Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Entry version 126 (11 Dec 2019)
Sequence version 2 (28 Nov 2006)
Previous versions | rss
Help videoAdd a publicationFeedback
Protein

L-ascorbate peroxidase T, chloroplastic

Gene

APXT

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 transcript 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

Plays a key role in hydrogen peroxide removal.By similarity

Miscellaneous

Binds one cation per subunit; probably K+, but might also be Ca2+.By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

heme bNote: Binds 1 heme b (iron(II)-protoporphyrin IX) group per subunit.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei108Transition state stabilizerPROSITE-ProRule annotation1
<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 sitei112Proton acceptorPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the ‘Description’ field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi241Iron (heme axial ligand)PROSITE-ProRule annotation1
Metal bindingi242Potassium or calciumBy similarity1
Metal bindingi274Potassium or calciumBy similarity1
Metal bindingi281Potassium or calciumBy 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 functionOxidoreductase, Peroxidase
Biological processHydrogen peroxide
LigandCalcium, Heme, Iron, Metal-binding, Potassium

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
ARA:AT1G77490-MONOMER

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
1.11.1.11 399

Protein family/group databases

PeroxiBase, a peroxidase database

More...
PeroxiBasei
1889 AtAPx06

<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:
L-ascorbate peroxidase T, chloroplastic (EC:1.11.1.11)
Alternative name(s):
Thylakoid-bound ascorbate peroxidase
Short name:
AtAPx06
Short name:
tAPX
<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:APXT
Ordered Locus Names:At1g77490
ORF Names:T5M16.8
<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)
<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
AT1G77490

The Arabidopsis Information Resource

More...
TAIRi
locus:2204735 AT1G77490

<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

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei397 – 417HelicalSequence analysisAdd BLAST21

Keywords - Cellular componenti

Chloroplast, Membrane, Plastid, Thylakoid

<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 transit peptide.<p><a href='/help/transit' target='_top'>More...</a></p>Transit peptidei1 – ?ChloroplastSequence analysis
Transit peptidei? – 78ThylakoidSequence analysis
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000026132779 – 426L-ascorbate peroxidase T, chloroplasticAdd BLAST348

Proteomic databases

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

More...
PaxDbi
Q42593

PRoteomics IDEntifications database

More...
PRIDEi
Q42593

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q42593

<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 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

Down-regulated during leaf senescence.1 Publication

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q42593 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q42593 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

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
3702.AT1G77490.1

<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
Q42593

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

Keywords - Domaini

Transit peptide, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG410IG24 Eukaryota
COG0376 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000189824

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q42593

KEGG Orthology (KO)

More...
KOi
K00434

Database of Orthologous Groups

More...
OrthoDBi
1228462at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q42593

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR002016 Haem_peroxidase
IPR010255 Haem_peroxidase_sf
IPR002207 Peroxidase_I
IPR019793 Peroxidases_heam-ligand_BS

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00141 peroxidase, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00459 ASPEROXIDASE
PR00458 PEROXIDASE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48113 SSF48113, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00435 PEROXIDASE_1, 1 hit
PS50873 PEROXIDASE_4, 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_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>Sequence (1+)i

<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.

<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 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.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

Q42593-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSVSLSAASH LLCSSTRVSL SPAVTSSSSS PVVALSSSTS PHSLGSVASS
60 70 80 90 100
SLFPHSSFVL QKKHPINGTS TRMISPKCAA SDAAQLISAK EDIKVLLRTK
110 120 130 140 150
FCHPILVRLG WHDAGTYNKN IEEWPLRGGA NGSLRFEAEL KHAANAGLLN
160 170 180 190 200
ALKLIQPLKD KYPNISYADL FQLASATAIE EAGGPDIPMK YGRVDVVAPE
210 220 230 240 250
QCPEEGRLPD AGPPSPADHL RDVFYRMGLD DKEIVALSGA HTLGRARPDR
260 270 280 290 300
SGWGKPETKY TKTGPGEAGG QSWTVKWLKF DNSYFKDIKE KRDDDLLVLP
310 320 330 340 350
TDAALFEDPS FKNYAEKYAE DVAAFFKDYA EAHAKLSNLG AKFDPPEGIV
360 370 380 390 400
IENVPEKFVA AKYSTGKKEL SDSMKKKIRA EYEAIGGSPD KPLPTNYFLN
410 420
IIIAIGVLVL LSTLFGGNNN SDFSGF
Length:426
Mass (Da):46,092
Last modified:November 28, 2006 - v2
<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:i9205E8E77B73BBAC
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A1P8APU0A0A1P8APU0_ARATH
Thylakoidal ascorbate peroxidase
TAPX At1g77490, T5M16.8, T5M16_8
421Annotation score:

Annotation score:1 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 Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti73M → K in CAA67426 (PubMed:9291097).Curated1

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
X98926 mRNA Translation: CAA67426.1
AC010704 Genomic DNA Translation: AAG51660.1
CP002684 Genomic DNA Translation: AEE35985.1
AK229693 mRNA Translation: BAF01533.1
AY085554 mRNA Translation: AAM62777.1

Protein sequence database of the Protein Information Resource

More...
PIRi
C96804

NCBI Reference Sequences

More...
RefSeqi
NP_177873.1, NM_106398.3

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT1G77490.1; AT1G77490.1; AT1G77490

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
844085

Gramene; a comparative resource for plants

More...
Gramenei
AT1G77490.1; AT1G77490.1; AT1G77490

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT1G77490

<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
X98926 mRNA Translation: CAA67426.1
AC010704 Genomic DNA Translation: AAG51660.1
CP002684 Genomic DNA Translation: AEE35985.1
AK229693 mRNA Translation: BAF01533.1
AY085554 mRNA Translation: AAM62777.1
PIRiC96804
RefSeqiNP_177873.1, NM_106398.3

3D structure databases

SMRiQ42593
ModBaseiSearch...

Protein-protein interaction databases

STRINGi3702.AT1G77490.1

Protein family/group databases

PeroxiBasei1889 AtAPx06

PTM databases

iPTMnetiQ42593

Proteomic databases

PaxDbiQ42593
PRIDEiQ42593

Genome annotation databases

EnsemblPlantsiAT1G77490.1; AT1G77490.1; AT1G77490
GeneIDi844085
GrameneiAT1G77490.1; AT1G77490.1; AT1G77490
KEGGiath:AT1G77490

Organism-specific databases

AraportiAT1G77490
TAIRilocus:2204735 AT1G77490

Phylogenomic databases

eggNOGiENOG410IG24 Eukaryota
COG0376 LUCA
HOGENOMiHOG000189824
InParanoidiQ42593
KOiK00434
OrthoDBi1228462at2759
PhylomeDBiQ42593

Enzyme and pathway databases

BioCyciARA:AT1G77490-MONOMER
BRENDAi1.11.1.11 399

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q42593

Gene expression databases

ExpressionAtlasiQ42593 baseline and differential
GenevisibleiQ42593 AT

Family and domain databases

InterProiView protein in InterPro
IPR002016 Haem_peroxidase
IPR010255 Haem_peroxidase_sf
IPR002207 Peroxidase_I
IPR019793 Peroxidases_heam-ligand_BS
PfamiView protein in Pfam
PF00141 peroxidase, 1 hit
PRINTSiPR00459 ASPEROXIDASE
PR00458 PEROXIDASE
SUPFAMiSSF48113 SSF48113, 1 hit
PROSITEiView protein in PROSITE
PS00435 PEROXIDASE_1, 1 hit
PS50873 PEROXIDASE_4, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiAPXT_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: Q42593
Secondary accession number(s): Q9CAQ6
<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: November 28, 2006
Last sequence update: November 28, 2006
Last modified: December 11, 2019
This is version 126 of the entry and version 2 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. SIMILARITY comments
    Index of protein domains and families
  2. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again