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Entry version 135 (07 Apr 2021)
Sequence version 1 (01 Oct 2000)
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Protein

Proteasome subunit beta type-5-B

Gene

PBE2

Organism
Arabidopsis thaliana (Mouse-ear cress)
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 protein 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

The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity.

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • Cleavage of peptide bonds with very broad specificity. EC:3.4.25.1

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 sitei58NucleophileBy 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 functionHydrolase, Protease, Threonine protease

Protein family/group databases

MEROPS protease database

More...
MEROPSi
T01.A10

<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:
Proteasome subunit beta type-5-B (EC:3.4.25.1)
Alternative name(s):
20S proteasome beta subunit E-2
Proteasome epsilon-2 chain
<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:PBE2
Ordered Locus Names:At3g26340
ORF Names:F20C19.6
<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>OrganismiArabidopsis thaliana (Mouse-ear cress)
<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 identifieri3702 [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 lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
<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
  • UP000006548 <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 3

Organism-specific databases

Arabidopsis Information Portal

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Araporti
AT3G26340

The Arabidopsis Information Resource

More...
TAIRi
locus:2079241, AT3G26340

<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

Keywords - Cellular componenti

Cytoplasm, Nucleus, Proteasome

<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 <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_00000428261 – 57Removed in mature formBy similarityAdd BLAST57
<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_000004282758 – 273Proteasome subunit beta type-5-BAdd BLAST216

Keywords - PTMi

Zymogen

Proteomic databases

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

More...
PaxDbi
Q9LIP2

PRoteomics IDEntifications database

More...
PRIDEi
Q9LIP2

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
226228

<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

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q9LIP2, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q9LIP2, AT

<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 20S core complex of the 26S proteasome. The 26S proteasome is composed of a core protease (CP), known as the 20S proteasome, capped at one or both ends by the 19S regulatory particle (RP/PA700). The 20S proteasome core is composed of 28 subunits that are arranged in four stacked rings, resulting in a barrel-shaped structure. The two end rings are each formed by seven alpha subunits, and the two central rings are each formed by seven beta subunits. The catalytic chamber with the active sites is on the inside of the barrel.

2 Publications

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...
BioGRIDi
7569, 4 interactors

Protein interaction database and analysis system

More...
IntActi
Q9LIP2, 2 interactors

STRING: functional protein association networks

More...
STRINGi
3702.AT3G26340.1

<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
Q9LIP2

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 peptidase T1B family.PROSITE-ProRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0175, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_035750_7_3_1

InParanoid: Eukaryotic Ortholog Groups

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InParanoidi
Q9LIP2

Identification of Orthologs from Complete Genome Data

More...
OMAi
NLGMAMQ

Database of Orthologous Groups

More...
OrthoDBi
929961at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9LIP2

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.60.20.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR029055, Ntn_hydrolases_N
IPR000243, Pept_T1A_subB
IPR016050, Proteasome_bsu_CS
IPR001353, Proteasome_sua/b
IPR023333, Proteasome_suB-type

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00227, Proteasome, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00141, PROTEASOME

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF56235, SSF56235, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00854, PROTEASOME_BETA_1, 1 hit
PS51476, PROTEASOME_BETA_2, 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.

<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 in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

Q9LIP2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKLDTSGLET TMPVIGFGSN SEMLDGFSSA PSFDLPRTTD FDGFQKKAVE
60 70 80 90 100
MVKPAKGTTT LAFIFKEGVM VAADSRASMG GYISSQSVKK IIEINPYMLG
110 120 130 140 150
TMAGGAADCQ FWHRNLGIKC RLHELANKRR ISVSGASKLL ANMLYSYRGM
160 170 180 190 200
GLSVGTMIAG WDETGPGLYY VDNEGGRLKG DRFSVGSGSP YAYGVLDSGY
210 220 230 240 250
KFDMSVEEAS ELARRSIYHA TFRDGASGGV ASVYHVGPQG WTKLSGDDVG
260 270
ELHYHYYPVA PITAEHVMEE AAE
Length:273
Mass (Da):29,485
Last modified:October 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:iFAE197B491BDE6A7
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
AP001298 Genomic DNA Translation: BAB02194.1
CP002686 Genomic DNA Translation: AEE77147.1
AY125569 mRNA Translation: AAM78079.1
AF439846 mRNA Translation: AAL27514.1
AY085678 mRNA Translation: AAM62897.1

NCBI Reference Sequences

More...
RefSeqi
NP_189265.1, NM_113541.4

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT3G26340.1; AT3G26340.1; AT3G26340

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
822238

Gramene; a comparative resource for plants

More...
Gramenei
AT3G26340.1; AT3G26340.1; AT3G26340

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT3G26340

<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
AP001298 Genomic DNA Translation: BAB02194.1
CP002686 Genomic DNA Translation: AEE77147.1
AY125569 mRNA Translation: AAM78079.1
AF439846 mRNA Translation: AAL27514.1
AY085678 mRNA Translation: AAM62897.1
RefSeqiNP_189265.1, NM_113541.4

3D structure databases

SMRiQ9LIP2
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi7569, 4 interactors
IntActiQ9LIP2, 2 interactors
STRINGi3702.AT3G26340.1

Protein family/group databases

MEROPSiT01.A10

Proteomic databases

PaxDbiQ9LIP2
PRIDEiQ9LIP2
ProteomicsDBi226228

Genome annotation databases

EnsemblPlantsiAT3G26340.1; AT3G26340.1; AT3G26340
GeneIDi822238
GrameneiAT3G26340.1; AT3G26340.1; AT3G26340
KEGGiath:AT3G26340

Organism-specific databases

AraportiAT3G26340
TAIRilocus:2079241, AT3G26340

Phylogenomic databases

eggNOGiKOG0175, Eukaryota
HOGENOMiCLU_035750_7_3_1
InParanoidiQ9LIP2
OMAiNLGMAMQ
OrthoDBi929961at2759
PhylomeDBiQ9LIP2

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q9LIP2

Gene expression databases

ExpressionAtlasiQ9LIP2, baseline and differential
GenevisibleiQ9LIP2, AT

Family and domain databases

Gene3Di3.60.20.10, 1 hit
InterProiView protein in InterPro
IPR029055, Ntn_hydrolases_N
IPR000243, Pept_T1A_subB
IPR016050, Proteasome_bsu_CS
IPR001353, Proteasome_sua/b
IPR023333, Proteasome_suB-type
PfamiView protein in Pfam
PF00227, Proteasome, 1 hit
PRINTSiPR00141, PROTEASOME
SUPFAMiSSF56235, SSF56235, 1 hit
PROSITEiView protein in PROSITE
PS00854, PROTEASOME_BETA_1, 1 hit
PS51476, PROTEASOME_BETA_2, 1 hit

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 nameiPSB5B_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: Q9LIP2
<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: November 22, 2005
Last sequence update: October 1, 2000
Last modified: April 7, 2021
This is version 135 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 programPlant 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

Keywords - Technical termi

Reference proteome

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  3. SIMILARITY comments
    Index of protein domains and families
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