Q8IWK6 (GP125_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 102.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Probable G-protein coupled receptor 125 | ||||
| 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 | 1321 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Orphan receptor. |
| Subunit structure | Interacts with DLG1. Ref.5 |
| Subcellular location | |
| Domain | Binds to DLG1 through its PDZ-binding motif By similarity. |
| Sequence similarities | Belongs to the G-protein coupled receptor 2 family. LN-TM7 subfamily. Contains 1 GPS domain. Contains 1 Ig-like (immunoglobulin-like) domain. Contains 5 LRR (leucine-rich) repeats. Contains 1 LRRCT domain. |
| Sequence caution | The sequence AAH35645.1 differs from that shown. Reason: Contaminating sequence. Potential poly-A sequence. |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Cell membrane Membrane |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Domain | Immunoglobulin domain Leucine-rich repeat Repeat Signal Transmembrane Transmembrane helix |
| Molecular function | G-protein coupled receptor Receptor Transducer |
| PTM | Glycoprotein |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | neuropeptide signaling pathway Inferred from electronic annotation. Source: InterPro |
| Cellular_component | external side of plasma membrane Inferred from electronic annotation. Source: Compara integral to membraneTraceable author statement PubMed 15203201. Source: GDB |
| Molecular_function | G-protein coupled receptor activity Traceable author statement PubMed 15203201. Source: GDB |
| Complete GO annotation... | |
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q8IWK6-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: Q8IWK6-2) The sequence of this isoform differs from the canonical sequence as follows: 604-616: NTIVEASIQLPPS → VCYILQSFKTIYS 617-1321: Missing. | ||||||
| Note: No experimental confirmation available. | ||||||
| Isoform 3 (identifier: Q8IWK6-3) The sequence of this isoform differs from the canonical sequence as follows: 1-134: MEPPGRRRGR...FWGLSSLKRL → MMRVMPCQV 603-620: Missing. | ||||||
| Note: No experimental confirmation available. | ||||||
| Isoform 4 (identifier: Q8IWK6-4) The sequence of this isoform differs from the canonical sequence as follows: 1-10: MEPPGRRRGR → MPLKRNNSKY 11-236: Missing. 604-607: NTIV → GKFR 608-1321: Missing. | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 33 | 33 | Potential | ||||||
| Chain | 34 – 1321 | 1288 | Probable G-protein coupled receptor 125 | PRO_0000012900 | |||||
Regions | |||||||||
| Topological domain | 34 – 761 | 728 | Extracellular Potential | ||||||
| Transmembrane | 762 – 782 | 21 | Helical; Name=1; Potential | ||||||
| Topological domain | 783 – 796 | 14 | Cytoplasmic Potential | ||||||
| Transmembrane | 797 – 817 | 21 | Helical; Name=2; Potential | ||||||
| Topological domain | 818 – 826 | 9 | Extracellular Potential | ||||||
| Transmembrane | 827 – 847 | 21 | Helical; Name=3; Potential | ||||||
| Topological domain | 848 – 876 | 29 | Cytoplasmic Potential | ||||||
| Transmembrane | 877 – 897 | 21 | Helical; Name=4; Potential | ||||||
| Topological domain | 898 – 919 | 22 | Extracellular Potential | ||||||
| Transmembrane | 920 – 940 | 21 | Helical; Name=5; Potential | ||||||
| Topological domain | 941 – 996 | 56 | Cytoplasmic Potential | ||||||
| Transmembrane | 997 – 1017 | 21 | Helical; Name=6; Potential | ||||||
| Topological domain | 1018 – 1024 | 7 | Extracellular Potential | ||||||
| Transmembrane | 1025 – 1045 | 21 | Helical; Name=7; Potential | ||||||
| Topological domain | 1046 – 1321 | 276 | Cytoplasmic Potential | ||||||
| Repeat | 82 – 103 | 22 | LRR 1 | ||||||
| Repeat | 106 – 127 | 22 | LRR 2 | ||||||
| Repeat | 130 – 151 | 22 | LRR 3 | ||||||
| Repeat | 154 – 175 | 22 | LRR 4 | ||||||
| Domain | 187 – 237 | 51 | LRRCT | ||||||
| Domain | 242 – 340 | 99 | Ig-like | ||||||
| Repeat | 594 – 620 | 27 | LRR 5 | ||||||
| Domain | 698 – 749 | 52 | GPS | ||||||
| Motif | 1319 – 1321 | 3 | PDZ-binding Potential | ||||||
Amino acid modifications | |||||||||
| Glycosylation | 81 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 98 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 159 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 206 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 301 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 332 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 433 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 453 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 592 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 652 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 687 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 728 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 821 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 134 | 134 | MEPPG…SLKRL → MMRVMPCQV in isoform 3. | VSP_010738 | |||||
| Alternative sequence | 1 – 10 | 10 | MEPPGRRRGR → MPLKRNNSKY in isoform 4. | VSP_010743 | |||||
| Alternative sequence | 11 – 236 | 226 | Missing in isoform 4. | VSP_010744 | |||||
| Alternative sequence | 603 – 620 | 18 | Missing in isoform 3. | VSP_010740 | |||||
| Alternative sequence | 604 – 616 | 13 | NTIVE…QLPPS → VCYILQSFKTIYS in isoform 2. | VSP_010741 | |||||
| Alternative sequence | 604 – 607 | 4 | NTIV → GKFR in isoform 4. | VSP_010745 | |||||
| Alternative sequence | 608 – 1321 | 714 | Missing in isoform 4. | VSP_010746 | |||||
| Alternative sequence | 617 – 1321 | 705 | Missing in isoform 2. | VSP_010742 | |||||
| Natural variant | 1043 | 1 | V → M. Corresponds to variant rs9002 [ dbSNP | Ensembl ]. | VAR_033971 | |||||
| Natural variant | 1166 | 1 | V → G. Corresponds to variant rs3814416 [ dbSNP | Ensembl ]. | VAR_033972 | |||||
Experimental info | |||||||||
| Sequence conflict | 537 | 1 | S → P in BC026009. Ref.4 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "There exist at least 30 human G-protein-coupled receptors with long Ser/Thr-rich N-termini." Fredriksson R., Gloriam D.E.I., Hoeglund P.J., Lagerstroem M.C., Schioeth H.B. Biochem. Biophys. Res. Commun. 301:725-734(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 3). |
| [2] | "The secreted protein discovery initiative (SPDI), a large-scale effort to identify novel human secreted and transmembrane proteins: a bioinformatics assessment." Clark H.F., Gurney A.L., Abaya E., Baker K., Baldwin D.T., Brush J., Chen J., Chow B., Chui C., Crowley C., Currell B., Deuel B., Dowd P., Eaton D., Foster J.S., Grimaldi C., Gu Q., Hass P.E. Gray A.M.Genome Res. 13:2265-2270(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). |
| [3] | "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]. |
| [4] | "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] (ISOFORMS 1 AND 4). Tissue: Eye and Liver. |
| [5] | "Direct binding of the human homologue of the Drosophila disc large tumor suppressor gene to seven-pass transmembrane proteins, tumor endothelial marker 5 (TEM5), and a novel TEM5-like protein." Yamamoto Y., Irie K., Asada M., Mino A., Mandai K., Takai Y. Oncogene 23:3889-3897(2004) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH DLG1. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AY181243 mRNA. Translation: AAO27355.1. AY358306 mRNA. Translation: AAQ88673.1. AC093735 Genomic DNA. No translation available. AC093814 Genomic DNA. No translation available. BC026009 mRNA. No translation available. BC035645 mRNA. Translation: AAH35645.1. Sequence problems. |
| IPI | IPI00452590. IPI00452591. IPI00452592. IPI00452593. |
| RefSeq | NP_660333.2. NM_145290.3. |
| UniGene | Hs.99195. |
3D structure databases | |
| ProteinModelPortal | Q8IWK6. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | 9606.ENSP00000334952. |
Protein family/group databases | |
| MEROPS | S63.021. |
| GPCRDB | Search... |
PTM databases | |
| PhosphoSite | Q8IWK6. |
Polymorphism databases | |
| DMDM | 50400542. |
Proteomic databases | |
| PaxDb | Q8IWK6. |
| PRIDE | Q8IWK6. |
Protocols and materials databases | |
| DNASU | 166647. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000334304; ENSP00000334952; ENSG00000152990. ENST00000502482; ENSP00000421006; ENSG00000152990. ENST00000508133; ENSP00000422606; ENSG00000152990. |
| GeneID | 166647. |
| KEGG | hsa:166647. |
| UCSC | uc003gqm.1. human. uc003gqn.1. human. uc003gqo.3. human. uc010ieo.1. human. |
Organism-specific databases | |
| CTD | 166647. |
| GeneCards | GC04M022346. |
| HGNC | HGNC:13839. GPR125. |
| HPA | HPA008904. |
| MIM | 612303. gene. |
| neXtProt | NX_Q8IWK6. |
| PharmGKB | PA134919579. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG307919. |
| HOGENOM | HOG000112767. |
| HOVERGEN | HBG051777. |
| InParanoid | Q8IWK6. |
| KO | K08462. |
| OMA | HHIPVNV. |
| OrthoDB | EOG42820R. |
Gene expression databases | |
| ArrayExpress | Q8IWK6. |
| Bgee | Q8IWK6. |
| CleanEx | HS_GPR125. |
| Genevestigator | Q8IWK6. |
| GermOnline | ENSG00000152990. Homo sapiens. |
Family and domain databases | |
| Gene3D | 2.60.40.10. 1 hit. |
| InterPro | IPR000483. Cys-rich_flank_reg_C. IPR017981. GPCR_2-like. IPR001879. GPCR_2_extracellular_dom. IPR000832. GPCR_2_secretin-like. IPR000203. GPS_dom. IPR007110. Ig-like_dom. IPR013783. Ig-like_fold. IPR013098. Ig_I-set. IPR003599. Ig_sub. IPR001611. Leu-rich_rpt. IPR003591. Leu-rich_rpt_typical-subtyp. [Graphical view] |
| Pfam | PF00002. 7tm_2. 1 hit. PF01825. GPS. 1 hit. PF02793. HRM. 1 hit. PF07679. I-set. 1 hit. [Graphical view] |
| SMART | SM00303. GPS. 1 hit. SM00409. IG. 1 hit. SM00369. LRR_TYP. 3 hits. SM00082. LRRCT. 1 hit. [Graphical view] |
| PROSITE | PS00649. G_PROTEIN_RECEP_F2_1. False negative. PS00650. G_PROTEIN_RECEP_F2_2. False negative. PS50227. G_PROTEIN_RECEP_F2_3. 1 hit. PS50261. G_PROTEIN_RECEP_F2_4. 1 hit. PS50221. GPS. 1 hit. PS50835. IG_LIKE. 1 hit. PS51450. LRR. 4 hits. [Graphical view] |
| ProtoNet | Search... |
Other | |
| ChiTaRS | GPR125. human. |
| GenomeRNAi | 166647. |
| NextBio | 88603. |
| SOURCE | Search... |
Entry information
| Entry name | GP125_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q8IWK6 Secondary accession number(s): Q6UXK9, Q86SQ5, Q8TC55 | ||||||||
| 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 4 Human chromosome 4: 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
