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Protein

Proteasome subunit beta type-2

Gene

Psmb2

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex).By similarity

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.By similarity

GO - Molecular functioni

GO - Biological processi

  • proteolysis involved in cellular protein catabolic process Source: InterPro
  • response to organic cyclic compound Source: RGD
  • response to organonitrogen compound Source: RGD

Keywordsi

Molecular functionHydrolase, Protease, Threonine protease

Enzyme and pathway databases

ReactomeiR-RNO-1169091 Activation of NF-kappaB in B cells
R-RNO-1234176 Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha
R-RNO-1236978 Cross-presentation of soluble exogenous antigens (endosomes)
R-RNO-174084 Autodegradation of Cdh1 by Cdh1:APC/C
R-RNO-174113 SCF-beta-TrCP mediated degradation of Emi1
R-RNO-174154 APC/C:Cdc20 mediated degradation of Securin
R-RNO-174178 APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1
R-RNO-174184 Cdc20:Phospho-APC/C mediated degradation of Cyclin A
R-RNO-187577 SCF(Skp2)-mediated degradation of p27/p21
R-RNO-195253 Degradation of beta-catenin by the destruction complex
R-RNO-202424 Downstream TCR signaling
R-RNO-2467813 Separation of Sister Chromatids
R-RNO-2871837 FCERI mediated NF-kB activation
R-RNO-349425 Autodegradation of the E3 ubiquitin ligase COP1
R-RNO-350562 Regulation of ornithine decarboxylase (ODC)
R-RNO-382556 ABC-family proteins mediated transport
R-RNO-450408 AUF1 (hnRNP D0) binds and destabilizes mRNA
R-RNO-4608870 Asymmetric localization of PCP proteins
R-RNO-4641257 Degradation of AXIN
R-RNO-4641258 Degradation of DVL
R-RNO-5358346 Hedgehog ligand biogenesis
R-RNO-5607761 Dectin-1 mediated noncanonical NF-kB signaling
R-RNO-5607764 CLEC7A (Dectin-1) signaling
R-RNO-5610780 Degradation of GLI1 by the proteasome
R-RNO-5610785 GLI3 is processed to GLI3R by the proteasome
R-RNO-5632684 Hedgehog 'on' state
R-RNO-5658442 Regulation of RAS by GAPs
R-RNO-5668541 TNFR2 non-canonical NF-kB pathway
R-RNO-5676590 NIK-->noncanonical NF-kB signaling
R-RNO-5687128 MAPK6/MAPK4 signaling
R-RNO-5689603 UCH proteinases
R-RNO-5689880 Ub-specific processing proteases
R-RNO-68827 CDT1 association with the CDC6:ORC:origin complex
R-RNO-68949 Orc1 removal from chromatin
R-RNO-69017 CDK-mediated phosphorylation and removal of Cdc6
R-RNO-69229 Ubiquitin-dependent degradation of Cyclin D1
R-RNO-69481 G2/M Checkpoints
R-RNO-69601 Ubiquitin Mediated Degradation of Phosphorylated Cdc25A
R-RNO-8852276 The role of GTSE1 in G2/M progression after G2 checkpoint
R-RNO-8854050 FBXL7 down-regulates AURKA during mitotic entry and in early mitosis
R-RNO-8939236 RUNX1 regulates transcription of genes involved in differentiation of HSCs
R-RNO-8939902 Regulation of RUNX2 expression and activity
R-RNO-8941858 Regulation of RUNX3 expression and activity
R-RNO-8948751 Regulation of PTEN stability and activity
R-RNO-9020702 Interleukin-1 signaling
R-RNO-983168 Antigen processing: Ubiquitination & Proteasome degradation

Protein family/group databases

MEROPSiT01.984

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit beta type-2 (EC:3.4.25.1By similarity)
Alternative name(s):
Macropain subunit C7-I
Multicatalytic endopeptidase complex subunit C7-I
Proteasome component C7-I
Gene namesi
Name:Psmb2
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Chromosome 5

Organism-specific databases

RGDi61874 Psmb2

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; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus, Proteasome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001480451 – 201Proteasome subunit beta type-2Add BLAST201

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei1N-acetylmethionineBy similarity1

Keywords - PTMi

Acetylation

Proteomic databases

PaxDbiP40307
PRIDEiP40307

PTM databases

iPTMnetiP40307
PhosphoSitePlusiP40307
SwissPalmiP40307

Expressioni

Inductioni

Down-regulated by theophylline (THP) and 1,3-dinitrobenzene (DNB), two reprotoxic agents thought to induce infertility.1 Publication

Gene expression databases

BgeeiENSRNOG00000011463
GenevisibleiP40307 RN

Interactioni

Subunit structurei

The 26S proteasome consists of a 20S proteasome core and two 19S regulatory subunits. The 20S proteasome core is a barrel-shaped complex made of 28 subunits that are arranged in four stacked rings. The two outer rings are each formed by seven alpha subunits, and the two inner rings are formed by seven beta subunits. The proteolytic activity is exerted by three beta-subunits PSMB5, PSMB6 and PSMB7.By similarity

Protein-protein interaction databases

IntActiP40307, 1 interactor
STRINGi10116.ENSRNOP00000015618

Structurei

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
6EPCelectron microscopy12.3041-201[»]
6EPDelectron microscopy15.4041-201[»]
6EPEelectron microscopy12.8041-201[»]
6EPFelectron microscopy11.8041-201[»]
ProteinModelPortaliP40307
SMRiP40307
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1B family.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiKOG0177 Eukaryota
COG0638 LUCA
GeneTreeiENSGT00640000091536
HOGENOMiHOG000188743
HOVERGENiHBG000815
InParanoidiP40307
KOiK02734
OMAiQLYSMRN
OrthoDBiEOG091G0K9M
PhylomeDBiP40307
TreeFamiTF106219

Family and domain databases

CDDicd03758 proteasome_beta_type_2, 1 hit
Gene3Di3.60.20.10, 1 hit
InterProiView protein in InterPro
IPR029055 Ntn_hydrolases_N
IPR035206 Proteasome_beta2
IPR016050 Proteasome_bsu_CS
IPR001353 Proteasome_sua/b
IPR023333 Proteasome_suB-type
PANTHERiPTHR11599:SF6 PTHR11599:SF6, 1 hit
PfamiView protein in Pfam
PF00227 Proteasome, 1 hit
SUPFAMiSSF56235 SSF56235, 1 hit
PROSITEiView protein in PROSITE
PS00854 PROTEASOME_BETA_1, 1 hit
PS51476 PROTEASOME_BETA_2, 1 hit

Sequencei

Sequence statusi: Complete.

P40307-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEYLIGIQGP DYVLVASDRV AASNIVQMKD DHDKMFKMSE KILLLCVGEA
60 70 80 90 100
GDTVQFAEYI QKNVQLYKMR NGYELSPTAA ANFTRRNLAD CLRSRTPYHV
110 120 130 140 150
NLLLAGYDEH EGPALYYMDY LAALAKAPFA AHGYGAFLTL SILDRYYTPT
160 170 180 190 200
ISRERAVELL RKCLEELQKR FILNLPTFSV RVIDKDGIHN LENITFTKRS

S
Length:201
Mass (Da):22,912
Last modified:February 1, 1995 - v1
Checksum:iE9AC021972B76528
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti70R → L AA sequence (PubMed:8405448).Curated1
Sequence conflicti81A → V AA sequence (PubMed:8405448).Curated1
Sequence conflicti91C → P AA sequence (PubMed:8405448).Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D21799 mRNA Translation: BAA04823.1
BC058487 mRNA Translation: AAH58487.1
PIRiS38725
RefSeqiNP_058980.1, NM_017284.1
UniGeneiRn.1981

Genome annotation databases

EnsembliENSRNOT00000015618; ENSRNOP00000015618; ENSRNOG00000011463
GeneIDi29675
KEGGirno:29675
UCSCiRGD:61874 rat

Similar proteinsi

Entry informationi

Entry nameiPSB2_RAT
AccessioniPrimary (citable) accession number: P40307
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1995
Last sequence update: February 1, 1995
Last modified: May 23, 2018
This is version 142 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. Peptidase families
    Classification of peptidase families and list of entries
  3. SIMILARITY comments
    Index of protein domains and families

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