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Entry version 160 (16 Oct 2019)
Sequence version 1 (01 Oct 1996)
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Protein

Homeobox protein Nkx-2.1

Gene

Nkx2-1

Organism
Mus musculus (Mouse)
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

Transcription factor that binds and activates the promoter of thyroid specific genes such as thyroglobulin, thyroperoxidase, and thyrotropin receptor. Crucial in the maintenance of the thyroid differentiation phenotype. May play a role in lung development and surfactant homeostasis. Forms a regulatory loop with GRHL2 that coordinates lung epithelial cell morphogenesis and differentiation (PubMed:22955271). Activates the transcription of GNRHR and plays a role in enhancing the circadian oscillation of its gene expression. Represses the transcription of the circadian transcriptional repressor NR1D1 (PubMed:22356123).By similarity2 Publications

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section specifies the position and type of each DNA-binding domain present within the protein.<p><a href='/help/dna_bind' target='_top'>More...</a></p>DNA bindingi161 – 220HomeoboxPROSITE-ProRule annotationAdd BLAST60

<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 functionActivator, DNA-binding, Repressor
Biological processBiological rhythms, Transcription, Transcription regulation

<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:
Homeobox protein Nkx-2.1
Alternative name(s):
Thyroid nuclear factor 1
Thyroid transcription factor 1
Short name:
TTF-1
Thyroid-specific enhancer-binding protein
Short name:
T/EBP
<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:Nkx2-1Imported
Synonyms:Nkx-2.1, Titf1, Ttf1
<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>OrganismiMus musculus (Mouse)
<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 identifieri10090 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
<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
  • UP000000589 <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 12

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...
MGIi
MGI:108067 Nkx2-1

<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 Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics 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 ‘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_00000493441 – 372Homeobox protein Nkx-2.1Add BLAST372

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 residuei255PhosphoserineBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Phosphorylated on serine residues by STK3/MST2.By similarity

Keywords - PTMi

Phosphoprotein

Proteomic databases

MaxQB - The MaxQuant DataBase

More...
MaxQBi
P50220

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

More...
PaxDbi
P50220

PRoteomics IDEntifications database

More...
PRIDEi
P50220

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
P50220

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
P50220

<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

Thyroid, lung and brain.

<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

Expressed in lung at least from to 9.5 dpc to adulthood.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSMUSG00000001496 Expressed in 80 organ(s), highest expression level in thyroid gland

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
P50220 MM

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Interacts with WWTR1.

By similarity

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
204207, 12 interactors

Protein interaction database and analysis system

More...
IntActi
P50220, 1 interactor

STRING: functional protein association networks

More...
STRINGi
10090.ENSMUSP00000001536

<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

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SMRi
P50220

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

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 biasi234 – 244Poly-GlyAdd BLAST11
Compositional biasi247 – 254Poly-Gln8
Compositional biasi295 – 304Poly-Ala10

<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 NK-2 homeobox family.Curated

Keywords - Domaini

Homeobox

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0842 Eukaryota
ENOG410XR21 LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000161107

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000231923

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P50220

KEGG Orthology (KO)

More...
KOi
K09342

Identification of Orthologs from Complete Genome Data

More...
OMAi
MGHNGTV

Database of Orthologous Groups

More...
OrthoDBi
1209625at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P50220

TreeFam database of animal gene trees

More...
TreeFami
TF351204

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00086 homeodomain, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR009057 Homeobox-like_sf
IPR017970 Homeobox_CS
IPR001356 Homeobox_dom
IPR020479 Homeobox_metazoa

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00046 Homeodomain, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00024 HOMEOBOX

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00389 HOX, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF46689 SSF46689, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00027 HOMEOBOX_1, 1 hit
PS50071 HOMEOBOX_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>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P50220-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSMSPKHTTP FSVSDILSPL EESYKKVGME GGGLGAPLAA YRQGQAAPPA
60 70 80 90 100
AAMQQHAVGH HGAVTAAYHM TAAGVPQLSH SAVGGYCNGN LGNMSELPPY
110 120 130 140 150
QDTMRNSASG PGWYGANPDP RFPAISRFMG PASGMNMSGM GGLGSLGDVS
160 170 180 190 200
KNMAPLPSAP RRKRRVLFSQ AQVYELERRF KQQKYLSAPE REHLASMIHL
210 220 230 240 250
TPTQVKIWFQ NHRYKMKRQA KDKAAQQQLQ QDSGGGGGGG GGAGCPQQQQ
260 270 280 290 300
AQQQSPRRVA VPVLVKDGKP CQAGAPAPGA ASLQSHAQQQ AQQQAQAAQA
310 320 330 340 350
AAAAISVGSG GAGLGAHPGH QPGSAGQSPD LAHHAASPAG LQGQVSSLSH
360 370
LNSSGSDYGA MSCSTLLYGR TW
Length:372
Mass (Da):38,570
Last modified:October 1, 1996 - 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:i377B5CE9B709412F
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U19755 Genomic DNA Translation: AAA86100.1
BC080868 mRNA Translation: AAH80868.1

The Consensus CDS (CCDS) project

More...
CCDSi
CCDS25922.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S53724

NCBI Reference Sequences

More...
RefSeqi
NP_033411.3, NM_009385.3

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSMUST00000001536; ENSMUSP00000001536; ENSMUSG00000001496
ENSMUST00000178477; ENSMUSP00000136103; ENSMUSG00000001496

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
21869

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
mmu:21869

UCSC genome browser

More...
UCSCi
uc007npf.3 mouse

<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
U19755 Genomic DNA Translation: AAA86100.1
BC080868 mRNA Translation: AAH80868.1
CCDSiCCDS25922.1
PIRiS53724
RefSeqiNP_033411.3, NM_009385.3

3D structure databases

SMRiP50220
ModBaseiSearch...

Protein-protein interaction databases

BioGridi204207, 12 interactors
IntActiP50220, 1 interactor
STRINGi10090.ENSMUSP00000001536

PTM databases

iPTMnetiP50220
PhosphoSitePlusiP50220

Proteomic databases

MaxQBiP50220
PaxDbiP50220
PRIDEiP50220

Genome annotation databases

EnsembliENSMUST00000001536; ENSMUSP00000001536; ENSMUSG00000001496
ENSMUST00000178477; ENSMUSP00000136103; ENSMUSG00000001496
GeneIDi21869
KEGGimmu:21869
UCSCiuc007npf.3 mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
7080
MGIiMGI:108067 Nkx2-1

Phylogenomic databases

eggNOGiKOG0842 Eukaryota
ENOG410XR21 LUCA
GeneTreeiENSGT00940000161107
HOGENOMiHOG000231923
InParanoidiP50220
KOiK09342
OMAiMGHNGTV
OrthoDBi1209625at2759
PhylomeDBiP50220
TreeFamiTF351204

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...
ChiTaRSi
Nkx2-1 mouse

Protein Ontology

More...
PROi
PR:P50220

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSMUSG00000001496 Expressed in 80 organ(s), highest expression level in thyroid gland
GenevisibleiP50220 MM

Family and domain databases

CDDicd00086 homeodomain, 1 hit
InterProiView protein in InterPro
IPR009057 Homeobox-like_sf
IPR017970 Homeobox_CS
IPR001356 Homeobox_dom
IPR020479 Homeobox_metazoa
PfamiView protein in Pfam
PF00046 Homeodomain, 1 hit
PRINTSiPR00024 HOMEOBOX
SMARTiView protein in SMART
SM00389 HOX, 1 hit
SUPFAMiSSF46689 SSF46689, 1 hit
PROSITEiView protein in PROSITE
PS00027 HOMEOBOX_1, 1 hit
PS50071 HOMEOBOX_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 nameiNKX21_MOUSE
<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: P50220
<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: October 1, 1996
Last sequence update: October 1, 1996
Last modified: October 16, 2019
This is version 160 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
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