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UniProtKB - B3TP03 (CTR2_CHICK)

Entry version 68 (23 Feb 2022)
Sequence version 1 (02 Sep 2008)
Previous versions | rss
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Protein

Cationic amino acid transporter 2

Gene

SLC7A2

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

Low-affinity, high capacity permease involved in the transport of the cationic amino acids (arginine, lysine and ornithine).

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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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

Biological processAmino-acid transport, Transport

Enzyme and pathway databases

SABIO-RK: Biochemical Reaction Kinetics Database

More...SABIO-RKi		B3TP03

<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:
Cationic amino acid transporter 2
Short name:
CAT-2
Short name:
CAT2
Short name:
cCAT-2
Alternative name(s):
Low affinity cationic amino acid transporter 2
Solute carrier family 7 member 2
<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:SLC7A2
Synonyms:ATRC2, CAT2
<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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Archelosauria › Archosauria › Dinosauria › Saurischia › Theropoda › Coelurosauria › Aves › Neognathae › Galloanserae › Galliformes › Phasianidae › Phasianinae › Gallus
<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 – 37CytoplasmicSequence analysisAdd BLAST37
<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>Transmembranei38 – 58HelicalSequence analysisAdd BLAST21
Topological domaini59 – 65ExtracellularSequence analysis7
Transmembranei66 – 86HelicalSequence analysisAdd BLAST21
Topological domaini87 – 103CytoplasmicSequence analysisAdd BLAST17
Transmembranei104 – 124HelicalSequence analysisAdd BLAST21
Topological domaini125 – 162ExtracellularSequence analysisAdd BLAST38
Transmembranei163 – 183HelicalSequence analysisAdd BLAST21
Topological domaini184 – 191CytoplasmicSequence analysis8
Transmembranei192 – 212HelicalSequence analysisAdd BLAST21
Topological domaini213 – 248ExtracellularSequence analysisAdd BLAST36
Transmembranei249 – 269HelicalSequence analysisAdd BLAST21
Topological domaini270 – 289CytoplasmicSequence analysisAdd BLAST20
Transmembranei290 – 310HelicalSequence analysisAdd BLAST21
Topological domaini311 – 339ExtracellularSequence analysisAdd BLAST29
Transmembranei340 – 360HelicalSequence analysisAdd BLAST21
Topological domaini361 – 385CytoplasmicSequence analysisAdd BLAST25
Transmembranei386 – 406HelicalSequence analysisAdd BLAST21
Topological domaini407 – 409ExtracellularSequence analysis3
Transmembranei410 – 430HelicalSequence analysisAdd BLAST21
Topological domaini431 – 489CytoplasmicSequence analysisAdd BLAST59
Transmembranei490 – 510HelicalSequence analysisAdd BLAST21
Topological domaini511 – 522ExtracellularSequence analysisAdd BLAST12
Transmembranei523 – 543HelicalSequence analysisAdd BLAST21
Topological domaini544 – 554CytoplasmicSequence analysisAdd BLAST11
Transmembranei555 – 575HelicalSequence analysisAdd BLAST21
Topological domaini576 – 581ExtracellularSequence analysis6
Transmembranei582 – 602HelicalSequence analysisAdd BLAST21
Topological domaini603 – 654CytoplasmicSequence analysisAdd BLAST52

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_00003752281 – 654Cationic amino acid transporter 2Add BLAST654

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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>Glycosylationi226N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi233N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi239N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Glycoprotein

Proteomic databases

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

More...PaxDbi		B3TP03

PRoteomics IDEntifications database

More...PRIDEi		B3TP03

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed in liver, pectoralis and gastrocnemius.1 Publication

<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		9031.ENSGALP00000041429

<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		B3TP03

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

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>Regioni611 – 654DisorderedSequence analysisAdd BLAST44

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 type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi627 – 654Basic and acidic residuesSequence analysisAdd BLAST28

<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 amino acid-polyamine-organocation (APC) superfamily. Cationic amino acid transporter (CAT) (TC 2.A.3.3) family. [View classification]Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG1286, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		B3TP03

Database for complete collections of gene phylogenies

More...PhylomeDBi		B3TP03

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR002293, AA/rel_permease1
IPR004755, Cat_AA_permease
IPR029485, CAT_C

Pfam protein domain database

More...Pfami		View protein in Pfam
PF13520, AA_permease_2, 1 hit
PF13906, AA_permease_C, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR00906, 2A0303, 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>Sequences (3)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 describes 3 <p>This subsection of the 'Sequence' section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative splicing. AlignAdd to basket
Isoform 1 (identifier: B3TP03-1) [UniParc]FASTAAdd to basket
Also known as: cCAT-2A

This isoform has been chosen as the <p><strong>What is the canonical sequence?</strong><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
MLPCGPALTF VRCLVRKKNI KGEGLEDSLC RCLSTLDLIA LGVGSTLGAG 
        60         70         80         90        100
VYVLAGEVAK SDSGPSIVVS FLIAALASVM AGLCYAEFGA RVPKTGSAYL 
       110        120        130        140        150
YTYVAVGELW AFITGWNLIL SYVIGTSSVA RAWSGTFDEL LGKQISHFFK 
       160        170        180        190        200
TYFKMNYPGL AEYPDFFAVF LILLLSGLLS FGVKESAWVN KIFTAINILV 
       210        220        230        240        250
LLFVMISGFV KGDVDNWRIS EEYLINLSEI AENFSSYKNV TSIYGSGGFM 
       260        270        280        290        300
PYGFTGTLAG AATCFYAFVG FDCIATTGEE VRNPQKAIPI GIVVSLLVCF 
       310        320        330        340        350
MAYFGVSAAL TLMMPYYLLD EKSPLPVAFA YVGWGPAKYV VAVGSLCALS 
       360        370        380        390        400
TSLLGSMFPL PRIVFAMARD GLLFSFLAKV SKRQAPLLAT LTAGVISAIM 
       410        420        430        440        450
AFLFDLKALV DIMSIGTLLA YSLVATCVLI LRYQPSLTYE QPKYSPEKAT 
       460        470        480        490        500
LAASKRESAV SESQINMIQE SHFSLQTLIN PSSLPTEQTA TTVNCFVGLL 
       510        520        530        540        550
AFLVCGLSAL TTYGTHFIAN LEPWSICLLA TLVVSFIVTI LLIQRQPQNQ 
       560        570        580        590        600
QKVAFMVPLL PFLPSLSILV NIYLMVQLSA DTWIRFSIWM ALGFIIYFTY 
       610        620        630        640        650
GIRHSLEGRH SDGDGDSCSE NSGLQEKNPV EEVDEPENAN ESDKFLARER 

TSEC
Length:654
Mass (Da):71,216
Last modified:September 2, 2008 - 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:iAB262A5B8ADC5B27
GO
Isoform 2 (identifier: B3TP03-2) [UniParc]FASTAAdd to basket
Also known as: cCAT-2B

The sequence of this isoform differs from the canonical sequence as follows:
     357-397: MFPLPRIVFA...LATLTAGVIS → IFPMPRVIYA...VATPSSGAVA

Show »
Length:655
Mass (Da):71,218
Checksum:i06747D30335582DC
GO
Isoform 3 (identifier: B3TP03-3) [UniParc]FASTAAdd to basket
Also known as: cCAT-2C

The sequence of this isoform differs from the canonical sequence as follows:
     353-358: LLGSMF → YYGISV
     359-654: Missing.

Note: May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay. Lacks the domain responsible for mediating amino acids transport.Curated
Show »
Length:358
Mass (Da):38,531
Checksum:i29BA7F31C9A944AD
GO

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_037356353 – 358LLGSMF → YYGISV in isoform 3. 1 Publication6
Alternative sequenceiVSP_037357357 – 397MFPLP…AGVIS → IFPMPRVIYAMAKDGLLFKC LAQINSKTKTPLVATPSSGA VA in isoform 2. 1 PublicationAdd BLAST41
Alternative sequenceiVSP_037358359 – 654Missing in isoform 3. 1 PublicationAdd BLAST296

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
EU360448 mRNA Translation: ACA61195.1
EU360449 mRNA Translation: ACA61196.1
EU360450 mRNA Translation: ACA61197.1

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
EU360448 mRNA Translation: ACA61195.1
EU360449 mRNA Translation: ACA61196.1
EU360450 mRNA Translation: ACA61197.1

3D structure databases

SMRiB3TP03
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9031.ENSGALP00000041429

Proteomic databases

PaxDbiB3TP03
PRIDEiB3TP03

Phylogenomic databases

eggNOGiKOG1286, Eukaryota
InParanoidiB3TP03
PhylomeDBiB3TP03

Enzyme and pathway databases

SABIO-RKiB3TP03

Family and domain databases

InterProiView protein in InterPro
IPR002293, AA/rel_permease1
IPR004755, Cat_AA_permease
IPR029485, CAT_C
PfamiView protein in Pfam
PF13520, AA_permease_2, 1 hit
PF13906, AA_permease_C, 1 hit
TIGRFAMsiTIGR00906, 2A0303, 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 nameiCTR2_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: B3TP03
Secondary accession number(s): B3TP04, B3TP05
<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: May 26, 2009
Last sequence update: September 2, 2008
Last modified: February 23, 2022
This is version 68 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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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