSAPPIIR PPGQMLPPPP FGGQGPPMGR GPPPPYGMRP PPQQFSGPPP
210 220 230 240 250
PQYGQRPMIP PPGGMMRGPP PPPHGMQGPP PPRPGMPPAP GGFAPPRPGM

PPHNQQQ
Length:257
Mass (Da):27,140
Last modified:May 1, 2000 - 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:iD931178ECBC51BF5
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
BT004219 mRNA Translation: AAO42236.1
BT005057 mRNA Translation: AAO50590.1
CP002687 Genomic DNA Translation: AEE84330.1
CP002687 Genomic DNA Translation: AEE84331.1
CP002687 Genomic DNA Translation: AEE84332.1
CP002687 Genomic DNA Translation: AEE84333.1
CP002687 Genomic DNA Translation: ANM67817.1
AK317021 mRNA Translation: BAH19715.1
AL080253 Genomic DNA Translation: CAB45810.1
AL161553 Genomic DNA Translation: CAB79044.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T10586

NCBI Reference Sequences

More...
RefSeqi
NP_001031682.1, NM_001036605.1
NP_001154258.1, NM_001160786.1
NP_001329619.1, NM_001341439.1
NP_193777.1, NM_118163.4
NP_849414.1, NM_179083.3

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT4G20440.1; AT4G20440.1; AT4G20440
AT4G20440.2; AT4G20440.2; AT4G20440
AT4G20440.3; AT4G20440.3; AT4G20440
AT4G20440.4; AT4G20440.4; AT4G20440
AT4G20440.5; AT4G20440.5; AT4G20440

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
827792

Gramene; a comparative resource for plants

More...
Gramenei
AT4G20440.1; AT4G20440.1; AT4G20440
AT4G20440.2; AT4G20440.2; AT4G20440
AT4G20440.3; AT4G20440.3; AT4G20440
AT4G20440.4; AT4G20440.4; AT4G20440
AT4G20440.5; AT4G20440.5; AT4G20440

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT4G20440

<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
BT004219 mRNA Translation: AAO42236.1
BT005057 mRNA Translation: AAO50590.1
CP002687 Genomic DNA Translation: AEE84330.1
CP002687 Genomic DNA Translation: AEE84331.1
CP002687 Genomic DNA Translation: AEE84332.1
CP002687 Genomic DNA Translation: AEE84333.1
CP002687 Genomic DNA Translation: ANM67817.1
AK317021 mRNA Translation: BAH19715.1
AL080253 Genomic DNA Translation: CAB45810.1
AL161553 Genomic DNA Translation: CAB79044.1
PIRiT10586
RefSeqiNP_001031682.1, NM_001036605.1
NP_001154258.1, NM_001160786.1
NP_001329619.1, NM_001341439.1
NP_193777.1, NM_118163.4
NP_849414.1, NM_179083.3

3D structure databases

SMRiQ9SUN5
ModBaseiSearch...

Protein-protein interaction databases

STRINGi3702.AT4G20440.1

Proteomic databases

PRIDEiQ9SUN5

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiAT4G20440.1; AT4G20440.1; AT4G20440
AT4G20440.2; AT4G20440.2; AT4G20440
AT4G20440.3; AT4G20440.3; AT4G20440
AT4G20440.4; AT4G20440.4; AT4G20440
AT4G20440.5; AT4G20440.5; AT4G20440
GeneIDi827792
GrameneiAT4G20440.1; AT4G20440.1; AT4G20440
AT4G20440.2; AT4G20440.2; AT4G20440
AT4G20440.3; AT4G20440.3; AT4G20440
AT4G20440.4; AT4G20440.4; AT4G20440
AT4G20440.5; AT4G20440.5; AT4G20440
KEGGiath:AT4G20440

Organism-specific databases

AraportiAT4G20440
TAIRilocus:2128610 AT4G20440

Phylogenomic databases

eggNOGiKOG3168 Eukaryota
COG1958 LUCA
HOGENOMiHOG000188899
KOiK11086
OMAiRGMGMMP
OrthoDBi1630470at2759

Family and domain databases

InterProiView protein in InterPro
IPR001163 LSM_dom_euk/arc
IPR010920 LSM_dom_sf
IPR017131 snRNP-assoc_SmB/SmN
PfamiView protein in Pfam
PF01423 LSM, 1 hit
PIRSFiPIRSF037187 snRNP_SmB/SmN, 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 nameiQ9SUN5_ARATH
<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: Q9SUN5
Secondary accession number(s): A0A178V576
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/TrEMBL: May 1, 2000
Last sequence update: May 1, 2000
Last modified: September 18, 2019
This is version 143 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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

Complete proteome, Reference proteomeImported
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

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