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Entry version 127 (31 Jul 2019)
Sequence version 1 (01 Oct 2002)
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Protein

Peptidyl-prolyl cis-trans isomerase CYP21-2

Gene

CYP21-2

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

Annotation score:4 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

PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides (By similarity).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>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 functionChaperone, Isomerase, Rotamase

<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:
Peptidyl-prolyl cis-trans isomerase CYP21-2 (EC:5.2.1.8)
Short name:
PPIase CYP21-2
Alternative name(s):
Cyclophilin of 21 kDa 2
Cyclophilin-21-2
<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:CYP21-2
Ordered Locus Names:At3g55920
ORF Names:F27K19.100
<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 3

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT3G55920

The Arabidopsis Information Resource

More...
TAIRi
locus:2081993 AT3G55920

<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

Keywords - Cellular componenti

Endoplasmic reticulum

<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 denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 24Sequence analysisAdd BLAST24
<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_000042993525 – 228Peptidyl-prolyl cis-trans isomerase CYP21-2Add BLAST204

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi170N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Glycoprotein

Proteomic databases

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

More...
PaxDbi
Q8L8W5

<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 leaves, flowers, roots and stems.1 Publication

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q8L8W5 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q8L8W5 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

GO - Molecular functioni

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
3702.AT3G55920.1

<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
Q8L8W5

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

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family_and_domains_section">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini62 – 225PPIase cyclophilin-typePROSITE-ProRule annotationAdd BLAST164

<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

Belongs to the cyclophilin-type PPIase family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0865 Eukaryota
COG0652 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000065981

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q8L8W5

KEGG Orthology (KO)

More...
KOi
K01802

Identification of Orthologs from Complete Genome Data

More...
OMAi
RVTDKVF

Database of Orthologous Groups

More...
OrthoDBi
1403619at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q8L8W5

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.40.100.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR029000 Cyclophilin-like_dom_sf
IPR024936 Cyclophilin-type_PPIase
IPR020892 Cyclophilin-type_PPIase_CS
IPR002130 Cyclophilin-type_PPIase_dom

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00160 Pro_isomerase, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF001467 Peptidylpro_ismrse, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00153 CSAPPISMRASE

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50891 SSF50891, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00170 CSA_PPIASE_1, 1 hit
PS50072 CSA_PPIASE_2, 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>Sequences (2)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 describes 2 <p>This subsection of the ‘Sequence’ section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative splicing. AlignAdd to basket
Isoform 1 (identifier: Q8L8W5-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MAITATRLVS LTLLWIVVLF VTLALIQIKL TDVADPSVNE KILDAKLNQV
60 70 80 90 100
GEDLEGVTHK VYFDIQINGS PAGRILIGLF GNIVPKTAEN FRSLCTGEKG
110 120 130 140 150
VGNMGKPLYF KGSSFHRIIP GFMIQGGDFT RGDGRGGESI YGDKFADENF
160 170 180 190 200
KLKHTGPGFL SMANSGPDSN GSQFFITTVT TSWLDGHHVV FGKVLSGMEV
210 220
VRKIEAQGQD SGVPKANVII FASGEVSL
Length:228
Mass (Da):24,506
Last modified:October 1, 2002 - 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:iB096B2E14FACA956
GO
Isoform 2 (identifier: Q8L8W5-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-103: Missing.

Note: No experimental confirmation available.
Show »
Length:125
Mass (Da):13,403
Checksum:i17FF875D44500E49
GO

<p>This subsection of the ‘Sequence’ section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence CAB87846 differs from that shown. Reason: Erroneous gene model prediction.Curated

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_0553881 – 103Missing in isoform 2. 1 PublicationAdd BLAST103

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AY568519 mRNA Translation: AAS75302.1
AL163832 Genomic DNA Translation: CAB87846.1 Sequence problems.
CP002686 Genomic DNA Translation: AEE79457.1
AK176511 mRNA Translation: BAD44274.1
AY088764 mRNA Translation: AAM67079.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T49204

NCBI Reference Sequences

More...
RefSeqi
NP_567029.1, NM_115450.4 [Q8L8W5-1]

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT3G55920.1; AT3G55920.1; AT3G55920 [Q8L8W5-1]

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
824758

Gramene; a comparative resource for plants

More...
Gramenei
AT3G55920.1; AT3G55920.1; AT3G55920 [Q8L8W5-1]

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT3G55920

Keywords - Coding sequence diversityi

Alternative splicing

<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
AY568519 mRNA Translation: AAS75302.1
AL163832 Genomic DNA Translation: CAB87846.1 Sequence problems.
CP002686 Genomic DNA Translation: AEE79457.1
AK176511 mRNA Translation: BAD44274.1
AY088764 mRNA Translation: AAM67079.1
PIRiT49204
RefSeqiNP_567029.1, NM_115450.4 [Q8L8W5-1]

3D structure databases

SMRiQ8L8W5
ModBaseiSearch...

Protein-protein interaction databases

STRINGi3702.AT3G55920.1

Proteomic databases

PaxDbiQ8L8W5

Genome annotation databases

EnsemblPlantsiAT3G55920.1; AT3G55920.1; AT3G55920 [Q8L8W5-1]
GeneIDi824758
GrameneiAT3G55920.1; AT3G55920.1; AT3G55920 [Q8L8W5-1]
KEGGiath:AT3G55920

Organism-specific databases

AraportiAT3G55920
TAIRilocus:2081993 AT3G55920

Phylogenomic databases

eggNOGiKOG0865 Eukaryota
COG0652 LUCA
HOGENOMiHOG000065981
InParanoidiQ8L8W5
KOiK01802
OMAiRVTDKVF
OrthoDBi1403619at2759
PhylomeDBiQ8L8W5

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q8L8W5

Gene expression databases

ExpressionAtlasiQ8L8W5 baseline and differential
GenevisibleiQ8L8W5 AT

Family and domain databases

Gene3Di2.40.100.10, 1 hit
InterProiView protein in InterPro
IPR029000 Cyclophilin-like_dom_sf
IPR024936 Cyclophilin-type_PPIase
IPR020892 Cyclophilin-type_PPIase_CS
IPR002130 Cyclophilin-type_PPIase_dom
PfamiView protein in Pfam
PF00160 Pro_isomerase, 1 hit
PIRSFiPIRSF001467 Peptidylpro_ismrse, 1 hit
PRINTSiPR00153 CSAPPISMRASE
SUPFAMiSSF50891 SSF50891, 1 hit
PROSITEiView protein in PROSITE
PS00170 CSA_PPIASE_1, 1 hit
PS50072 CSA_PPIASE_2, 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 nameiCP21B_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: Q8L8W5
Secondary accession number(s): Q67YF7, Q9LY53
<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: July 9, 2014
Last sequence update: October 1, 2002
Last modified: July 31, 2019
This is version 127 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
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