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Entry version 97 (18 Sep 2019)
Sequence version 1 (01 May 1999)
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Protein

C-X-C chemokine receptor type 4-A

Gene

cxcr4-a

Organism
Xenopus laevis (African clawed frog)
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

Receptor for the C-X-C chemokine cxcl12/sdf-1. Transduces a signal by increasing the intracellular level of calcium ions. Signaling with cxcl12/sdf-1 mediates the directional movement of mesodermal cells during gastrulation. May play a role in the migration of embryonic presumptive primordial germ cells (pPGCs). May also be involved in regulating the migration of hematopoietic stem cells into the larval liver.3 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei175ChemokineBy similarity1
Binding sitei295ChemokineBy 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>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 functionDevelopmental protein, G-protein coupled receptor, Receptor, Transducer
Biological processGastrulation

<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_and_taxonomy_section">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:
C-X-C chemokine receptor type 4-A
Short name:
CXC-R4-A
Short name:
CXCR-4-A
Short name:
xCXCR41 Publication
Alternative name(s):
Stromal cell-derived factor 1 receptor A
Short name:
SDF-1 receptor A
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:cxcr4-a
Synonyms:cxcr4Imported
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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_and_taxonomy_section">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_and_taxonomy_section">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-489921 cxcr4

<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_location_section">'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 – 44ExtracellularBy similarityAdd BLAST44
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'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>Transmembranei45 – 67Helical; Name=1By similarityAdd BLAST23
Topological domaini68 – 81CytoplasmicBy similarityAdd BLAST14
Transmembranei82 – 103Helical; Name=2By similarityAdd BLAST22
Topological domaini104 – 114ExtracellularBy similarityAdd BLAST11
Transmembranei115 – 134Helical; Name=3By similarityAdd BLAST20
Topological domaini135 – 158CytoplasmicBy similarityAdd BLAST24
Transmembranei159 – 178Helical; Name=4By similarityAdd BLAST20
Topological domaini179 – 202ExtracellularBy similarityAdd BLAST24
Transmembranei203 – 223Helical; Name=5By similarityAdd BLAST21
Topological domaini224 – 248CytoplasmicBy similarityAdd BLAST25
Transmembranei249 – 268Helical; Name=6By similarityAdd BLAST20
Topological domaini269 – 289ExtracellularBy similarityAdd BLAST21
Transmembranei290 – 309Helical; Name=7By similarityAdd BLAST20
Topological domaini310 – 358CytoplasmicBy similarityAdd BLAST49

Keywords - Cellular componenti

Cell membrane, Cytoplasm, Endosome, Lysosome, Membrane, Nucleus

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003794521 – 358C-X-C chemokine receptor type 4-AAdd BLAST358

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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>Glycosylationi16N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi20N-linked (GlcNAc...) asparagineSequence analysis1
<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 bondi32 ↔ 281PROSITE-ProRule annotation
Disulfide bondi113 ↔ 190PROSITE-ProRule annotation

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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

Sulfation is required for efficient binding of cxcl12/sdf-1alpha and promotes its dimerization.By similarity
O- and N-glycosylated.By similarity

Keywords - PTMi

Disulfide bond, Glycoprotein, Sulfation

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q9YGC3

<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 the embryonic nervous system including forebrain, hindbrain and sensory organs (including eye), and in neural crest cells. Also expressed in the dorsal lateral plate, the first site of definitive hematopoiesis in the embryo. Appears in migrating presumptive primordial germ cells (pPGCs) from stage 24. Expressed in the epidermis at stage 40. In the adult, highly expressed in the spleen with lower levels of expression in the liver and very low levels in kidney, heart, skin and brain.2 Publications

<p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

Expression is up-regulated between stages 14-18 (early neurula stages) and remains high until stage 30, decreasing only at stage 45.2 Publications

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer. Can form dimers (By similarity).

By similarity

GO - Molecular functioni

<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
Q9YGC3

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>Regioni1 – 25Important for chemokine binding and signalingBy similarityAdd BLAST25
Regioni98 – 101Chemokine bindingBy similarity4
Regioni117 – 121Chemokine bindingBy similarity5
Regioni139 – 151Involved in dimerization; when bound to chemokineBy similarityAdd BLAST13
Regioni190 – 194Chemokine binding, important for signalingBy similarity5

<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 G-protein coupled receptor 1 family.PROSITE-ProRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

KEGG Orthology (KO)

More...
KOi
K04189

Database of Orthologous Groups

More...
OrthoDBi
773026at2759

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR022726 Chemokine_CXCR4_N_dom
IPR000355 Chemokine_rcpt
IPR001277 CXCR4/ACKR2
IPR000276 GPCR_Rhodpsn
IPR017452 GPCR_Rhodpsn_7TM

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00001 7tm_1, 1 hit
PF12109 CXCR4_N, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00657 CCCHEMOKINER
PR00645 CXCCHMKINER4
PR00237 GPCRRHODOPSN

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00237 G_PROTEIN_RECEP_F1_1, 1 hit
PS50262 G_PROTEIN_RECEP_F1_2, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

Q9YGC3-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDGFSGGIDI NIFDGNSTEN GSGDFEDFIE PCFMHENSDF NRIFLPTIYS
60 70 80 90 100
FIFLLGIIGN GLVVVVMGYQ KKSRTMTDKY RLHLSVADLL FVFTLPFWSV
110 120 130 140 150
DAAIGWYFKE FLCKAVHVIY TVNLYSSVLI LAFISLDRYL AIVHATNSQG
160 170 180 190 200
SRKMLADKVV YAGVWLPALL LTVPDLVFAR VSDENGQFVC DRIYPIENRE
210 220 230 240 250
TWTVGFRFLH ITVGLILPGL IILICYCVII SKLSHSKGHQ KRKALKTTVI
260 270 280 290 300
LILAFFACWL PYYVCLTTDT FMLLGLVKGD CIWENTLHMA ISITEALAFF
310 320 330 340 350
HCCLNPILYA FLGAKFKTSA QNAFTSVSRG SSLKILSKKR AGLSSVSTES

ESSSFHSS
Length:358
Mass (Da):40,079
Last modified:May 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:i2E9EB448AE40ECB1
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
Y17894 mRNA Translation: CAA76923.1
Y17895 Genomic DNA Translation: CAA76924.1
BC073603 mRNA Translation: AAH73603.1

NCBI Reference Sequences

More...
RefSeqi
NP_001131053.1, NM_001137581.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
100192360

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
xla:100192360

<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
Y17894 mRNA Translation: CAA76923.1
Y17895 Genomic DNA Translation: CAA76924.1
BC073603 mRNA Translation: AAH73603.1
RefSeqiNP_001131053.1, NM_001137581.1

3D structure databases

SMRiQ9YGC3
ModBaseiSearch...

Protein family/group databases

Information system for G protein-coupled receptors (GPCRs)

More...
GPCRDBi
Search...

Proteomic databases

PRIDEiQ9YGC3

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi100192360
KEGGixla:100192360

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
100192360
XenbaseiXB-GENE-489921 cxcr4

Phylogenomic databases

KOiK04189
OrthoDBi773026at2759

Family and domain databases

InterProiView protein in InterPro
IPR022726 Chemokine_CXCR4_N_dom
IPR000355 Chemokine_rcpt
IPR001277 CXCR4/ACKR2
IPR000276 GPCR_Rhodpsn
IPR017452 GPCR_Rhodpsn_7TM
PfamiView protein in Pfam
PF00001 7tm_1, 1 hit
PF12109 CXCR4_N, 1 hit
PRINTSiPR00657 CCCHEMOKINER
PR00645 CXCCHMKINER4
PR00237 GPCRRHODOPSN
PROSITEiView protein in PROSITE
PS00237 G_PROTEIN_RECEP_F1_1, 1 hit
PS50262 G_PROTEIN_RECEP_F1_2, 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 nameiCXR4A_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: Q9YGC3
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 7, 2009
Last sequence update: May 1, 1999
Last modified: September 18, 2019
This is version 97 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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