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Entry version 110 (02 Jun 2021)
Sequence version 1 (01 Nov 1999)
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Protein

Boron transporter 4

Gene

BOR4

Organism
Arabidopsis thaliana (Mouse-ear cress)
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 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

Efflux-type boron transporter polarly localized in roots. Boron is essential for maintaining the integrity of plants cell walls.

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

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

Biological processAnion exchange, Ion transport, Transport

<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:
Boron transporter 4
<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:BOR4
Ordered Locus Names:At1g15460
ORF Names:F9L1.41
<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>OrganismiArabidopsis thaliana (Mouse-ear cress)
<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 identifieri3702 [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 lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
<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
  • UP000006548 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 1

Organism-specific databases

Arabidopsis Information Portal

More...
Araporti
AT1G15460

The Arabidopsis Information Resource

More...
TAIRi
locus:2037808, AT1G15460

<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 – 38CytoplasmicSequence analysisAdd BLAST38
<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>Transmembranei39 – 59HelicalSequence analysisAdd BLAST21
Topological domaini60 – 80ExtracellularSequence analysisAdd BLAST21
Transmembranei81 – 101HelicalSequence analysisAdd BLAST21
Topological domaini102 – 126CytoplasmicSequence analysisAdd BLAST25
Transmembranei127 – 147HelicalSequence analysisAdd BLAST21
Topological domaini148 – 160ExtracellularSequence analysisAdd BLAST13
Transmembranei161 – 181HelicalSequence analysisAdd BLAST21
Topological domaini182 – 200CytoplasmicSequence analysisAdd BLAST19
Transmembranei201 – 221HelicalSequence analysisAdd BLAST21
Topological domaini222 – 238ExtracellularSequence analysisAdd BLAST17
Transmembranei239 – 259HelicalSequence analysisAdd BLAST21
Topological domaini260 – 294CytoplasmicSequence analysisAdd BLAST35
Transmembranei295 – 315HelicalSequence analysisAdd BLAST21
Topological domaini316 – 335ExtracellularSequence analysisAdd BLAST20
Transmembranei336 – 356HelicalSequence analysisAdd BLAST21
Topological domaini357 – 477CytoplasmicSequence analysisAdd BLAST121
Transmembranei478 – 498HelicalSequence analysisAdd BLAST21
Topological domaini499 – 565ExtracellularSequence analysisAdd BLAST67
Transmembranei566 – 586HelicalSequence analysisAdd BLAST21
Topological domaini587 – 683CytoplasmicSequence analysisAdd BLAST97

Keywords - Cellular componenti

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_00000792401 – 683Boron transporter 4Add BLAST683

Proteomic databases

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

More...
PaxDbi
Q9XI23

PRoteomics IDEntifications database

More...
PRIDEi
Q9XI23

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
240630

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q9XI23

<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 the distal sides of epidermal cells in the elongation zone of roots.1 Publication

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Up-regulated by boron supply.1 Publication

Gene expression databases

ExpressionAtlas, Differential and Baseline Expression

More...
ExpressionAtlasi
Q9XI23, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q9XI23, AT

<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
3702.AT1G15460.1

<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

<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>Regioni617 – 638DisorderedSequence analysisAdd BLAST22
Regioni661 – 683DisorderedSequence analysisAdd BLAST23

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 biasi663 – 683Basic and acidic residuesSequence analysisAdd BLAST21

<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

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_002289_3_2_1

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9XI23

Identification of Orthologs from Complete Genome Data

More...
OMAi
KSWGTIE

Database of Orthologous Groups

More...
OrthoDBi
265068at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9XI23

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011531, HCO3_transpt_C
IPR003020, HCO3_transpt_euk

The PANTHER Classification System

More...
PANTHERi
PTHR11453, PTHR11453, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00955, HCO3_cotransp, 3 hits

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

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

Q9XI23-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MEEERVDSSK RLFRGIVADL RGRALCYKED WVAGLRSGFG ILAPTTYIFF
60 70 80 90 100
ASALPVIAFG EQLSRDTEGA LSTVETLAST ALCGVIHSIL GGQPLLILGV
110 120 130 140 150
AEPTVLMYVY LYNFAIGRPE LGKQLYLAWA AWVCVWTALL LFVMAILNTA
160 170 180 190 200
DIINRFTRVA GELFGMLISV LFIQQAIKGM VSEFGMPKDE DSKLEKYKFE
210 220 230 240 250
WLYTNGLLGL IFTFGLLYTA LKSRKARSWR YGTGWYRSFI ADYGVPLMVV
260 270 280 290 300
VWTALSFSTP SKLPSGVPRR LFSPLPWDSP SLSHWTVIKD MGKVSPGYIF
310 320 330 340 350
AAFIPALMIA GLYFFDHSVA SQLAQQKEFN LKKPSAYHYD ILLLGFMTLI
360 370 380 390 400
CGLLGLPPSN GVLPQSPMHT KSLAVLKRQL IRRKMVKTAK ESIRKRETSS
410 420 430 440 450
QVYENMQEVF IEMDKSPLAQ TDPSVIIELQ DLKEAVMKSN DEEREGDEES
460 470 480 490 500
GFDPEKHLDA YLPVRVNEQR VSNLLQSLLV AGAVLAMPAI KLIPTSILWG
510 520 530 540 550
YFAYMAIDSL PGNQFFERLT LLFVPTSRRF KVLEGAHASF VEKVPYKSMA
560 570 580 590 600
AFTLLQIFYF GLCYGVTWIP VAGIMFPVPF FLLIAIRQYI LPKLFNPAHL
610 620 630 640 650
RELDAAEYEE IPGTPRNPLE LSFRSNDSKR GVQEGDAEIL DELTTSRGEL
660 670 680
KVRTLNLNED KGNQIYPKEK VKAGDGDMST TRE
Length:683
Mass (Da):76,700
Last modified:November 1, 1999 - 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:i863956AC609BC1C5
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A1P8AU05A0A1P8AU05_ARATH
HCO3-transporter family
BOR4 ATBOR4, REQUIRES HIGH BORON 4, At1g15460, F9L1.41, F9L1_41
577Annotation score:

Annotation score:2 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>
A0A1P8AU17A0A1P8AU17_ARATH
HCO3-transporter family
BOR4 ATBOR4, REQUIRES HIGH BORON 4, At1g15460, F9L1.41, F9L1_41
655Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AC007591 Genomic DNA Translation: AAD39673.1
CP002684 Genomic DNA Translation: AEE29326.1
CP002684 Genomic DNA Translation: ANM60142.1
AY069887 mRNA Translation: AAL47440.1

NCBI Reference Sequences

More...
RefSeqi
NP_001319010.1, NM_001332166.1
NP_172999.1, NM_101415.4

Genome annotation databases

Ensembl plant genome annotation project

More...
EnsemblPlantsi
AT1G15460.1; AT1G15460.1; AT1G15460
AT1G15460.2; AT1G15460.2; AT1G15460

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
838116

Gramene; a comparative resource for plants

More...
Gramenei
AT1G15460.1; AT1G15460.1; AT1G15460
AT1G15460.2; AT1G15460.2; AT1G15460

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ath:AT1G15460

<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
AC007591 Genomic DNA Translation: AAD39673.1
CP002684 Genomic DNA Translation: AEE29326.1
CP002684 Genomic DNA Translation: ANM60142.1
AY069887 mRNA Translation: AAL47440.1
RefSeqiNP_001319010.1, NM_001332166.1
NP_172999.1, NM_101415.4

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

STRINGi3702.AT1G15460.1

PTM databases

iPTMnetiQ9XI23

Proteomic databases

PaxDbiQ9XI23
PRIDEiQ9XI23
ProteomicsDBi240630

Genome annotation databases

EnsemblPlantsiAT1G15460.1; AT1G15460.1; AT1G15460
AT1G15460.2; AT1G15460.2; AT1G15460
GeneIDi838116
GrameneiAT1G15460.1; AT1G15460.1; AT1G15460
AT1G15460.2; AT1G15460.2; AT1G15460
KEGGiath:AT1G15460

Organism-specific databases

AraportiAT1G15460
TAIRilocus:2037808, AT1G15460

Phylogenomic databases

eggNOGiKOG1172, Eukaryota
HOGENOMiCLU_002289_3_2_1
InParanoidiQ9XI23
OMAiKSWGTIE
OrthoDBi265068at2759
PhylomeDBiQ9XI23

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q9XI23

Gene expression databases

ExpressionAtlasiQ9XI23, baseline and differential
GenevisibleiQ9XI23, AT

Family and domain databases

InterProiView protein in InterPro
IPR011531, HCO3_transpt_C
IPR003020, HCO3_transpt_euk
PANTHERiPTHR11453, PTHR11453, 1 hit
PfamiView protein in Pfam
PF00955, HCO3_cotransp, 3 hits

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 nameiBOR4_ARATH
<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: Q9XI23
<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: September 13, 2005
Last sequence update: November 1, 1999
Last modified: June 2, 2021
This is version 110 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 programPlant 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. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. SIMILARITY comments
    Index of protein domains and families
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