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Entry version 63 (07 Oct 2020)
Sequence version 1 (16 Aug 2004)
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Protein

Xenotropic and polytropic retrovirus receptor 1 homolog

Gene

xpr1

Organism
Xenopus laevis (African clawed frog)
Status
Reviewed-Annotation score:

Annotation score:3 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

Plays a role in phosphate homeostasis. Mediates phosphate export from the cell. Binds inositol hexakisphosphate (Ins6P) and similar inositol polyphosphates, such as 5-diphospho-inositol pentakisphosphate (5-InsP7); these are important intracellular signaling molecules.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei22Important for inositol polyphosphate bindingBy similarity1
Sitei26Important for inositol polyphosphate bindingBy similarity1

<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>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:
Xenotropic and polytropic retrovirus receptor 1 homolog
<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:xpr1
<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>OrganismiXenopus laevis (African clawed frog)
<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 identifieri8355 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiAmphibiaBatrachiaAnuraPipoideaPipidaeXenopodinaeXenopusXenopus

Organism-specific databases

Xenopus laevis and tropicalis biology and genomics resource

More...
Xenbasei
XB-GENE-1015951, xpr1.L

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

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 – 238CytoplasmicSequence analysisAdd BLAST238
<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>Transmembranei239 – 259HelicalSequence analysisAdd BLAST21
Topological domaini260 – 269ExtracellularSequence analysis10
Transmembranei270 – 290HelicalSequence analysisAdd BLAST21
Topological domaini291 – 314CytoplasmicSequence analysisAdd BLAST24
Transmembranei315 – 335HelicalSequence analysisAdd BLAST21
Topological domaini336 – 338ExtracellularSequence analysis3
Transmembranei339 – 359HelicalSequence analysisAdd BLAST21
Topological domaini360 – 375CytoplasmicSequence analysisAdd BLAST16
Transmembranei376 – 396HelicalSequence analysisAdd BLAST21
Topological domaini397 – 401ExtracellularSequence analysis5
Transmembranei402 – 422HelicalSequence analysisAdd BLAST21
Topological domaini423 – 468CytoplasmicSequence analysisAdd BLAST46
Transmembranei469 – 491HelicalSequence analysisAdd BLAST23
Topological domaini492 – 503ExtracellularSequence analysisAdd BLAST12
Transmembranei504 – 524HelicalSequence analysisAdd BLAST21
Topological domaini525 – 692CytoplasmicSequence analysisAdd BLAST168

<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>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_00003158611 – 692Xenotropic and polytropic retrovirus receptor 1 homologAdd BLAST692

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q6DD44

<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
Q6DD44

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>Domaini1 – 177SPXPROSITE-ProRule annotationAdd BLAST177
Domaini435 – 639EXSPROSITE-ProRule annotationAdd BLAST205

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>Regioni158 – 165Important for inositol polyphosphate bindingBy similarity8

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The SPX domain has high affinity for inositol polyphosphates, such as myo-inositol hexakisphosphate and 5-diphospho-myo-inositol pentakisphosphate (5-InsP7). Its affinity for inorganic phosphate is tow to three orders of magnitude lower.By similarity

<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

KEGG Orthology (KO)

More...
KOi
K24195

Identification of Orthologs from Complete Genome Data

More...
OMAi
FTNGNWT

Database of Orthologous Groups

More...
OrthoDBi
536327at2759

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR004342, EXS_C
IPR004331, SPX_dom

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF03124, EXS, 1 hit
PF03105, SPX, 2 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51380, EXS, 1 hit
PS51382, SPX, 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.

Q6DD44-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MKFTEHLSAH ITPEWRKQYI QYEAFKEMLY AAQDQAPSIE VTDEDTVKRY
60 70 80 90 100
YAKFEEKFFQ TCEKELAKIN TFYSEKLAEA QRRSATLQNE LQSSLDAQRE
110 120 130 140 150
SSVVPGLRQR RKAVFALTHE ERVQHRNIKD LKLAFSEFYL SLILLQNYQN
160 170 180 190 200
LNFTGFRKIL KKHDKILETS RGADWRVAHV EVAPFYTCKK INQLISETET
210 220 230 240 250
VVTNELESGD RQKAMKRLRV PPLGAAQPAP AWTTFRVGLY CGIFMVVNLA
260 270 280 290 300
VVMAGYHFLQ GKNVWPMVRI YRGGFLLIEF LFLLGINTYG WRQAGVNHVL
310 320 330 340 350
IFELNPRNNL SHQHLFEIAG FLGILWCFSL FSCIFGLSIN LQMHLNPLIL
360 370 380 390 400
YGIMLVFLVN PTKTFYYKSR FWLLKLLFRV FTAPFHKVGF ADFWLADQLN
410 420 430 440 450
SLAIILMDLE FMICFYSFEL NWGKSEGLVE SAKSVCNSYS YGVRAVVQCI
460 470 480 490 500
PAWLRFIQCL RRYRDTKRAF PHLVNAGKYS TTFFMVTFAA LYSTHKERNH
510 520 530 540 550
SDAQVFFYLW IVFYFISSCY TLIWDLKMDW GLFDRNAGEN TFLREEIVYP
560 570 580 590 600
QKAYYYCAII QDVILRFAWT IQISVTSLNL FTDAGDVIST VLAPLEVFRR
610 620 630 640 650
FVWNFFRLEN EHLNNCGEFR AVRDISVAPL NADDQTMLEQ MMDQDDGVKN
660 670 680 690
RVKSRIWKRS QSMSLRRPRL SSQSKMKDAK ILIDDTDDEA NT
Length:692
Mass (Da):80,939
Last modified:August 16, 2004 - 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:i082A31BD3F59CCB2
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
BC077785 mRNA Translation: AAH77785.1

NCBI Reference Sequences

More...
RefSeqi
NP_001086930.1, NM_001093461.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
446765

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
xla:446765

<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
BC077785 mRNA Translation: AAH77785.1
RefSeqiNP_001086930.1, NM_001093461.1

3D structure databases

SMRiQ6DD44
ModBaseiSearch...

Proteomic databases

PRIDEiQ6DD44

Genome annotation databases

GeneIDi446765
KEGGixla:446765

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
446765
XenbaseiXB-GENE-1015951, xpr1.L

Phylogenomic databases

KOiK24195
OMAiFTNGNWT
OrthoDBi536327at2759

Family and domain databases

InterProiView protein in InterPro
IPR004342, EXS_C
IPR004331, SPX_dom
PfamiView protein in Pfam
PF03124, EXS, 1 hit
PF03105, SPX, 2 hits
PROSITEiView protein in PROSITE
PS51380, EXS, 1 hit
PS51382, SPX, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiXPR1_XENLA
<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: Q6DD44
<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: January 15, 2008
Last sequence update: August 16, 2004
Last modified: October 7, 2020
This is version 63 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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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