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Entry version 128 (07 Apr 2021)
Sequence version 1 (01 Mar 2002)
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Protein

Polypyrimidine tract-binding protein 1

Gene

PTBP1

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score:

Annotation score:3 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 role in pre-mRNA splicing and in the regulation of alternative splicing events. Activates exon skipping of its own pre-mRNA during muscle cell differentiation. Binds to the polypyrimidine tract of introns. May promote RNA looping when bound to two separate polypyrimidine tracts in the same pre-mRNA. May promote the binding of U2 snRNP to pre-mRNA. Cooperates with RAVER1 to modulate switching between mutually exclusive exons during maturation of the TPM1 pre-mRNA. Represses the splicing of MAPT/Tau exon 10 (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

  • mRNA binding Source: GO_Central

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 functionActivator, Repressor, RNA-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%5Fand%5Ftaxonomy%5Fsection">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 1
Short name:
PTB
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:PTBP1
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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>OrganismiBos taurus (Bovine)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 identifieri9913 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaArtiodactylaRuminantiaPecoraBovidaeBovinaeBos
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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
  • UP000009136 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">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 7

Organism-specific databases

Vertebrate Gene Nomenclature Database

More...
VGNCi
VGNC:52809, PTBP1

<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

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 '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_00002329311 – 531Polypyrimidine tract-binding protein 1Add BLAST531

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 residuei1N-acetylmethionineBy similarity1
Modified residuei16PhosphoserineBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki65Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)By similarity
Modified residuei127PhosphotyrosineBy similarity1
Modified residuei138PhosphothreonineBy similarity1
Modified residuei141PhosphoserineBy similarity1
Cross-linki218Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)By similarity
Modified residuei433PhosphoserineBy similarity1

Keywords - PTMi

Acetylation, Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

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

More...
PaxDbi
Q8WN55

PeptideAtlas

More...
PeptideAtlasi
Q8WN55

PRoteomics IDEntifications database

More...
PRIDEi
Q8WN55

<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

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSBTAG00000045828, Expressed in placenta and 18 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q8WN55, baseline and differential

<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%5Fsection">'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%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer.

Part of a ternary complex containing KHSRP, PTBP1, PTBP2 and HNRPH1.

Interacts with RAVER1 and SFPQ (By similarity).

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9913.ENSBTAP00000054889

<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

Biological Magnetic Resonance Data Bank

More...
BMRBi
Q8WN55

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
Q8WN55

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%5Fand%5Fdomains%5Fsection">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>Domaini59 – 143RRM 1PROSITE-ProRule annotationAdd BLAST85
Domaini184 – 260RRM 2PROSITE-ProRule annotationAdd BLAST77
Domaini337 – 411RRM 3PROSITE-ProRule annotationAdd BLAST75
Domaini454 – 529RRM 4PROSITE-ProRule annotationAdd BLAST76

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi316 – 323Poly-Ala8

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1190, Eukaryota

Ensembl GeneTree

More...
GeneTreei
ENSGT00990000203586

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_015171_7_1_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q8WN55

Identification of Orthologs from Complete Genome Data

More...
OMAi
NQALMQM

Database of Orthologous Groups

More...
OrthoDBi
1545178at2759

TreeFam database of animal gene trees

More...
TreeFami
TF319824

Family and domain databases

Conserved Domains Database

More...
CDDi
cd12777, RRM1_PTBP1, 1 hit
cd12693, RRM2_PTBP1_like, 1 hit
cd12695, RRM3_PTBP1, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.30.70.330, 4 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR006536, HnRNP-L/PTB
IPR012677, Nucleotide-bd_a/b_plait_sf
IPR034798, PTBP1/2/3_RRM2
IPR021790, PTBP1_RRM
IPR035000, PTBP1_RRM1
IPR035001, PTBP1_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, 4 hits

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54928, SSF54928, 4 hits

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR01649, hnRNP-L_PTB, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50102, RRM, 4 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%5Flength">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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

Q8WN55-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDGIVPDIAV GTKRGSDELF SACVTNGPFI MSGTSASTAN GNDSKKFKGD
60 70 80 90 100
SRSAGVPSRV IHIRKLPGDV TEGEVISLGL PFGKVTNLLM LKGKNQAFIE
110 120 130 140 150
MHTEEAANTM VNYYTSVTPV LRGQPIYIQF SNHKELKTDS SPNQARAQAA
160 170 180 190 200
LQAVNSVQSG NLALAASAAA VDAGMAMAGQ SPVLRIIVEN LFYPVTLDVL
210 220 230 240 250
HQIFSKFGTV LKIITFTKNN QFQALLQYAD PVSAQHAKLS LDGQNIYNAC
260 270 280 290 300
CTLRIDFSKL TSLNVKYNND KSRDYTRPDL PSGDSQPSLD QTMAAAFGLS
310 320 330 340 350
VPNVHGALAP LAIPSAAAAA AAAGRIAIPG LAGAGNSVLL VSNLNPERVT
360 370 380 390 400
PQSLFILFGV YGDVQRVKVL FNKKENALVQ MADGSQAQLA MSHLNGHKLH
410 420 430 440 450
GKPVRITLSK HQSVQLPREG QEDQGLTKDY GNSPLHRFKK PGSKNFQNIF
460 470 480 490 500
PPSATLHLSN IPPSISEDDL KILFSSNGGI VKGFKFFQKD RKMALIQMGS
510 520 530
VEEAIQALID LHNHDLGENH HLRVSFSKST I
Length:531
Mass (Da):57,105
Last modified:March 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:i99CF43EDA6238133
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 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A3Q1M994A0A3Q1M994_BOVIN
Polypyrimidine tract-binding protei...
PTBP1
557Annotation 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>
A8YXY5A8YXY5_BOVIN
Polypyrimidine tract-binding protei...
PTBP1
446Annotation 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>

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
AF445640 mRNA Translation: AAL38169.1

NCBI Reference Sequences

More...
RefSeqi
NP_776867.1, NM_174442.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSBTAT00000066209; ENSBTAP00000054889; ENSBTAG00000045828

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
282018

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bta:282018

<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
AF445640 mRNA Translation: AAL38169.1
RefSeqiNP_776867.1, NM_174442.3

3D structure databases

BMRBiQ8WN55
SMRiQ8WN55
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000054889

Proteomic databases

PaxDbiQ8WN55
PeptideAtlasiQ8WN55
PRIDEiQ8WN55

Genome annotation databases

EnsembliENSBTAT00000066209; ENSBTAP00000054889; ENSBTAG00000045828
GeneIDi282018
KEGGibta:282018

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
5725
VGNCiVGNC:52809, PTBP1

Phylogenomic databases

eggNOGiKOG1190, Eukaryota
GeneTreeiENSGT00990000203586
HOGENOMiCLU_015171_7_1_1
InParanoidiQ8WN55
OMAiNQALMQM
OrthoDBi1545178at2759
TreeFamiTF319824

Gene expression databases

BgeeiENSBTAG00000045828, Expressed in placenta and 18 other tissues
ExpressionAtlasiQ8WN55, baseline and differential

Family and domain databases

CDDicd12777, RRM1_PTBP1, 1 hit
cd12693, RRM2_PTBP1_like, 1 hit
cd12695, RRM3_PTBP1, 1 hit
Gene3Di3.30.70.330, 4 hits
InterProiView protein in InterPro
IPR006536, HnRNP-L/PTB
IPR012677, Nucleotide-bd_a/b_plait_sf
IPR034798, PTBP1/2/3_RRM2
IPR021790, PTBP1_RRM
IPR035000, PTBP1_RRM1
IPR035001, PTBP1_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, 4 hits
SUPFAMiSSF54928, SSF54928, 4 hits
TIGRFAMsiTIGR01649, hnRNP-L_PTB, 1 hit
PROSITEiView protein in PROSITE
PS50102, RRM, 4 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_BOVIN
<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: Q8WN55
<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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 18, 2006
Last sequence update: March 1, 2002
Last modified: April 7, 2021
This is version 128 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 programChordata 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
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