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Entry version 132 (02 Jun 2021)
Sequence version 2 (11 Feb 2002)
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Protein

Transferrin receptor protein 1

Gene

TFRC

Organism
Gallus gallus (Chicken)
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

Cellular uptake of iron occurs via receptor-mediated endocytosis of ligand-occupied transferrin receptor into specialized endosomes (By similarity).

Endosomal acidification leads to iron release. The apotransferrin-receptor complex is then recycled to the cell surface with a return to neutral pH and the concomitant loss of affinity of apotransferrin for its receptor. Transferrin receptor is necessary for development of erythrocytes and the nervous system (By similarity).

Acts as a lipid sensor that regulates mitochondrial fusion by regulating activation of the JNK pathway (By similarity).

When dietary levels of stearate (C18:0) are low, promotes activation of the JNK pathway, resulting in HUWE1-mediated ubiquitination and subsequent degradation of the mitofusin MFN2 and inhibition of mitochondrial fusion (By similarity).

When dietary levels of stearate (C18:0) are high, TFRC stearoylation inhibits activation of the JNK pathway and thus degradation of the mitofusin MFN2 (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 functionReceptor
Biological processEndocytosis

Protein family/group databases

MEROPS protease database

More...
MEROPSi
M28.972

<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:
Transferrin receptor protein 1
Short name:
TR
Short name:
TfR
Short name:
TfR1
Short name:
Trfr
<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:TFRC
<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>OrganismiGallus gallus (Chicken)
<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 identifieri9031 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiArchelosauriaArchosauriaDinosauriaSaurischiaTheropodaCoelurosauriaAvesNeognathaeGalloanseraeGalliformesPhasianidaePhasianinaeGallus
<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
  • UP000000539 <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: Unplaced

<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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini1 – 70CytoplasmicSequence analysisAdd BLAST70
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'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>Transmembranei71 – 91Helical; Signal-anchor for type II membrane proteinSequence analysisAdd BLAST21
Topological domaini92 – 776ExtracellularSequence analysisAdd BLAST685

Keywords - Cellular componenti

Cell membrane, Membrane

<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_00001741351 – 776Transferrin receptor protein 1Add BLAST776

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 residuei23PhosphoserineBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position(s) and the type of covalently attached lipid group(s).<p><a href='/help/lipid' target='_top'>More...</a></p>Lipidationi70S-palmitoyl cysteineBy similarity1
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi101InterchainBy similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">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>Glycosylationi261N-linked (GlcNAc...) asparagineBy similarity1
Glycosylationi326N-linked (GlcNAc...) asparagineBy similarity1
Glycosylationi391N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi738N-linked (GlcNAc...) asparagineSequence analysis1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">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

Stearoylated (By similarity). Stearoylation does not affect iron uptake (By similarity).By similarity
N- and O-glycosylated, phosphorylated and palmitoylated.By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein, Lipoprotein, Palmitate, Phosphoprotein

Proteomic databases

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

More...
PaxDbi
Q90997

<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

Homodimer; disulfide-linked. Binds one transferrin molecule per subunit (By similarity).

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9031.ENSGALP00000012087

<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
Q90997

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>Domaini230 – 322PAAdd BLAST93

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni586 – 776Ligand-bindingBy similarityAdd BLAST191

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi19 – 22Endocytosis signal4
Motifi662 – 664Cell attachment siteSequence analysis3

<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 peptidase M28 family. M28B subfamily.Curated

Keywords - Domaini

Signal-anchor, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG2195, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q90997

Identification of Orthologs from Complete Genome Data

More...
OMAi
VEPKTEC

Database of Orthologous Groups

More...
OrthoDBi
804230at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q90997

Family and domain databases

Conserved Domains Database

More...
CDDi
cd02128, PA_TfR, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.20.930.40, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003137, PA_domain
IPR007484, Peptidase_M28
IPR039373, Peptidase_M28B
IPR029513, TfR
IPR007365, TFR-like_dimer_dom
IPR036757, TFR-like_dimer_dom_sf
IPR037324, TfR1/2_PA

The PANTHER Classification System

More...
PANTHERi
PTHR10404, PTHR10404, 1 hit
PTHR10404:SF26, PTHR10404:SF26, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02225, PA, 1 hit
PF04389, Peptidase_M28, 1 hit
PF04253, TFR_dimer, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF47672, SSF47672, 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%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>Sequencei

<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.

Q90997-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDHARAALSN LFSVEPMSYT RFSIARQTDG DNSHVEMKLS ADDEEGGDIE
60 70 80 90 100
RPEHMHVSMA QPQRNGKRLC FLVIAAVLLL LIGFLIGYLS YRGRIELAAR
110 120 130 140 150
CQDGSGGCEI TPTASYLVDG EGTVEEEIQG PPVIFWPELK AMLSKKLSAK
160 170 180 190 200
NLVDNLRWRV GVDSFEAGEA EDTNMATYIH EEFRNFLDKV WNDEHYIKLQ
210 220 230 240 250
VRGSTKNQVS ISINGKEEIL ETPDAIVAYS ESGSVSGKPV YVNYGLKKDF
260 270 280 290 300
EIIQKVVASL NGTIVIVRAG KITLAEKVAN AKEAGAAGVL MYVDSLMYGI
310 320 330 340 350
TDTLIPFGHA HLGTGDPYTP GFPSFNHTQF PPVESSGLPH IAVQTISSSA
360 370 380 390 400
AARLFSKMDG DTCSEGWKGA IHSCKVTTKQ ESQIMVKLDV NNSMKDRKIL
410 420 430 440 450
NIFGAIQGFE EPDRYVVIGA QRDSWGPGVA KAGTGTAILL ELARVISDIV
460 470 480 490 500
KNEGYKPRRS IIFASWSAGD YGAVGATEWL EGYSAMLHAK AFTYISLDAP
510 520 530 540 550
VLGASHVKIS ASPLLYMLLG SIMKGVKNPA AVSESLYNRL GPDWVKAVVP
560 570 580 590 600
LGLDNAAFPF LAYSGIPVLS FGFYNKDEEY RFLDTKGDTL ENLRKIDNLD
610 620 630 640 650
ALLAAAAEVA GQAALRLTHD HELFLDIGRY SEELLAYQEE FLPYIKEVRE
660 670 680 690 700
LGLTLDWLFF ARGDFQRAVT ALRRDIANSD GENRVIRRAL NDRMMKVEYD
710 720 730 740 750
FLSPYLSPKD VPFRHIFFGK GPHTLRSLVE HLQLLKTNRS SVDLNLLREQ
760 770
LALATWTIKG AANALGGDIW ETDNEF
Length:776
Mass (Da):85,659
Last modified:February 11, 2002 - 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:iDB293BAC41ED0623
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 CAA39035 differs from that shown. Reason: Frameshift. The correct sequence is shown in fig.1 of PubMed:1874449.Curated

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural varianti581R → H in bursal lymphoma. 1
Natural varianti736K → Q in bursal lymphoma. 1

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
X55348 mRNA Translation: CAA39035.1 Frameshift.

Protein sequence database of the Protein Information Resource

More...
PIRi
JH0570

NCBI Reference Sequences

More...
RefSeqi
NP_990587.2, NM_205256.2

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
396191

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
gga:396191

<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
X55348 mRNA Translation: CAA39035.1 Frameshift.
PIRiJH0570
RefSeqiNP_990587.2, NM_205256.2

3D structure databases

SMRiQ90997
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9031.ENSGALP00000012087

Protein family/group databases

MEROPSiM28.972

Proteomic databases

PaxDbiQ90997

Genome annotation databases

GeneIDi396191
KEGGigga:396191

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
7037

Phylogenomic databases

eggNOGiKOG2195, Eukaryota
InParanoidiQ90997
OMAiVEPKTEC
OrthoDBi804230at2759
PhylomeDBiQ90997

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q90997

Family and domain databases

CDDicd02128, PA_TfR, 1 hit
Gene3Di1.20.930.40, 1 hit
InterProiView protein in InterPro
IPR003137, PA_domain
IPR007484, Peptidase_M28
IPR039373, Peptidase_M28B
IPR029513, TfR
IPR007365, TFR-like_dimer_dom
IPR036757, TFR-like_dimer_dom_sf
IPR037324, TfR1/2_PA
PANTHERiPTHR10404, PTHR10404, 1 hit
PTHR10404:SF26, PTHR10404:SF26, 1 hit
PfamiView protein in Pfam
PF02225, PA, 1 hit
PF04389, Peptidase_M28, 1 hit
PF04253, TFR_dimer, 1 hit
SUPFAMiSSF47672, SSF47672, 1 hit

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 nameiTFR1_CHICK
<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: Q90997
<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: February 11, 2002
Last sequence update: February 11, 2002
Last modified: June 2, 2021
This is version 132 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 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

Documents

  1. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
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