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Entry version 121 (16 Oct 2019)
Sequence version 1 (01 Oct 2000)
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Protein

Polypyrimidine tract-binding protein homolog 1

Gene

PTB

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 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

Plays a role in pre-mRNA splicing. Binds to the polypyrimidine tract of introns. May promote the binding of U2 snRNP to pre-mRNA (By similarity).By similarity

<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 functionRNA-binding
Biological processmRNA processing, mRNA splicing

<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:
Polypyrimidine tract-binding protein homolog 1
<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:PTB
Ordered Locus Names:At3g01150
ORF Names:T4P13.16
<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
AT3G01150

The Arabidopsis Information Resource

More...
TAIRi
locus:2102142 AT3G01150

<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

Nucleus

<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 <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemovedCombined sources
<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_00000817412 – 399Polypyrimidine tract-binding protein homolog 1Add BLAST398

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei2N-acetylserineCombined sources1

Keywords - PTMi

Acetylation

Proteomic databases

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

More...
PaxDbi
Q9MAC5

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q9MAC5

<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

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q9MAC5 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q9MAC5 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.AT3G01150.1

<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>Domaini17 – 95RRM 1PROSITE-ProRule annotationAdd BLAST79
Domaini109 – 196RRM 2PROSITE-ProRule annotationAdd BLAST88
Domaini242 – 322RRM 3PROSITE-ProRule annotationAdd BLAST81

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1190 Eukaryota
ENOG410XPMZ LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000238077

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9MAC5

KEGG Orthology (KO)

More...
KOi
K14948

Database of Orthologous Groups

More...
OrthoDBi
1545178at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9MAC5

Family and domain databases

Conserved Domains Database

More...
CDDi
cd12686 RRM1_PTBPH1_PTBPH2, 1 hit
cd12691 RRM2_PTBPH1_PTBPH2, 1 hit
cd12690 RRM3_PTBPH1_PTBPH2, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.70.330, 3 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR012677 Nucleotide-bd_a/b_plait_sf
IPR021790 PTBP1_RRM
IPR034792 PTBPH1/PTBPH2_RRM1
IPR034793 PTBPH1/PTBPH2_RRM2
IPR034794 PTBPH1/PTBPH2_RRM3
IPR035979 RBD_domain_sf
IPR000504 RRM_dom

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00076 RRM_1, 1 hit
PF11835 RRM_8, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00360 RRM, 2 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54928 SSF54928, 3 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50102 RRM, 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>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 describes 1 <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> isoform i produced by alternative splicing. AlignAdd to basket
Note: A number of isoforms are produced. According to EST sequences.

This entry has 1 described isoform and 3 potential isoforms that are computationally mapped.Show allAlign All

Isoform 1 (identifier: Q9MAC5-1) [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
MSSSGQTQFR YTQTPSKVVH LRNLPWECVE EELIDLCKRF GKIVNTKSNV
60 70 80 90 100
GANRNQAFVE FADLNQAISM VSYYASSSEP AQIRGKTVYI QYSNRHEIVN
110 120 130 140 150
NQSPGDVPGN VLLVTFEGVE SHEVSIDVIH LVFSAFGFVH KIATFEKAAG
160 170 180 190 200
FQALVQFTDV ETASAARSAL DGRSIPRYLL SAHVGSCSLR MSYSAHTDLN
210 220 230 240 250
IKFQSHRSRD YTNPYLPVNQ TAMDGSMQPA LGADGKKVES QSNVLLGLIE
260 270 280 290 300
NMQYAVTVDV LHTVFSAYGT VQKIAIFEKN GSTQALIQYS DIPTAAMAKE
310 320 330 340 350
ALEGHCIYDG GYCKLRLSYS RHTDLNVKAF SDKSRDYTLP DLSLLVAQKG
360 370 380 390
PAVSGSAPPA GWQNPQAQSQ YSGYGGSPYM YPSSDPNGAS PSGQPPYYG
Length:399
Mass (Da):43,593
Last modified:October 1, 2000 - 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:iA7C556D9B308A8FC
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 are 3 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
B3H7H5B3H7H5_ARATH
Polypyrimidine tract-binding protei...
PTB1 ATPTB1, POLYPYRIMIDINE TRACT-BINDING, PTB, At3g01150, T4P13.16
274Annotation 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>
A0A1I9LSX9A0A1I9LSX9_ARATH
Polypyrimidine tract-binding protei...
PTB1 ATPTB1, POLYPYRIMIDINE TRACT-BINDING, PTB, At3g01150, T4P13.16
314Annotation 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>
Q8RWB0Q8RWB0_ARATH
Polypyrimidine tract-binding protei...
PTB1 ATPTB1, POLYPYRIMIDINE TRACT-BINDING, PTB, At3g01150, T4P13.16
189Annotation 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>

<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 AAC62015 differs from that shown. Reason: Frameshift.Curated

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
AF076924 mRNA Translation: AAC62015.1 Frameshift.
AC008261 Genomic DNA Translation: AAF26159.1
CP002686 Genomic DNA Translation: AEE73616.1

Protein sequence database of the Protein Information Resource

More...
PIRi
T51814

NCBI Reference Sequences

More...
RefSeqi
NP_186764.1, NM_110980.4 [Q9MAC5-1]

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT3G01150.1; AT3G01150.1; AT3G01150 [Q9MAC5-1]

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
821129

Gramene; a comparative resource for plants

More...
Gramenei
AT3G01150.1; AT3G01150.1; AT3G01150 [Q9MAC5-1]

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT3G01150

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
AF076924 mRNA Translation: AAC62015.1 Frameshift.
AC008261 Genomic DNA Translation: AAF26159.1
CP002686 Genomic DNA Translation: AEE73616.1
PIRiT51814
RefSeqiNP_186764.1, NM_110980.4 [Q9MAC5-1]

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

STRINGi3702.AT3G01150.1

PTM databases

iPTMnetiQ9MAC5

Proteomic databases

PaxDbiQ9MAC5

Genome annotation databases

EnsemblPlantsiAT3G01150.1; AT3G01150.1; AT3G01150 [Q9MAC5-1]
GeneIDi821129
GrameneiAT3G01150.1; AT3G01150.1; AT3G01150 [Q9MAC5-1]
KEGGiath:AT3G01150

Organism-specific databases

AraportiAT3G01150
TAIRilocus:2102142 AT3G01150

Phylogenomic databases

eggNOGiKOG1190 Eukaryota
ENOG410XPMZ LUCA
HOGENOMiHOG000238077
InParanoidiQ9MAC5
KOiK14948
OrthoDBi1545178at2759
PhylomeDBiQ9MAC5

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q9MAC5

Gene expression databases

ExpressionAtlasiQ9MAC5 baseline and differential
GenevisibleiQ9MAC5 AT

Family and domain databases

CDDicd12686 RRM1_PTBPH1_PTBPH2, 1 hit
cd12691 RRM2_PTBPH1_PTBPH2, 1 hit
cd12690 RRM3_PTBPH1_PTBPH2, 1 hit
Gene3Di3.30.70.330, 3 hits
InterProiView protein in InterPro
IPR012677 Nucleotide-bd_a/b_plait_sf
IPR021790 PTBP1_RRM
IPR034792 PTBPH1/PTBPH2_RRM1
IPR034793 PTBPH1/PTBPH2_RRM2
IPR034794 PTBPH1/PTBPH2_RRM3
IPR035979 RBD_domain_sf
IPR000504 RRM_dom
PfamiView protein in Pfam
PF00076 RRM_1, 1 hit
PF11835 RRM_8, 1 hit
SMARTiView protein in SMART
SM00360 RRM, 2 hits
SUPFAMiSSF54928 SSF54928, 3 hits
PROSITEiView protein in PROSITE
PS50102 RRM, 2 hits

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 nameiPTBP1_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: Q9MAC5
Secondary accession number(s): O82472
<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: September 13, 2005
Last sequence update: October 1, 2000
Last modified: October 16, 2019
This is version 121 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. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
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