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UniProtKB/Swiss-Prot O95490 (LPHN2_HUMAN)
Last modified
November 25, 2008.
Version 64.
History...
Clusters with 100%,
90%,
50% identity |
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Names and origin
| Protein names | Recommended name: Latrophilin-2 Alternative name(s): Calcium-independent alpha-latrotoxin receptor 2 Latrophilin homolog 1 Lectomedin-1 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 1459 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at transcript level. |
General annotation (Comments)
| Function | Calcium-independent receptor of low affinity for alpha-latrotoxin, an excitatory neurotoxin present in black widow spider venom which triggers massive exocytosis from neurons and neuroendocrine cells. Receptor propably implicated in the regulation of exocytosis By similarity. |
| Subunit structure | Forms a heterodimer, consisting of a large extracellular region (p120) non-covalently linked to a seven-transmembrane moiety (p85) By similarity. |
| Subcellular location | |
| Tissue specificity | Expressed very widely in all normal tissues tested. Expression is variable in tumor cell lines, apparently elevated in some lines and absent or markedly reduced in others. |
| Post-translational modification | Proteolytically cleaved into 2 subunits, an extracellular subunit and a seven-transmembrane subunit By similarity. |
| Sequence similarities | Belongs to the G-protein coupled receptor 2 family. LN-TM7 subfamily. Contains 1 GPS domain. Contains 1 olfactomedin-like domain. Contains 1 SUEL-type lectin domain. |
Ontologies
Keywords | |
|---|---|
| Cellular component | Cell membrane Membrane |
| Coding sequence diversity | Alternative splicing |
| Domain | Signal Transmembrane |
| Ligand | Lectin |
| Molecular function | G-protein coupled receptor Receptor Transducer |
| PTM | Glycoprotein Phosphoprotein |
Gene Ontology (GO) | |
| Biological process | neuropeptide signaling pathway Inferred from electronic annotation. Source: InterPro |
| Cellular component | integral to membrane Ref.1 Non-traceable author statement. Source: UniProtKB plasma membraneInferred from electronic annotation. Source: UniProtKB-KW |
| Molecular function | G-protein coupled receptor activity Inferred from electronic annotation. Source: InterPro latrotoxin receptor activity Ref.1Non-traceable author statement. Source: UniProtKB sugar bindingInferred from electronic annotation. Source: InterPro |
| Complete GO annotation... | |
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: O95490-1) 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: O95490-2) Also known as: Lectomedin-1 gamma; The sequence of this isoform differs from the canonical sequence as follows: 595-607: Missing. 1167-1209: Missing. | ||||||
| Isoform 3 (identifier: O95490-3) Also known as: Lectomedin-1 beta; The sequence of this isoform differs from the canonical sequence as follows: 595-607: Missing. 1134-1136: SRI → DIH 1137-1459: Missing. | ||||||
| Isoform 4 (identifier: O95490-4) Also known as: Lectomedin-1 alpha; The sequence of this isoform differs from the canonical sequence as follows: 595-607: Missing. 1167-1209: Missing. 1210-1233: HSLNNARDTSAMDTLPLNGNFNNS → LTSHGLRAHLQDLYHLELLLGQIA 1234-1459: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 25 | 25 | Potential | ||||||||
| Chain | 26 – 1459 | 1434 | Latrophilin-2 | PRO_0000012910 | |||||||
Regions | |||||||||||
| Topological domain | 39 – 851 | 813 | Extracellular Potential | ||||||||
| Transmembrane | 852 – 872 | 21 | 1 Potential | ||||||||
| Topological domain | 873 – 880 | 8 | Cytoplasmic Potential | ||||||||
| Transmembrane | 881 – 901 | 21 | 2 Potential | ||||||||
| Topological domain | 902 – 907 | 6 | Extracellular Potential | ||||||||
| Transmembrane | 908 – 928 | 21 | 3 Potential | ||||||||
| Topological domain | 929 – 952 | 24 | Cytoplasmic Potential | ||||||||
| Transmembrane | 953 – 973 | 21 | 4 Potential | ||||||||
| Topological domain | 974 – 990 | 17 | Extracellular Potential | ||||||||
| Transmembrane | 991 – 1011 | 21 | 5 Potential | ||||||||
| Topological domain | 1012 – 1037 | 26 | Cytoplasmic Potential | ||||||||
| Transmembrane | 1038 – 1058 | 21 | 6 Potential | ||||||||
| Topological domain | 1059 – 1062 | 4 | Extracellular Potential | ||||||||
| Transmembrane | 1063 – 1083 | 21 | 7 Potential | ||||||||
| Topological domain | 1084 – 1459 | 376 | Cytoplasmic Potential | ||||||||
| Domain | 41 – 130 | 90 | SUEL-type lectin | ||||||||
| Domain | 135 – 394 | 260 | Olfactomedin-like | ||||||||
| Domain | 784 – 836 | 53 | GPS | ||||||||
Sites | |||||||||||
| Site | 824 – 825 | 2 | Cleavage By similarity | ||||||||
Amino acid modifications | |||||||||||
| Modified residue | 1381 | 1 | Phosphoserine By similarity | ||||||||
| Modified residue | 1387 | 1 | Phosphoserine By similarity | ||||||||
| Glycosylation | 99 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 331 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 520 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 629 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 731 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 744 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 787 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 792 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 813 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Disulfide bond | 136 ↔ 318 | By similarity | |||||||||
Natural variations | |||||||||||
| Alternative sequence | 595 – 607 | 13 | Missing in isoform 2, isoform 3 and isoform 4. | VSP_010104 | |||||||
| Alternative sequence | 1134 – 1136 | 3 | SRI → DIH in isoform 3. | VSP_010105 | |||||||
| Alternative sequence | 1137 – 1459 | 323 | Missing in isoform 3. | VSP_010106 | |||||||
| Alternative sequence | 1167 – 1209 | 43 | Missing in isoform 2 and isoform 4. | VSP_010107 | |||||||
| Alternative sequence | 1210 – 1233 | 24 | HSLNN…NFNNS → LTSHGLRAHLQDLYHLELLL GQIA in isoform 4. | VSP_010108 | |||||||
| Alternative sequence | 1234 – 1459 | 226 | Missing in isoform 4. | VSP_010109 | |||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Isolation and characterisation of a human homologue of the latrophilin gene from a region of 1p31.1 implicated in breast cancer." White G.R.M., Varley J.M., Heighway J. Oncogene 17:3513-3519(1998) [PubMed: 10030676] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), TISSUE SPECIFICITY. |
| [2] | "Genomic structure and expression profile of LPHH1, a 7TM gene variably expressed in breast cancer cell lines." White G.R.M., Varley J.M., Heighway J. Biochim. Biophys. Acta 1491:75-92(2000) [PubMed: 10760572] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA]. |
| [3] | Hayflick J.S. Submitted (NOV-1998) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 2; 3 AND 4). |
| [4] | "The DNA sequence and biological annotation of human chromosome 1." Gregory S.G., Barlow K.F., McLay K.E., Kaul R., Swarbreck D., Dunham A., Scott C.E., Howe K.L., Woodfine K., Spencer C.C.A., Jones M.C., Gillson C., Searle S., Zhou Y., Kokocinski F., McDonald L., Evans R., Phillips K. Bentley D.R.Nature 441:315-321(2006) [PubMed: 16710414] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [5] | "Prediction of the coding sequences of unidentified human genes. XI. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro." Nagase T., Ishikawa K., Suyama M., Kikuno R., Miyajima N., Tanaka A., Kotani H., Nomura N., Ohara O. DNA Res. 5:277-286(1998) [PubMed: 9872452] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 439-1459 (ISOFORM 1). Tissue: Brain. |

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