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Entry version 143 (29 Sep 2021)
Sequence version 1 (01 Jan 1998)
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Protein

Type III polyketide synthase A

Gene

PKSA

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score:

Annotation score:5 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

Plant type III polyketide synthases (PKSs) that catalyzes the condensation of malonyl-CoA units with various CoA ester starter molecules to generate a diverse array of natural products including long-chain alkyl alpha-pyrones. Accepts up to C(20) chain-length fatty acyl CoAs as starter substrates, and carries out sequential condensations with malonyl-CoA to produce triketide and tetraketide alpha-pyrones, potential sporopollenin precursors (PubMed:19043200, PubMed:21193570).

Favorite substrates for are midchain- and v-hydroxylated fatty acyl-CoAs (e.g. 12-hydroxyoctadecanoyl-CoA and 16-hydroxyhexadecanoyl-CoA). Required for pollen development and sporopollenin biosynthesis, the major constituent of exine in the outer pollen wall (PubMed:21193570, PubMed:20442277).

In vitro, can use 4-coumaroyl-coenzyme A as substrate to produce bis-noryangonin and fatty acyl-coenzyme A as substrate to produce medium-chain alkyl pyrones. May play a role in both the synthesis of pollen fatty acids and phenolics found in exine (PubMed:20442277).

3 Publications

<p>This subsection of the 'Function' section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

kcat is 0.11 min(-1) with n-dodecanoyl-CoA as substrate for the production of the triketide alpha-pyrone (at pH 7 and 30 degrees Celsius)(PubMed:19043200). kcat is 2.8 ms(-1) with 16-OH-C16-CoA as substrate, 5 ms(-1) with 12-OH-C18-CoA as substrate and 0.13 ms(-1) with C16-CoA as substrate (PubMed:21193570).2 Publications
  1. KM=22.9 µM for n-dodecanoyl-CoA (at pH 7 and 30 degrees Celsius)1 Publication
  2. KM=25 µM for 16-OH-C16-CoA1 Publication
  3. KM=23 µM for 12-OH-C18-CoA1 Publication
  4. KM=48 µM for C16-CoA1 Publication

pH dependencei

Optimum pH is 7 (at 30 degrees Celsius).1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: flavonoid biosynthesis

This protein is involved in the pathway flavonoid biosynthesis, which is part of Secondary metabolite biosynthesis.By similarity
View all proteins of this organism that are known to be involved in the pathway flavonoid biosynthesis and in Secondary metabolite biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei172NucleophilePROSITE-ProRule annotationBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei274Coenzyme A; via carbonyl oxygenBy similarity1
Binding sitei317Coenzyme A; via amide nitrogenBy 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 functionAcyltransferase, Developmental protein, Transferase
Biological processFlavonoid biosynthesis

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
ARA:AT1G02050-MONOMER
MetaCyc:AT1G02050-MONOMER

UniPathway: a resource for the exploration and annotation of metabolic pathways

More...
UniPathwayi
UPA00154

<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:
Type III polyketide synthase A1 Publication (EC:2.3.1.-1 Publication)
Short name:
PKS-A
Alternative name(s):
Hydroxyalkyl alpha-pyrone synthase PKS-A1 Publication
Protein LESS ADHESIVE POLLEN 61 Publication
<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:PKSA1 Publication
Synonyms:LAP6Imported
Ordered Locus Names:At1g02050Imported
ORF Names:T7I23.4Imported
<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 1

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT1G02050

The Arabidopsis Information Resource

More...
TAIRi
locus:2205588, AT1G02050

<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

Endoplasmic reticulum

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the 'Pathology and Biotech' section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Pollen exine layer defects. Reduced accumulation of flavonoid precursors and flavonoids in developing anthers. Plants lacking both PKS-A and PKS-B are completely male sterile, with no apparent exine, thus leading to pollen grain collapse under vacuum. Altered pollen-stigma adhesion.2 Publications

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi132I → T in lap6-1; pollen exine layer defects leading to altered pollen-stigma adhesion. 1 Publication1

<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 '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_00004328401 – 395Type III polyketide synthase AAdd BLAST395

Proteomic databases

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

More...
PaxDbi
O23674

PRoteomics IDEntifications database

More...
PRIDEi
O23674

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
234966

<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

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed in flowers and flower buds (at protein level), and, at very low levels, in roots, seedlings, leaves and stems (PubMed:21193570, PubMed:20442277). Mostly confined to anther tapetal cells (PubMed:23632852).3 Publications

<p>This subsection of the 'Expression' section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified 'at the protein level'.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Most abundant in the youngest flower buds, but levels decline as flowers mature. Specifically and transiently expressed in tapetal cells during microspore development in anthers (at protein level).2 Publications

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
O23674, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
O23674, 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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer (By similarity).

Interacts with 4CLL1/ACOS5 and TKPR1 (PubMed:23632852).

By similarity1 Publication

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
3702.AT1G02050.1

<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
O23674

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

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>Regioni63 – 70Coenzyme A bindingBy similarity8
Regioni224 – 225Substrate bindingBy similarity2
Regioni314 – 317Coenzyme A bindingBy similarity4

<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

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG502QSSY, Eukaryota

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_034992_2_0_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O23674

Identification of Orthologs from Complete Genome Data

More...
OMAi
CLVEGYM

Database of Orthologous Groups

More...
OrthoDBi
950070at2759

Database for complete collections of gene phylogenies

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PhylomeDBi
O23674

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.47.10, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR012328, Chalcone/stilbene_synt_C
IPR001099, Chalcone/stilbene_synt_N
IPR011141, Polyketide_synthase_type-III
IPR016039, Thiolase-like

The PANTHER Classification System

More...
PANTHERi
PTHR11877, PTHR11877, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02797, Chal_sti_synt_C, 1 hit
PF00195, Chal_sti_synt_N, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF000451, PKS_III, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF53901, SSF53901, 2 hits

<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.

O23674-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSNSRMNGVE KLSSKSTRRV ANAGKATLLA LGKAFPSQVV PQENLVEGFL
60 70 80 90 100
RDTKCDDAFI KEKLEHLCKT TTVKTRYTVL TREILAKYPE LTTEGSPTIK
110 120 130 140 150
QRLEIANEAV VEMALEASLG CIKEWGRPVE DITHIVYVSS SEIRLPGGDL
160 170 180 190 200
YLSAKLGLRN DVNRVMLYFL GCYGGVTGLR VAKDIAENNP GSRVLLTTSE
210 220 230 240 250
TTILGFRPPN KARPYDLVGA ALFGDGAAAV IIGADPRECE APFMELHYAV
260 270 280 290 300
QQFLPGTQNV IEGRLTEEGI NFKLGRDLPQ KIEENIEEFC KKLMGKAGDE
310 320 330 340 350
SMEFNDMFWA VHPGGPAILN RLETKLKLEK EKLESSRRAL VDYGNVSSNT
360 370 380 390
ILYVMEYMRD ELKKKGDAAQ EWGLGLAFGP GITFEGLLIR SLTSS
Length:395
Mass (Da):43,617
Last modified:January 1, 1998 - 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:iC9DC274EEF0C6461
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U89959 Genomic DNA Translation: AAC24368.1
CP002684 Genomic DNA Translation: AEE27371.1
BT030313 mRNA Translation: ABO09877.1
DQ062309 Genomic DNA Translation: AAY96717.1
DQ062310 Genomic DNA Translation: AAY96718.1
DQ062318 Genomic DNA Translation: AAY96726.1
DQ062322 Genomic DNA Translation: AAY96730.1
DQ062323 Genomic DNA Translation: AAY96731.1
DQ062324 Genomic DNA Translation: AAY96732.1
DQ062327 Genomic DNA Translation: AAY96735.1
DQ062328 Genomic DNA Translation: AAY96736.1
DQ062331 Genomic DNA Translation: AAY96739.1
DQ062336 Genomic DNA Translation: AAY96744.1
DQ062339 Genomic DNA Translation: AAY96747.1

Protein sequence database of the Protein Information Resource

More...
PIRi
E86152

NCBI Reference Sequences

More...
RefSeqi
NP_171707.1, NM_100085.4

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT1G02050.1; AT1G02050.1; AT1G02050

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
839280

Gramene; a comparative resource for plants

More...
Gramenei
AT1G02050.1; AT1G02050.1; AT1G02050

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT1G02050

<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
U89959 Genomic DNA Translation: AAC24368.1
CP002684 Genomic DNA Translation: AEE27371.1
BT030313 mRNA Translation: ABO09877.1
DQ062309 Genomic DNA Translation: AAY96717.1
DQ062310 Genomic DNA Translation: AAY96718.1
DQ062318 Genomic DNA Translation: AAY96726.1
DQ062322 Genomic DNA Translation: AAY96730.1
DQ062323 Genomic DNA Translation: AAY96731.1
DQ062324 Genomic DNA Translation: AAY96732.1
DQ062327 Genomic DNA Translation: AAY96735.1
DQ062328 Genomic DNA Translation: AAY96736.1
DQ062331 Genomic DNA Translation: AAY96739.1
DQ062336 Genomic DNA Translation: AAY96744.1
DQ062339 Genomic DNA Translation: AAY96747.1
PIRiE86152
RefSeqiNP_171707.1, NM_100085.4

3D structure databases

SMRiO23674
ModBaseiSearch...

Protein-protein interaction databases

STRINGi3702.AT1G02050.1

Proteomic databases

PaxDbiO23674
PRIDEiO23674
ProteomicsDBi234966

Genome annotation databases

EnsemblPlantsiAT1G02050.1; AT1G02050.1; AT1G02050
GeneIDi839280
GrameneiAT1G02050.1; AT1G02050.1; AT1G02050
KEGGiath:AT1G02050

Organism-specific databases

AraportiAT1G02050
TAIRilocus:2205588, AT1G02050

Phylogenomic databases

eggNOGiENOG502QSSY, Eukaryota
HOGENOMiCLU_034992_2_0_1
InParanoidiO23674
OMAiCLVEGYM
OrthoDBi950070at2759
PhylomeDBiO23674

Enzyme and pathway databases

UniPathwayiUPA00154
BioCyciARA:AT1G02050-MONOMER
MetaCyc:AT1G02050-MONOMER

Miscellaneous databases

Protein Ontology

More...
PROi
PR:O23674

Gene expression databases

ExpressionAtlasiO23674, baseline and differential
GenevisibleiO23674, AT

Family and domain databases

Gene3Di3.40.47.10, 2 hits
InterProiView protein in InterPro
IPR012328, Chalcone/stilbene_synt_C
IPR001099, Chalcone/stilbene_synt_N
IPR011141, Polyketide_synthase_type-III
IPR016039, Thiolase-like
PANTHERiPTHR11877, PTHR11877, 1 hit
PfamiView protein in Pfam
PF02797, Chal_sti_synt_C, 1 hit
PF00195, Chal_sti_synt_N, 1 hit
PIRSFiPIRSF000451, PKS_III, 1 hit
SUPFAMiSSF53901, SSF53901, 2 hits

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 nameiPKSA_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: O23674
Secondary accession number(s): Q4JNW9
<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/Swiss-Prot: April 29, 2015
Last sequence update: January 1, 1998
Last modified: September 29, 2021
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 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. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. SIMILARITY comments
    Index of protein domains and families
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