P25106 (CXCR7_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 29, 2013.
Version 133.
History...
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: C-X-C chemokine receptor type 7 Short name=CXC-R7 Short name=CXCR-7 Alternative name(s): Chemokine orphan receptor 1 G-protein coupled receptor 159 G-protein coupled receptor RDC1 homolog Short name=RDC-1 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 362 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Receptor for chemokines CXCL12/SDF1 and CXCL11. Does not elicit classical chemokine receptor signaling; chemokine binding does not activate G-protein-mediated signal transduction but instead induces beta-arrestin recruitment, leading to ligand internalization and activation of MAPK signaling pathway. Acts as a scavenger for CXCL12/SDF1 and, to a lesser extent, for CXCL11. Required for regulation of CXCR4 protein levels in migrating interneurons, thereby adapting their chemokine responsiveness. In glioma cells, transduces signals via MEK/ERK pathway, mediating resistance to apoptosis. Promotes cell growth and survival. Not involved in cell migration, adhesion or proliferation of normal hematopoietic progenitors but activated by CXCL11 in malignant hemapoietic cells, leading to phosphorylation of ERK1/2 (MAPK3/MAPK1) and enhanced cell adhesion and migration. Plays a regulatory role in CXCR4-mediated activation of cell surface integrins by CXCL12. Required for heart valve development. Acts as coreceptor with CXCR4 for a restricted number of HIV isolates. Ref.9 Ref.10 Ref.11 Ref.13 Ref.14 Ref.15 Ref.16 Ref.17 Ref.18 Ref.19 Ref.20 Ref.21 |
| Subunit structure | Homodimer. Can form heterodimers with CXCR4; heterodimerization may regulate CXCR4 signaling activity. Ref.13 Ref.15 Ref.17 |
| Subcellular location | Cell membrane; Multi-pass membrane protein. Cytoplasm › perinuclear region. Early endosome. Recycling endosome By similarity. Note: Localized mainly in perinuclear regions in neurons and in early endosomes in T-lymphocytes and some other cell types, with very low levels detected on the cell surface. May spontaneously cycle between the plasma membrane and endosomal compartments. Ref.14 Ref.20 Ref.22 |
| Tissue specificity | Expressed in monocytes, basophils, B-cells, umbilical vein endothelial cells (HUVEC) and B-lymphoblastoid cells. Lower expression detected in CD4+ T-lymphocytes and natural killer cells. In the brain, detected in endothelial cells and capillaries, and in mature neurons of the frontal cortex and hippocampus. Expressed in tubular formation in the kidney. Highly expressed in astroglial tumor endothelial, microglial and glioma cells. Expressed at low levels in normal CD34+ progenitor cells, but at very high levels in several myeloid malignant cell lines. Expressed in breast carcinomas but not in normal breast tissue (at protein level). Ref.10 Ref.12 Ref.16 Ref.18 Ref.19 Ref.22 |
| Induction | Up-regulated during cell differentiation in glioma cells. Ref.18 |
| Sequence similarities | Belongs to the G-protein coupled receptor 1 family. |
| Caution | Was originally (Ref.1) thought to be the receptor for VIP. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 362 | 362 | C-X-C chemokine receptor type 7 | PRO_0000070101 | |||||||
Regions | |||||||||||
| Topological domain | 1 – 40 | 40 | Extracellular Potential | ||||||||
| Transmembrane | 41 – 61 | 21 | Helical; Name=1; Potential | ||||||||
| Topological domain | 62 – 81 | 20 | Cytoplasmic Potential | ||||||||
| Transmembrane | 82 – 102 | 21 | Helical; Name=2; Potential | ||||||||
| Topological domain | 103 – 118 | 16 | Extracellular Potential | ||||||||
| Transmembrane | 119 – 139 | 21 | Helical; Name=3; Potential | ||||||||
| Topological domain | 140 – 162 | 23 | Cytoplasmic Potential | ||||||||
| Transmembrane | 163 – 183 | 21 | Helical; Name=4; Potential | ||||||||
| Topological domain | 184 – 213 | 30 | Extracellular Potential | ||||||||
| Transmembrane | 214 – 234 | 21 | Helical; Name=5; Potential | ||||||||
| Topological domain | 235 – 252 | 18 | Cytoplasmic Potential | ||||||||
| Transmembrane | 253 – 273 | 21 | Helical; Name=6; Potential | ||||||||
| Topological domain | 274 – 296 | 23 | Extracellular Potential | ||||||||
| Transmembrane | 297 – 319 | 23 | Helical; Name=7; Potential | ||||||||
| Topological domain | 320 – 362 | 43 | Cytoplasmic Potential | ||||||||
Amino acid modifications | |||||||||||
| Glycosylation | 13 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 22 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 39 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Disulfide bond | 117 ↔ 196 | By similarity | |||||||||
Natural variations | |||||||||||
| Natural variant | 219 | 1 | L → W. Corresponds to variant rs10183641 [ dbSNP | Ensembl ]. | VAR_027477 | |||||||
Experimental info | |||||||||||
| Mutagenesis | 145 | 1 | S → A: Does not result in CXCL12-inducible chemotaxis, calcium mobilization or ERK activation, and has no effect on CXCR7-mediated CXCL12 degradation; when associated with V-147. Ref.20 | ||||||||
| Mutagenesis | 147 | 1 | T → V: Does not result in CXCL12-inducible chemotaxis, calcium mobilization or ERK activation, and has no effect on CXCR7-mediated CXCL12 degradation; when associated with A-145. Ref.20 | ||||||||
| Sequence conflict | 9 | 1 | S → A in AAA62370. Ref.1 | ||||||||
| Sequence conflict | 130 | 1 | G → S in AAA62370. Ref.1 | ||||||||
| Sequence conflict | 130 | 1 | G → S in AAB16913. Ref.2 | ||||||||
| Sequence conflict | 130 | 1 | G → S in AAB94130. Ref.3 | ||||||||
| Sequence conflict | 131 | 1 | S → G in AAA62370. Ref.1 | ||||||||
| Sequence conflict | 228 | 1 | I → V in AAH36661. Ref.8 | ||||||||
| Sequence conflict | 360 – 361 | 2 | ST → NA in AAA62370. Ref.1 | ||||||||
Sequences
| ||||||||||||||||||
References
| « Hide 'large scale' references | |
| [1] | "Cloning and expression of the human vasoactive intestinal peptide receptor." Sreedharan S.P., Robichon A., Peterson K.E., Goetzl E.J. Proc. Natl. Acad. Sci. U.S.A. 88:4986-4990(1991) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA]. |
| [2] | "Coding and 3'-noncoding sequence of human RDC1, an orphan G protein-coupled receptor." Oates E.L., Roos B.A., Howard G.A. Submitted (OCT-1996) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. |
| [3] | "Human RDC1 gene." Bi A., Yu L., Zhang Q., Tu Q., Xing Y., Zheng L. Submitted (OCT-1997) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. |
| [4] | "Isolation of cDNA coding for Homo sapiens chemokine orphan receptor 1 (CMKOR1)." Martin A.L., Kaighin V.A., Aronstam R.S. Submitted (JUN-2006) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA]. |
| [5] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Placenta. |
| [6] | "Generation and annotation of the DNA sequences of human chromosomes 2 and 4." Hillier L.W., Graves T.A., Fulton R.S., Fulton L.A., Pepin K.H., Minx P., Wagner-McPherson C., Layman D., Wylie K., Sekhon M., Becker M.C., Fewell G.A., Delehaunty K.D., Miner T.L., Nash W.E., Kremitzki C., Oddy L., Du H. Wilson R.K.Nature 434:724-731(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [7] | Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. Venter J.C.Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [8] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA]. Tissue: Testis. |
| [9] | "RDC1 may not be VIP receptor." Nagata S., Ishihara T., Robberecht P., Libert F., Parmentier M., Christophe J., Vassart G. Trends Pharmacol. Sci. 13:102-103(1992) [PubMed] [Europe PMC] [Abstract] Cited for: DOUBTS ON THE ORIGINAL FUNCTION. |
| [10] | "The chemokine SDF-1/CXCL12 binds to and signals through the orphan receptor RDC1 in T lymphocytes." Balabanian K., Lagane B., Infantino S., Chow K.Y., Harriague J., Moepps B., Arenzana-Seisdedos F., Thelen M., Bachelerie F. J. Biol. Chem. 280:35760-35766(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY. |
| [11] | "A novel chemokine receptor for SDF-1 and I-TAC involved in cell survival, cell adhesion, and tumor development." Burns J.M., Summers B.C., Wang Y., Melikian A., Berahovich R., Miao Z., Penfold M.E., Sunshine M.J., Littman D.R., Kuo C.J., Wei K., McMaster B.E., Wright K., Howard M.C., Schall T.J. J. Exp. Med. 203:2201-2213(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [12] | "Expression and regulation of the orphan receptor RDC1 and its putative ligand in human dendritic and B cells." Infantino S., Moepps B., Thelen M. J. Immunol. 176:2197-2207(2006) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [13] | "Disrupted cardiac development but normal hematopoiesis in mice deficient in the second CXCL12/SDF-1 receptor, CXCR7." Sierro F., Biben C., Martinez-Munoz L., Mellado M., Ransohoff R.M., Li M., Woehl B., Leung H., Groom J., Batten M., Harvey R.P., Martinez-A C., Mackay C.R., Mackay F. Proc. Natl. Acad. Sci. U.S.A. 104:14759-14764(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, HETERODIMERIZATION. |
| [14] | "A crosstalk between intracellular CXCR7 and CXCR4 involved in rapid CXCL12-triggered integrin activation but not in chemokine-triggered motility of human T lymphocytes and CD34+ cells." Hartmann T.N., Grabovsky V., Pasvolsky R., Shulman Z., Buss E.C., Spiegel A., Nagler A., Lapidot T., Thelen M., Alon R. J. Leukoc. Biol. 84:1130-1140(2008) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION. |
| [15] | "CXCR7 heterodimerizes with CXCR4 and regulates CXCL12-mediated G protein signaling." Levoye A., Balabanian K., Baleux F., Bachelerie F., Lagane B. Blood 113:6085-6093(2009) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBUNIT. |
| [16] | "Elucidation of CXCR7-mediated signaling events and inhibition of CXCR4-mediated tumor cell transendothelial migration by CXCR7 ligands." Zabel B.A., Wang Y., Lewen S., Berahovich R.D., Penfold M.E., Zhang P., Powers J., Summers B.C., Miao Z., Zhao B., Jalili A., Janowska-Wieczorek A., Jaen J.C., Schall T.J. J. Immunol. 183:3204-3211(2009) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY. |
| [17] | "AMD3100 is a CXCR7 ligand with allosteric agonist properties." Kalatskaya I., Berchiche Y.A., Gravel S., Limberg B.J., Rosenbaum J.S., Heveker N. Mol. Pharmacol. 75:1240-1247(2009) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBUNIT. |
| [18] | "The chemokine receptor CXCR7 is highly expressed in human glioma cells and mediates antiapoptotic effects." Hattermann K., Held-Feindt J., Lucius R., Muerkoster S.S., Penfold M.E., Schall T.J., Mentlein R. Cancer Res. 70:3299-3308(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY, INDUCTION. |
| [19] | "CXCR7: a new SDF-1-binding receptor in contrast to normal CD34(+) progenitors is functional and is expressed at higher level in human malignant hematopoietic cells." Tarnowski M., Liu R., Wysoczynski M., Ratajczak J., Kucia M., Ratajczak M.Z. Eur. J. Haematol. 85:472-483(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY. |
| [20] | "CXCR7 functions as a scavenger for CXCL12 and CXCL11." Naumann U., Cameroni E., Pruenster M., Mahabaleshwar H., Raz E., Zerwes H.G., Rot A., Thelen M. PLoS ONE 5:E9175-E9175(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, SUBCELLULAR LOCATION, MUTAGENESIS OF SER-145 AND THR-147. |
| [21] | "Beta-arrestin- but not G protein-mediated signaling by the 'decoy' receptor CXCR7." Rajagopal S., Kim J., Ahn S., Craig S., Lam C.M., Gerard N.P., Gerard C., Lefkowitz R.J. Proc. Natl. Acad. Sci. U.S.A. 107:628-632(2010) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [22] | "CXCR7 protein expression in human adult brain and differentiated neurons." Shimizu S., Brown M., Sengupta R., Penfold M.E., Meucci O. PLoS ONE 6:E20680-E20680(2011) [PubMed] [Europe PMC] [Abstract] Cited for: SUBCELLULAR LOCATION, TISSUE SPECIFICITY. |
Web resources
| Atlas of Genetics and Cytogenetics in Oncology and Haematology |
| Wikipedia CXC chemokine receptors entry |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | M64749 mRNA. Translation: AAA62370.1. U73141 Genomic DNA. Translation: AAB18130.1. U67784 mRNA. Translation: AAB16913.1. AF030297 mRNA. Translation: AAB94130.1. DQ822477 mRNA. Translation: ABH01258.1. AK291659 mRNA. Translation: BAF84348.1. AC079611 Genomic DNA. Translation: AAX93086.1. CH471063 Genomic DNA. Translation: EAW71092.1. BC036661 mRNA. Translation: AAH36661.1. |
| IPI | IPI00012733. |
| PIR | A39714. |
| RefSeq | NP_064707.1. NM_020311.2. |
| UniGene | Hs.471751. |
3D structure databases | |
| ProteinModelPortal | P25106. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | P25106. 4 interactions. |
| STRING | 9606.ENSP00000272928. |
Protein family/group databases | |
| GPCRDB | Search... |
PTM databases | |
| PhosphoSite | P25106. |
Polymorphism databases | |
| DMDM | 115502380. |
Proteomic databases | |
| PaxDb | P25106. |
| PeptideAtlas | P25106. |
| PRIDE | P25106. |
Protocols and materials databases | |
| DNASU | 57007. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000272928; ENSP00000272928; ENSG00000144476. |
| GeneID | 57007. |
| KEGG | hsa:57007. |
| UCSC | uc002vwd.3. human. |
Organism-specific databases | |
| CTD | 57007. |
| GeneCards | GC02P237476. |
| HGNC | HGNC:23692. CXCR7. |
| HPA | HPA049718. |
| MIM | 610376. gene. |
| neXtProt | NX_P25106. |
| PharmGKB | PA162383053. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG306050. |
| HOGENOM | HOG000261660. |
| HOVERGEN | HBG106832. |
| InParanoid | P25106. |
| KO | K04304. |
| OMA | YIPFTCQ. |
| PhylomeDB | P25106. |
Enzyme and pathway databases | |
| Reactome | REACT_111102. Signal Transduction. |
| SignaLink | P25106. |
Gene expression databases | |
| Bgee | P25106. |
| CleanEx | HS_CXCR7. |
| Genevestigator | P25106. |
| GermOnline | ENSG00000144476. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR001416. Chemokine_CXCR7. IPR000355. Chemokine_rcpt. IPR000276. GPCR_Rhodpsn. IPR017452. GPCR_Rhodpsn_7TM. [Graphical view] |
| PANTHER | PTHR24227. PTHR24227. 1 hit. PTHR24227:SF34. PTHR24227:SF34. 1 hit. |
| Pfam | PF00001. 7tm_1. 1 hit. [Graphical view] |
| PRINTS | PR00237. GPCRRHODOPSN. PR00646. RDC1ORPHANR. |
| PROSITE | PS00237. G_PROTEIN_RECEP_F1_1. 1 hit. PS50262. G_PROTEIN_RECEP_F1_2. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | CXCR7. human. |
| GenomeRNAi | 57007. |
| NextBio | 62747. |
| SOURCE | Search... |
Entry information
| Entry name | CXCR7_HUMAN | ||||||||
| Accession | Primary (citable) accession number: P25106 Secondary accession number(s): A8K6J4 Q92986 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| 7-transmembrane G-linked receptors List of 7-transmembrane G-linked receptor entries |
| Human chromosome 2 Human chromosome 2: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
