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Entry version 105 (02 Jun 2021)
Sequence version 2 (28 Mar 2003)
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Protein

Anion exchange protein 4

Gene

SLC4A9

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Probable apical anion exchanger of the beta-intercalated cells of kidney. May participate in HCO3- secretion.

1 Publication

<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

<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 processAnion exchange, Antiport, Ion transport, Transport

Protein family/group databases

Transport Classification Database

More...
TCDBi
2.A.31.2.5, the anion exchanger (ae) family

<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:
Anion exchange protein 4
Short name:
AE 4
Short name:
Anion exchanger 4
Alternative name(s):
Solute carrier family 4 member 9
<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:SLC4A9
Synonyms:AE4
<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>OrganismiOryctolagus cuniculus (Rabbit)
<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 identifieri9986 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
<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
  • UP000001811 <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 – 386CytoplasmicSequence analysisAdd BLAST386
<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>Transmembranei387 – 407HelicalSequence analysisAdd BLAST21
Transmembranei415 – 435HelicalSequence analysisAdd BLAST21
Transmembranei438 – 458HelicalSequence analysisAdd BLAST21
Transmembranei472 – 492HelicalSequence analysisAdd BLAST21
Transmembranei503 – 523HelicalSequence analysisAdd BLAST21
Topological domaini524 – 595ExtracellularSequence analysisAdd BLAST72
Transmembranei596 – 616HelicalSequence analysisAdd BLAST21
Transmembranei637 – 657HelicalSequence analysisAdd BLAST21
Topological domaini658 – 683CytoplasmicSequence analysisAdd BLAST26
Transmembranei684 – 704HelicalSequence analysisAdd BLAST21
Transmembranei730 – 750HelicalSequence analysisAdd BLAST21
Transmembranei785 – 804HelicalSequence analysisAdd BLAST20
Transmembranei847 – 867HelicalSequence analysisAdd BLAST21
Transmembranei871 – 891HelicalSequence analysisAdd BLAST21

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_00000792241 – 955Anion exchange protein 4Add BLAST955

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 bondi538 ↔ 540By 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>Glycosylationi548N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi572N-linked (GlcNAc...) asparagineSequence analysis1
Disulfide bondi581 ↔ 593By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q9GKY1

<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

Highly expressed in kidney. Expressed in certain types of cells in the kidney cortex.

<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
9986.ENSOCUP00000013683

<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
Q9GKY1

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>Regioni20 – 50DisorderedSequence analysisAdd BLAST31
Regioni154 – 190DisorderedSequence analysisAdd BLAST37
Regioni331 – 352DisorderedSequence analysisAdd BLAST22
Regioni387 – 955Membrane (anion exchange)Add BLAST569
Regioni918 – 955DisorderedSequence analysisAdd BLAST38

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 biasi175 – 189Polar residuesSequence analysisAdd BLAST15

<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

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG1172, Eukaryota

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9GKY1

Database of Orthologous Groups

More...
OrthoDBi
265068at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.930.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR013769, Band3_cytoplasmic_dom
IPR011531, HCO3_transpt_C
IPR003020, HCO3_transpt_euk
IPR003024, Na/HCO3_transpt
IPR016152, PTrfase/Anion_transptr

The PANTHER Classification System

More...
PANTHERi
PTHR11453, PTHR11453, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07565, Band_3_cyto, 2 hits
PF00955, HCO3_cotransp, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01231, HCO3TRNSPORT
PR01232, NAHCO3TRSPRT

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF55804, SSF55804, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00834, ae, 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 (2)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 2 <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: Q9GKY1-1) [UniParc]FASTAAdd to basket
Also known as: AE4a

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MKLPGQEELE AACACENVPV GQLDSGPSSG PCPDDPSDTG SRELGPPEDP
60 70 80 90 100
PLFLQLNELL GWPQTLEWRE MGRWVLFEEK LEVDAGRWSA PHVPTLALPS
110 120 130 140 150
LQNLRSLLAE GLVLLDCPAQ NLLELVEQVT RVESLSPELR GQLQALLLQR
160 170 180 190 200
PQHHTQTTGS RPCWGPAQSR KAAHNKEAPM QQQCQSPLRQ KLPPGAEAGA
210 220 230 240 250
VLAGELGFLA QPLAAFVRLR DPVWLGPLTE VPLPSRFFCL LLGPPMLGKG
260 270 280 290 300
YHELGRAAAV LLSDPHFQWS VRRASNLHDL LTALDAFLEE VTVLPPGRWD
310 320 330 340 350
PTARIPPPRC LPSRHKRPPL HLQKVKGLSV PHRTQAEDRH RNGPLAPSPE
360 370 380 390 400
LQRTGRLFGG LVQDVRRKAS WYPSDFSDAL HPQCVSAVLY IYLATVTNAI
410 420 430 440 450
TFGGLLGDAT DGAQGVLESL LGTAVAGAAF CLMAGQPLTV LSSTGPVLVF
460 470 480 490 500
ERLLFAFCRD YSLDYLPFRL WVGIWVAVFC LALVATEASV LVRYFTRFTE
510 520 530 540 550
EGFCALISLI FIYDAVGKML NLAHAYPIQR PGSLAYGCLC QFPGPGGNES
560 570 580 590 600
QWTRPRPQSR DDLLSVDLGL VNASLLPPHE CVQQGGYPRG PGCHTVPDIA
610 620 630 640 650
FFSLLLFLTS FLFAIALKHM KTSRFFPSVV RKVLSDFSSI LAILLGCGLD
660 670 680 690 700
ALLGLAMPKL MVPREFKPTL PGRGWLVPPF GANPWWLSVA AALPALLLSI
710 720 730 740 750
LIFMDQQITA VILNRVEYRL RKGAGFHLDL FCVALLMLLT SVLGLPWYVS
760 770 780 790 800
ATVLSLAHMD SLRRESRACA PGEPHSFLGI REQRLTGLAV FTLTGVSIFL
810 820 830 840 850
APVLKFIPMP VLYGIFLYMG VAALSSIQFM KRVQLMLMPA KHQPDLLLLR
860 870 880 890 900
HVPLSRVHLF TAIQLACLGL LWIIKSTPAA IIFPLMLLGL VGVRKALEWV
910 920 930 940 950
FSPQELLWLD ELMPEEERNV PEKGLEPGHS FSGSDSEDSE LMYQPKAPEI

NISVN
Length:955
Mass (Da):105,033
Last modified:March 28, 2003 - 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:i04E595A2BFC415B7
GO
Isoform 2 (identifier: Q9GKY1-2) [UniParc]FASTAAdd to basket
Also known as: AE4b

The sequence of this isoform differs from the canonical sequence as follows:
     317-332: Missing.

Show »
Length:939
Mass (Da):103,245
Checksum:iC9C1F61FEBED9CA1
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_007088317 – 332Missing in isoform 2. 1 PublicationAdd BLAST16

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
AB038263 mRNA Translation: BAB18935.1
AB038264 mRNA Translation: BAB18936.1

NCBI Reference Sequences

More...
RefSeqi
NP_001075474.1, NM_001082005.1 [Q9GKY1-1]

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100008621

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ocu:100008621

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
AB038263 mRNA Translation: BAB18935.1
AB038264 mRNA Translation: BAB18936.1
RefSeqiNP_001075474.1, NM_001082005.1 [Q9GKY1-1]

3D structure databases

SMRiQ9GKY1
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000013683

Protein family/group databases

TCDBi2.A.31.2.5, the anion exchanger (ae) family

Proteomic databases

PRIDEiQ9GKY1

Genome annotation databases

GeneIDi100008621
KEGGiocu:100008621

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
83697

Phylogenomic databases

eggNOGiKOG1172, Eukaryota
InParanoidiQ9GKY1
OrthoDBi265068at2759

Family and domain databases

Gene3Di3.40.930.10, 1 hit
InterProiView protein in InterPro
IPR013769, Band3_cytoplasmic_dom
IPR011531, HCO3_transpt_C
IPR003020, HCO3_transpt_euk
IPR003024, Na/HCO3_transpt
IPR016152, PTrfase/Anion_transptr
PANTHERiPTHR11453, PTHR11453, 1 hit
PfamiView protein in Pfam
PF07565, Band_3_cyto, 2 hits
PF00955, HCO3_cotransp, 1 hit
PRINTSiPR01231, HCO3TRNSPORT
PR01232, NAHCO3TRSPRT
SUPFAMiSSF55804, SSF55804, 1 hit
TIGRFAMsiTIGR00834, ae, 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 nameiB3A4_RABIT
<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: Q9GKY1
Secondary accession number(s): Q9GKY2
<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: March 28, 2003
Last sequence update: March 28, 2003
Last modified: June 2, 2021
This is version 105 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. SIMILARITY comments
    Index of protein domains and families
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