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O81147 (PSA6B_ARATH) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 117. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (3) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Proteasome subunit alpha type-6-B

EC=3.4.25.1
Alternative name(s):
20S proteasome subunit alpha A-2
Proteasome subunit alpha type-1
Gene names
Name:PAA2
Ordered Locus Names:At2g05840
ORF Names:T6P5.4
OrganismArabidopsis thaliana (Mouse-ear cress) [Reference proteome]
Taxonomic identifier3702 [NCBI]
Taxonomic lineageEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis

Protein attributes

Sequence length246 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

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.

Catalytic activity

Cleavage of peptide bonds with very broad specificity.

Subunit structure

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. Ref.5 Ref.6 Ref.7

Subcellular location

Cytoplasm By similarity. Nucleus By similarity.

Sequence similarities

Belongs to the peptidase T1A family.

Alternative products

This entry describes 1 isoform produced by alternative splicing. [Select]

Note: A number of isoforms are produced. According to EST sequences.
Isoform 1 (identifier: O81147-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 246246Proteasome subunit alpha type-6-B
PRO_0000124136

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified November 1, 1998. Version 1.
Checksum: 6819F0989BD1DBE6

FASTA24627,350
        10         20         30         40         50         60 
MSRGSGAGYD RHITIFSPEG RLFQVEYAFK AVKAAGITSI GVRGKDSVCV VTQKKVPDKL 

        70         80         90        100        110        120 
LDQSSVSHLF PVTKYLGLLA TGMTADSRSL VQQARNEAAE FRFQYGYEMP ADILAKWIAD 

       130        140        150        160        170        180 
KSQVYTQHAY MRPLGVVAMV LGIDEERGPL LYKCDPAGHF YGHKATSAGM KEQEAVNFLE 

       190        200        210        220        230        240 
KKMKENPAFT YDETVQTAIS ALQSVLQEDF KATEIEVGVV RADDPLFRSL RTEEIDEHLT 


AISERD 

« Hide

References

« Hide 'large scale' references
[1]"Molecular organization of the 20S proteasome gene family from Arabidopsis thaliana."
Fu H., Doelling J.H., Arendt C.S., Hochstrasser M., Vierstra R.D.
Genetics 149:677-692(1998) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA], GENE FAMILY, NOMENCLATURE.
Strain: cv. Columbia.
[2]"Sequence and analysis of chromosome 2 of the plant Arabidopsis thaliana."
Lin X., Kaul S., Rounsley S.D., Shea T.P., Benito M.-I., Town C.D., Fujii C.Y., Mason T.M., Bowman C.L., Barnstead M.E., Feldblyum T.V., Buell C.R., Ketchum K.A., Lee J.J., Ronning C.M., Koo H.L., Moffat K.S., Cronin L.A. expand/collapse author list , Shen M., Pai G., Van Aken S., Umayam L., Tallon L.J., Gill J.E., Adams M.D., Carrera A.J., Creasy T.H., Goodman H.M., Somerville C.R., Copenhaver G.P., Preuss D., Nierman W.C., White O., Eisen J.A., Salzberg S.L., Fraser C.M., Venter J.C.
Nature 402:761-768(1999) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: cv. Columbia.
[3]The Arabidopsis Information Resource (TAIR)
Submitted (APR-2011) to the EMBL/GenBank/DDBJ databases
Cited for: GENOME REANNOTATION.
Strain: cv. Columbia.
[4]"Empirical analysis of transcriptional activity in the Arabidopsis genome."
Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M., Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G., Liu S.X., Lam B., Sakano H., Wu T., Yu G. expand/collapse author list , Miranda M., Quach H.L., Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C., Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J., Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A., Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C., Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X., Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M., Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K., Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A., Ecker J.R.
Science 302:842-846(2003) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Strain: cv. Columbia.
[5]"Structure and functional analyses of the 26S proteasome subunits from plants."
Fu H., Girod P.-A., Doelling J.H., van Nocker S., Hochstrasser M., Finley D., Vierstra R.D.
Mol. Biol. Rep. 26:137-146(1999) [PubMed] [Europe PMC] [Abstract]
Cited for: SUBUNIT.
[6]"Purification of the Arabidopsis 26 S proteasome: biochemical and molecular analyses revealed the presence of multiple isoforms."
Yang P., Fu H., Walker J., Papa C.M., Smalle J., Ju Y.-M., Vierstra R.D.
J. Biol. Chem. 279:6401-6413(2004) [PubMed] [Europe PMC] [Abstract]
Cited for: SUBUNIT, IDENTIFICATION BY MASS SPECTROMETRY.
[7]"Affinity purification of the Arabidopsis 26 S proteasome reveals a diverse array of plant proteolytic complexes."
Book A.J., Gladman N.P., Lee S.S., Scalf M., Smith L.M., Vierstra R.D.
J. Biol. Chem. 285:25554-25569(2010) [PubMed] [Europe PMC] [Abstract]
Cited for: IDENTIFICATION BY MASS SPECTROMETRY, CHARACTERIZATION OF THE 26S PROTEASOME COMPLEX, SUBUNIT.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AF043519 mRNA. Translation: AAC32055.1.
AC005970 Genomic DNA. Translation: AAC95161.1.
CP002685 Genomic DNA. Translation: AEC05979.1.
AY052679 mRNA. Translation: AAK96583.1.
AY143829 mRNA. Translation: AAN28768.1.
PIRT51967.
RefSeqNP_178641.1. NM_126597.3. [O81147-1]
UniGeneAt.22533.

3D structure databases

ProteinModelPortalO81147.
SMRO81147. Positions 2-245.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

BioGrid534. 3 interactions.
IntActO81147. 4 interactions.
STRING3702.AT2G05840.1-P.

Protein family/group databases

MEROPST01.971.

Proteomic databases

PaxDbO81147.
PRIDEO81147.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsAT2G05840.1; AT2G05840.1; AT2G05840. [O81147-1]
GeneID815135.
KEGGath:AT2G05840.

Organism-specific databases

TAIRAT2G05840.

Phylogenomic databases

eggNOGCOG0638.
HOGENOMHOG000091084.
InParanoidO81147.
KOK02730.
OMAFHTRDAM.
PhylomeDBO81147.

Enzyme and pathway databases

BioCycARA:AT2G05840-MONOMER.
ARA:GQT-780-MONOMER.

Gene expression databases

GenevestigatorO81147.

Family and domain databases

Gene3D3.60.20.10. 1 hit.
InterProIPR029055. Ntn_hydrolases_N.
IPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
SUPFAMSSF56235. SSF56235. 1 hit.
PROSITEPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSA6B_ARATH
AccessionPrimary (citable) accession number: O81147
Entry history
Integrated into UniProtKB/Swiss-Prot: December 8, 2000
Last sequence update: November 1, 1998
Last modified: June 11, 2014
This is version 117 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Peptidase families

Classification of peptidase families and list of entries

Arabidopsis thaliana

Arabidopsis thaliana: entries and gene names