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Protein

Proteasome subunit alpha type-1-A

Gene

PAF1

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

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. Negatively regulates thiol biosynthesis and arsenic tolerance.1 Publication

Catalytic activityi

Cleavage of peptide bonds with very broad specificity.PROSITE-ProRule annotation

GO - Molecular functioni

GO - Biological processi

  • protein catabolic process Source: TAIR
  • response to arsenic-containing substance Source: TAIR
  • ubiquitin-dependent protein catabolic process Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Protease, Threonine protease

Enzyme and pathway databases

BioCyciARA:AT5G42790-MONOMER.
ReactomeiR-ATH-1236978. Cross-presentation of soluble exogenous antigens (endosomes).
R-ATH-174184. Cdc20:Phospho-APC/C mediated degradation of Cyclin A.
R-ATH-349425. Autodegradation of the E3 ubiquitin ligase COP1.
R-ATH-5632684. Hedgehog 'on' state.
R-ATH-68949. Orc1 removal from chromatin.
R-ATH-69017. CDK-mediated phosphorylation and removal of Cdc6.
R-ATH-983168. Antigen processing: Ubiquitination & Proteasome degradation.

Protein family/group databases

MEROPSiT01.976.

Names & Taxonomyi

Protein namesi
Recommended name:
Proteasome subunit alpha type-1-A (EC:3.4.25.1)
Alternative name(s):
20S proteasome alpha subunit F-1
Proteasome 30 kDa subunit
Proteasome component 2A
Short name:
AtPSM30
Proteasome subunit alpha type-6
Protein ARSENIC TOLERANCE 5
Gene namesi
Name:PAF1
Synonyms:ARS5, PRC2A, PRS1, PSM30
Ordered Locus Names:At5g42790
ORF Names:MJB21.17
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chromosome 5

Organism-specific databases

TAIRiAT5G42790.

Subcellular locationi

GO - Cellular componenti

  • cytosol Source: TAIR
  • nucleus Source: UniProtKB-SubCell
  • plasma membrane Source: TAIR
  • proteasome complex Source: TAIR
  • proteasome core complex, alpha-subunit complex Source: InterPro
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus, Proteasome

Pathology & Biotechi

Disruption phenotypei

Enhanced thiol accumulation and arsenic tolerance. Mutation can be complemented by overexpression of PAF2.1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 278278Proteasome subunit alpha type-1-APRO_0000124072Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei1 – 11N-acetylmethionine1 Publication
Cross-linki51 – 51Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)1 Publication

Keywords - PTMi

Acetylation, Isopeptide bond, Ubl conjugation

Proteomic databases

PaxDbiP34066.
PRIDEiP34066.

PTM databases

iPTMnetiP34066.

Expressioni

Developmental stagei

Levels decrease as seedling grow (9-day-old) but is high in 3-week-old plants.1 Publication

Inductioni

Slightly induced by heat-shock and high intensity light.1 Publication

Gene expression databases

GenevisibleiP34066. AT.

Interactioni

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.3 Publications

Protein-protein interaction databases

BioGridi19540. 2 interactions.
IntActiP34066. 1 interaction.
STRINGi3702.AT5G42790.1.

Structurei

3D structure databases

ProteinModelPortaliP34066.
SMRiP34066. Positions 2-232.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the peptidase T1A family.PROSITE-ProRule annotation

Phylogenomic databases

eggNOGiKOG0863. Eukaryota.
COG0638. LUCA.
HOGENOMiHOG000091080.
InParanoidiP34066.
KOiK02725.
OMAiKMFRNQY.
OrthoDBiEOG09360K5D.
PhylomeDBiP34066.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
IPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTiSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
SUPFAMiSSF56235. SSF56235. 1 hit.
PROSITEiPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P34066-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFRNQYDTDV TTWSPTGRLF QVEYAMEAVK QGSAAIGLRS RSHVVLACVN
60 70 80 90 100
KAQSELSSHQ RKIFKVDDHI GVAIAGLTAD GRVLSRYMRS ESINHSFTYE
110 120 130 140 150
SPLPVGRLVV HLADKAQVCT QRSWKRPYGV GLLVGGLDES GAHLYYNCPS
160 170 180 190 200
GNYFEYQAFA IGSRSQAAKT YLERRFESFG DSSREDLIKD AILAVRETLQ
210 220 230 240 250
GETLKSSLCT VAILGVDEPF HFLDQEAIQK VIDTFEKVPE EEEGEGEAGE
260 270
GEAEAAEAAP AERGGGVAGD QDVAPMEM
Length:278
Mass (Da):30,476
Last modified:November 2, 2001 - v3
Checksum:i93E1BC4D0EA99F70
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti244 – 2441G → A in AAM61575 (Ref. 6) Curated
Sequence conflicti257 – 2571E → G in AAC32062 (PubMed:9611183).Curated
Sequence conflicti257 – 2571E → G in AAM61575 (Ref. 6) Curated
Sequence conflicti263 – 2631R → Q in AAC32062 (PubMed:9611183).Curated
Sequence conflicti263 – 2631R → Q in AAM61575 (Ref. 6) Curated
Sequence conflicti267 – 2671V → G in AAC32062 (PubMed:9611183).Curated
Sequence conflicti267 – 2671V → G in AAM61575 (Ref. 6) Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M98495 Unassigned DNA. Translation: AAA16326.1.
AF043526 mRNA. Translation: AAC32062.1.
AB007647 Genomic DNA. Translation: BAB10635.1.
CP002688 Genomic DNA. Translation: AED94864.1.
AF375447 mRNA. Translation: AAK53031.1.
AY058128 mRNA. Translation: AAL25544.1.
AY113047 mRNA. Translation: AAM47355.1.
AY085017 mRNA. Translation: AAM61575.1.
PIRiS39900.
T51974.
RefSeqiNP_199093.1. NM_123644.4.
UniGeneiAt.23724.

Genome annotation databases

EnsemblPlantsiAT5G42790.1; AT5G42790.1; AT5G42790.
GeneIDi834290.
GrameneiAT5G42790.1; AT5G42790.1; AT5G42790.
KEGGiath:AT5G42790.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M98495 Unassigned DNA. Translation: AAA16326.1.
AF043526 mRNA. Translation: AAC32062.1.
AB007647 Genomic DNA. Translation: BAB10635.1.
CP002688 Genomic DNA. Translation: AED94864.1.
AF375447 mRNA. Translation: AAK53031.1.
AY058128 mRNA. Translation: AAL25544.1.
AY113047 mRNA. Translation: AAM47355.1.
AY085017 mRNA. Translation: AAM61575.1.
PIRiS39900.
T51974.
RefSeqiNP_199093.1. NM_123644.4.
UniGeneiAt.23724.

3D structure databases

ProteinModelPortaliP34066.
SMRiP34066. Positions 2-232.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi19540. 2 interactions.
IntActiP34066. 1 interaction.
STRINGi3702.AT5G42790.1.

Protein family/group databases

MEROPSiT01.976.

PTM databases

iPTMnetiP34066.

Proteomic databases

PaxDbiP34066.
PRIDEiP34066.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiAT5G42790.1; AT5G42790.1; AT5G42790.
GeneIDi834290.
GrameneiAT5G42790.1; AT5G42790.1; AT5G42790.
KEGGiath:AT5G42790.

Organism-specific databases

TAIRiAT5G42790.

Phylogenomic databases

eggNOGiKOG0863. Eukaryota.
COG0638. LUCA.
HOGENOMiHOG000091080.
InParanoidiP34066.
KOiK02725.
OMAiKMFRNQY.
OrthoDBiEOG09360K5D.
PhylomeDBiP34066.

Enzyme and pathway databases

BioCyciARA:AT5G42790-MONOMER.
ReactomeiR-ATH-1236978. Cross-presentation of soluble exogenous antigens (endosomes).
R-ATH-174184. Cdc20:Phospho-APC/C mediated degradation of Cyclin A.
R-ATH-349425. Autodegradation of the E3 ubiquitin ligase COP1.
R-ATH-5632684. Hedgehog 'on' state.
R-ATH-68949. Orc1 removal from chromatin.
R-ATH-69017. CDK-mediated phosphorylation and removal of Cdc6.
R-ATH-983168. Antigen processing: Ubiquitination & Proteasome degradation.

Miscellaneous databases

PROiP34066.

Gene expression databases

GenevisibleiP34066. AT.

Family and domain databases

Gene3Di3.60.20.10. 1 hit.
InterProiIPR029055. Ntn_hydrolases_N.
IPR000426. Proteasome_asu_N.
IPR023332. Proteasome_suA-type.
IPR001353. Proteasome_sua/b.
[Graphical view]
PfamiPF00227. Proteasome. 1 hit.
PF10584. Proteasome_A_N. 1 hit.
[Graphical view]
SMARTiSM00948. Proteasome_A_N. 1 hit.
[Graphical view]
SUPFAMiSSF56235. SSF56235. 1 hit.
PROSITEiPS00388. PROTEASOME_ALPHA_1. 1 hit.
PS51475. PROTEASOME_ALPHA_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiPSA1A_ARATH
AccessioniPrimary (citable) accession number: P34066
Secondary accession number(s): O81150, Q8LF69
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1994
Last sequence update: November 2, 2001
Last modified: September 7, 2016
This is version 139 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.