Q18PE1 (DOK7_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 66.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Web links·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Protein Dok-7 Alternative name(s): Downstream of tyrosine kinase 7 | ||||
| Gene names |
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| 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 | 504 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Probable muscle-intrinsic activator of MUSK that plays an essential role in neuromuscular synaptogenesis. Acts in aneural activation of MUSK and subsequent acetylcholine receptor (AchR) clustering in myotubes. Induces autophosphorylation of MUSK. Ref.5 |
| Subunit structure | Homodimer By similarity. Forms a heterotetramer composed of 2 DOK7 and 2 MUSK molecules which facilitates MUSK trans-autophosphorylation on tyrosine residue and activation By similarity. Interacts (via IRS-type PTB domain) with MUSK (via cytoplasmic part); requires MUSK phosphorylation. Ref.5 |
| Subcellular location | Cell membrane; Peripheral membrane protein By similarity. Cell junction › synapse By similarity. Note: Accumulates at neuromuscular junctions By similarity. |
| Tissue specificity | Preferentially expressed in skeletal muscle and heart. Present in thigh muscle, diaphragm and heart but not in the liver or spleen (at protein level). Ref.1 |
| Domain | The PH domain mediated binding to phospholipids with phosphoinositol headgroups. Affinity is highest for phosphatidyl 3,4,5-trisphosphate, followed by phosphatidylinositol 3,4-bisphosphate and phosphatidylinositol 4,5-bisphosphate By similarity. |
| Involvement in disease | Myasthenia, limb-girdle, familial (LGM) [MIM:254300]: A congenital myasthenic syndrome characterized by a typical 'limb girdle' pattern of muscle weakness with small, simplified neuromuscular junctions but normal acetylcholine receptor and acetylcholinesterase function. |
| Sequence similarities | Contains 1 IRS-type PTB domain. Contains 1 PH domain. |
| Sequence caution | The sequence BAC11367.1 differs from that shown. Reason: Erroneous initiation. |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Cell junction Cell membrane Membrane Synapse |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Disease | Congenital myasthenic syndrome Disease mutation |
| Ligand | Lipid-binding |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | neuromuscular junction development Inferred from electronic annotation. Source: Compara positive regulation of protein tyrosine kinase activityInferred from direct assay Ref.5. Source: UniProtKB receptor clusteringInferred from electronic annotation. Source: Compara |
| Cellular_component | cell junction Inferred from electronic annotation. Source: UniProtKB-KW neuromuscular junctionInferred from electronic annotation. Source: Compara plasma membraneInferred from electronic annotation. Source: UniProtKB-SubCell |
| Molecular_function | phosphatidylinositol binding Inferred from electronic annotation. Source: Compara protein kinase bindingInferred from direct assay Ref.5. Source: UniProtKB |
| Complete GO annotation... | |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q18PE1-1) 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: Q18PE1-2) The sequence of this isoform differs from the canonical sequence as follows: 1-138: Missing. 139-178: VLARDIPPAV...FEGGTRCGYW → MMSSSWPGTS...ADSSLKAGPG | ||||||
| Note: No experimental confirmation available. | ||||||
| Isoform 3 (identifier: Q18PE1-3) The sequence of this isoform differs from the canonical sequence as follows: 500-504: VNPPP → GAAASAPGPA...ELEQRKAAPQ | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 504 | 504 | Protein Dok-7 | PRO_0000250371 | |||||
Regions | |||||||||
| Domain | 4 – 109 | 106 | PH | ||||||
| Domain | 105 – 210 | 106 | IRS-type PTB | ||||||
| Compositional bias | 262 – 359 | 98 | Ser-rich | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 138 | 138 | Missing in isoform 2. | VSP_020633 | |||||
| Alternative sequence | 139 – 178 | 40 | VLARD…RCGYW → MMSSSWPGTSPRLSRGSGSC LTSGATGPCQADSSLKAGPG in isoform 2. | VSP_020634 | |||||
| Alternative sequence | 500 – 504 | 5 | VNPPP → GAAASAPGPATAHSGSPGPV AVDSPGPERPRGESPTYVNI PVSPSSRKQLHYMGLELQEA SEGVRGAGASLYAQIDIMAT ETAHRVGVRHARAREEQLSE LEQRKAAPQ in isoform 3. | VSP_020635 | |||||
| Natural variant | 3 | 1 | E → K in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068750 | |||||
| Natural variant | 31 | 1 | P → T in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068751 | |||||
| Natural variant | 33 | 1 | A → V in LGM; results in reduced stimulation of MUSK autophosphorylation. Ref.5 Ref.7 | VAR_068752 | |||||
| Natural variant | 45 | 1 | S → L Does not affect AChR clusters number or complexity. Ref.8 Ref.9 Corresponds to variant rs62272670 [ dbSNP | Ensembl ]. | VAR_068753 | |||||
| Natural variant | 77 | 1 | T → M in LGM; results in a decrease of branched, c-shaped and perforated AChR clusters. Ref.9 | VAR_068754 | |||||
| Natural variant | 99 | 1 | A → V. Ref.9 Corresponds to variant rs138010842 [ dbSNP | Ensembl ]. | VAR_068755 | |||||
| Natural variant | 109 | 1 | G → C in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068756 | |||||
| Natural variant | 116 | 1 | V → M in LGM. Ref.8 | VAR_068757 | |||||
| Natural variant | 132 | 1 | H → Q in LGM. Ref.7 | VAR_068758 | |||||
| Natural variant | 139 | 1 | V → L in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068759 | |||||
| Natural variant | 146 | 1 | P → L in LGM. Ref.8 | VAR_068760 | |||||
| Natural variant | 157 | 1 | L → R in LGM. Ref.8 | VAR_068761 | |||||
| Natural variant | 158 | 1 | R → Q in LGM; reduced stimulation of MUSK autophosphorylation when associated with A-174; results in a significant reduction of AChR clusters. Ref.5 Ref.9 Corresponds to variant rs6811423 [ dbSNP | Ensembl ]. | VAR_031246 | |||||
| Natural variant | 161 | 1 | G → R in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068762 | |||||
| Natural variant | 166 | 1 | G → R in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068763 | |||||
| Natural variant | 171 | 1 | G → D in LGM; results in a significant reduction of AChR clusters. Ref.9 | VAR_068764 | |||||
| Natural variant | 171 | 1 | G → R in LGM. Ref.8 | VAR_068765 | |||||
| Natural variant | 172 | 1 | G → R in LGM. Ref.8 | VAR_068766 | |||||
| Natural variant | 180 | 1 | G → A in LGM; results in a significant reduction of AChR clusters. Ref.6 Ref.9 | VAR_027544 | |||||
| Natural variant | 180 | 1 | G → V in LGM. Ref.8 | VAR_068767 | |||||
| Natural variant | 197 | 1 | D → N. Ref.9 Corresponds to variant rs16844422 [ dbSNP | Ensembl ]. | VAR_027545 | |||||
| Natural variant | 261 | 1 | R → H. Ref.9 Corresponds to variant rs16844460 [ dbSNP | Ensembl ]. | VAR_027546 | |||||
| Natural variant | 272 | 1 | H → Q. Ref.9 Corresponds to variant rs115614731 [ dbSNP | Ensembl ]. | VAR_068768 | |||||
| Natural variant | 296 | 1 | Q → R. Ref.4 Ref.9 Corresponds to variant rs6811423 [ dbSNP | Ensembl ]. | VAR_027547 | |||||
| Natural variant | 323 | 1 | R → C. Ref.9 Corresponds to variant rs150728781 [ dbSNP | Ensembl ]. | VAR_068769 | |||||
| Natural variant | 379 | 1 | G → R. Corresponds to variant rs6831659 [ dbSNP | Ensembl ]. | VAR_050508 | |||||
| Natural variant | 382 | 1 | E → K. Ref.9 | VAR_068770 | |||||
| Natural variant | 402 | 1 | R → Q. Ref.9 | VAR_068771 | |||||
| Natural variant | 415 | 1 | P → S. Ref.9 Corresponds to variant rs16844464 [ dbSNP | Ensembl ]. | VAR_027548 | |||||
| Natural variant | 427 | 1 | G → D. Corresponds to variant rs2020433 [ dbSNP | Ensembl ]. | VAR_027549 | |||||
| Natural variant | 440 | 1 | A → T. Ref.9 | VAR_068772 | |||||
| Natural variant | 451 | 1 | R → W. Ref.9 Corresponds to variant rs16844470 [ dbSNP | Ensembl ]. | VAR_027550 | |||||
| Natural variant | 461 | 1 | G → D. Ref.2 Ref.4 Ref.9 Corresponds to variant rs9684786 [ dbSNP | Ensembl ]. | VAR_027551 | |||||
| Natural variant | 469 | 1 | P → H in LGM. Ref.7 | VAR_068773 | |||||
| Natural variant | 503 | 1 | P → T. Ref.9 Corresponds to variant rs184556570 [ dbSNP | Ensembl ]. | VAR_068774 | |||||
Experimental info | |||||||||
| Mutagenesis | 30 | 1 | S → W: Reduced stimulation of MUSK autophosphorylation. Ref.5 | ||||||
| Mutagenesis | 32 | 1 | V → A: Reduced stimulation of MUSK autophosphorylation. Ref.5 | ||||||
| Mutagenesis | 174 | 1 | R → A: Reduced stimulation of MUSK autophosphorylation; when associated with Q-158. Ref.5 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "The muscle protein Dok-7 is essential for neuromuscular synaptogenesis." Okada K., Inoue A., Okada M., Murata Y., Kakuta S., Jigami T., Kubo S., Shiraishi H., Eguchi K., Motomura M., Akiyama T., Iwakura Y., Higuchi O., Yamanashi Y. Science 312:1802-1805(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY. |
| [2] | "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] (ISOFORM 2), NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 271-504 (ISOFORM 3), VARIANT ASP-461. Tissue: Brain and Ovary. |
| [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] (ISOFORM 1), VARIANTS ARG-296 AND ASP-461. Tissue: Blood and Mammary gland. |
| [5] | "The cytoplasmic adaptor protein Dok7 activates the receptor tyrosine kinase MuSK via dimerization." Bergamin E., Hallock P.T., Burden S.J., Hubbard S.R. Mol. Cell 39:100-109(2010) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH MUSK, FUNCTION, CHARACTERIZATION OF VARIANTS LGM VAL-33 AND GLN-158, MUTAGENESIS OF SER-30; VAL-32 AND ARG-174. |
| [6] | "Dok-7 mutations underlie a neuromuscular junction synaptopathy." Beeson D., Higuchi O., Palace J., Cossins J., Spearman H., Maxwell S., Newsom-Davis J., Burke G., Fawcett P., Motomura M., Muller J.S., Lochmuller H., Slater C., Vincent A., Yamanashi Y. Science 313:1975-1978(2006) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT LGM ALA-180. |
| [7] | "Phenotypical spectrum of DOK7 mutations in congenital myasthenic syndromes." Muller J.S., Herczegfalvi A., Vilchez J.J., Colomer J., Bachinski L.L., Mihaylova V., Santos M., Schara U., Deschauer M., Shevell M., Poulin C., Dias A., Soudo A., Hietala M., Aarimaa T., Krahe R., Karcagi V., Huebner A. Lochmuller H.Brain 130:1497-1506(2007) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LGM VAL-33; GLN-132 AND HIS-469. |
| [8] | "Phenotype genotype analysis in 15 patients presenting a congenital myasthenic syndrome due to mutations in DOK7." Ben Ammar A., Petit F., Alexandri N., Gaudon K., Bauche S., Rouche A., Gras D., Fournier E., Koenig J., Stojkovic T., Lacour A., Petiot P., Zagnoli F., Viollet L., Pellegrini N., Orlikowski D., Lazaro L., Ferrer X. Eymard B.J. Neurol. 257:754-766(2010) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LGM MET-116; LEU-146; ARG-157; ARG-171; ARG-172 AND VAL-180, VARIANT LEU-45. |
| [9] | "The spectrum of mutations that underlie the neuromuscular junction synaptopathy in DOK7 congenital myasthenic syndrome." Cossins J., Liu W.W., Belaya K., Maxwell S., Oldridge M., Lester T., Robb S., Beeson D. Hum. Mol. Genet. 21:3765-3775(2012) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS LGM LYS-3; THR-31; MET-77; CYS-109; LEU-139; GLN-158; ARG-161; ARG-166; ASP-171 AND ALA-180, VARIANTS LEU-45; VAL-99; ASN-197; HIS-261; GLN-272; ARG-296; CYS-323; LYS-382; GLN-402; SER-415; THR-440; TRP-451; ASP-461 AND THR-503, CHARACTERIZATION OF VARIANTS LGM LYS-3; THR-31; MET-77; CYS-109; LEU-139; GLN-158; ARG-161; ARG-166; ASP-171 AND ALA-180, CHARACTERIZATION OF VARIANT LEU-45. |
| + | Additional computationally mapped references. |
Web resources
| The Leiden Muscular Dystrophy pages, Docking protein 7 (DOK7) Leiden Open Variation Database (LOVD) |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AB220918 mRNA. Translation: BAE96739.1. AK075037 mRNA. Translation: BAC11367.1. Different initiation. AK091037 mRNA. Translation: BAC03572.1. AL590235 Genomic DNA. Translation: CAM21455.1. BC043568 mRNA. Translation: AAH43568.1. BC062369 mRNA. Translation: AAH62369.1. BC131544 mRNA. Translation: AAI31545.1. BC141852 mRNA. Translation: AAI41853.1. |
| IPI | IPI00168218. IPI00783555. IPI00783590. |
| RefSeq | NP_001158145.1. NM_001164673.1. NP_001243825.1. NM_001256896.1. NP_775931.3. NM_173660.4. |
| UniGene | Hs.122110. Hs.701584. |
3D structure databases | |
| ProteinModelPortal | Q18PE1. |
| ModBase | Search... |
Protein-protein interaction databases | |
| IntAct | Q18PE1. 1 interaction. |
| STRING | 9606.ENSP00000344432. |
PTM databases | |
| PhosphoSite | Q18PE1. |
Polymorphism databases | |
| DMDM | 115311705. |
Proteomic databases | |
| PaxDb | Q18PE1. |
| PRIDE | Q18PE1. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000340083; ENSP00000344432; ENSG00000175920. ENST00000389653; ENSP00000374304; ENSG00000175920. |
| GeneID | 285489. |
| KEGG | hsa:285489. |
| UCSC | uc003ghd.3. human. uc003ghg.1. human. |
Organism-specific databases | |
| CTD | 285489. |
| GeneCards | GC04P003465. |
| HGNC | HGNC:26594. DOK7. |
| MIM | 254300. phenotype. 610285. gene. |
| neXtProt | NX_Q18PE1. |
| Orphanet | 994. Fetal akinesia deformation sequence. 98913. Postsynaptic congenital myasthenic syndromes. |
| PharmGKB | PA162384035. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | NOG69734. |
| HOGENOM | HOG000230953. |
| HOVERGEN | HBG080009. |
| OMA | DCLLMLA. |
Gene expression databases | |
| ArrayExpress | Q18PE1. |
| Bgee | Q18PE1. |
| CleanEx | HS_DOK7. |
| Genevestigator | Q18PE1. |
Family and domain databases | |
| Gene3D | 2.30.29.30. 2 hits. |
| InterPro | IPR002404. Insln_rcpt_S1. IPR011993. PH_like_dom. IPR001849. Pleckstrin_homology. [Graphical view] |
| Pfam | PF02174. IRS. 1 hit. [Graphical view] |
| SMART | SM00233. PH. 1 hit. [Graphical view] |
| PROSITE | PS51064. IRS_PTB. 1 hit. PS50003. PH_DOMAIN. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| GenomeRNAi | 285489. |
| NextBio | 95544. |
| SOURCE | Search... |
Entry information
| Entry name | DOK7_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q18PE1 Secondary accession number(s): A2A499 Q8NBC1 | ||||||||
| Entry history |
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| 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
| 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
