Reviewed,
UniProtKB/Swiss-Prot O15146 (MUSK_HUMAN)
Last modified
October 13, 2009.
Version 84.
History...
Clusters with 100%,
90%,
50% identity |
Documents (6) |
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Names and origin
| Protein names | Recommended name: Muscle, skeletal receptor tyrosine protein kinase EC=2.7.10.1 Alternative name(s): Muscle-specific tyrosine protein kinase receptor Short name=Muscle-specific kinase receptor Short name=MuSK | ||
| Gene names |
| ||
| Organism | Homo sapiens (Human) [Complete 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 | 869 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 | Receptor tyrosine kinase that is a key mediator of agrin's action and is involved in neuromuscular junction (NMJ) organization By similarity. |
| Catalytic activity | ATP + a [protein]-L-tyrosine = ADP + a [protein]-L-tyrosine phosphate. |
| Subunit structure | Interacts with DOK7, which probably regulates its activity By similarity. |
| Subcellular location | Membrane; Single-pass type I membrane protein Potential. |
| Involvement in disease | Defects in MUSK is a cause of autosomal recessive congenital myasthenic syndrome (CMS) [MIM:608931]. Congenital myasthenic syndromes are inherited disorders of neuromuscular transmission that stem from mutations in presynaptic, synaptic, or postsynaptic proteins. MUSK mutations lead to decreased agrin-dependent AChR aggregation, a critical step in the formation of the neuromuscular junction. |
| Sequence similarities | Belongs to the protein kinase superfamily. Tyr protein kinase family. Contains 1 FZ (frizzled) domain. Contains 3 Ig-like C2-type (immunoglobulin-like) domains. Contains 1 protein kinase domain. |
| Sequence caution | The sequence CAH69977.1 differs from that shown. Reason: Erroneous gene model prediction. The sequence CAH69978.1 differs from that shown. Reason: Erroneous gene model prediction. The sequence CAI17349.1 differs from that shown. Reason: Erroneous gene model prediction. The sequence CAI17350.1 differs from that shown. Reason: Erroneous gene model prediction. |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Membrane |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Disease | Disease mutation |
| Domain | Immunoglobulin domain Repeat Signal Transmembrane |
| Ligand | ATP-binding Nucleotide-binding |
| Molecular function | Kinase Receptor Transferase Tyrosine-protein kinase |
| PTM | Disulfide bond Glycoprotein Phosphoprotein |
| Technical term | Complete proteome |
| Gene Ontology (GO) | |
| Biological process | muscle organ development Ref.1 Traceable author statement. Source: ProtInc protein amino acid phosphorylationInferred from electronic annotation. Source: InterPro transmembrane receptor protein tyrosine kinase signaling pathway Ref.1Traceable author statement. Source: ProtInc |
| Cellular component | integral to plasma membrane Ref.1 Traceable author statement. Source: ProtInc |
| Molecular function | ATP binding Inferred from electronic annotation. Source: UniProtKB-KW transmembrane receptor protein tyrosine kinase activity Ref.1Traceable author statement. Source: ProtInc |
| Complete GO annotation... | |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: O15146-1) 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: O15146-2) The sequence of this isoform differs from the canonical sequence as follows: 209-209: E → EEESEPEQDTK 307-394: Missing. 454-462: DYNKENLKT → A | ||||||
| Isoform 3 (identifier: O15146-3) The sequence of this isoform differs from the canonical sequence as follows: 307-394: Missing. 454-462: DYNKENLKT → A |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 23 | 23 | Potential | ||||||||
| Chain | 24 – 869 | 846 | Muscle, skeletal receptor tyrosine protein kinase | PRO_0000024446 | |||||||
Regions | |||||||||||
| Topological domain | 24 – 495 | 472 | Extracellular Potential | ||||||||
| Transmembrane | 496 – 516 | 21 | Potential | ||||||||
| Topological domain | 517 – 869 | 353 | Cytoplasmic Potential | ||||||||
| Domain | 28 – 116 | 89 | Ig-like 1 | ||||||||
| Domain | 121 – 205 | 85 | Ig-like 2 | ||||||||
| Domain | 212 – 302 | 91 | Ig-like 3 | ||||||||
| Domain | 312 – 450 | 139 | FZ | ||||||||
| Domain | 575 – 856 | 282 | Protein kinase | ||||||||
| Nucleotide binding | 581 – 589 | 9 | ATP By similarity | ||||||||
Sites | |||||||||||
| Active site | 725 | 1 | Proton acceptor By similarity | ||||||||
| Binding site | 609 | 1 | ATP By similarity | ||||||||
Amino acid modifications | |||||||||||
| Modified residue | 755 | 1 | Phosphotyrosine; by autocatalysis By similarity | ||||||||
| Glycosylation | 222 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 338 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Disulfide bond | 49 ↔ 99 | By similarity | |||||||||
| Disulfide bond | 142 ↔ 190 | By similarity | |||||||||
| Disulfide bond | 233 ↔ 282 | By similarity | |||||||||
| Disulfide bond | 317 ↔ 382 | By similarity | |||||||||
| Disulfide bond | 325 ↔ 375 | By similarity | |||||||||
| Disulfide bond | 366 ↔ 406 | By similarity | |||||||||
| Disulfide bond | 394 ↔ 447 | By similarity | |||||||||
| Disulfide bond | 398 ↔ 434 | By similarity | |||||||||
Natural variations | |||||||||||
| Alternative sequence | 209 | 1 | E → EEESEPEQDTK in isoform 2. | VSP_035958 | |||||||
| Alternative sequence | 307 – 394 | 88 | Missing in isoform 2 and isoform 3. | VSP_035959 | |||||||
| Alternative sequence | 454 – 462 | 9 | DYNKENLKT → A in isoform 2 and isoform 3. | VSP_035960 | |||||||
| Natural variant | 27 | 1 | A → G | VAR_041748 | |||||||
| Natural variant | 100 | 1 | T → M | VAR_041749 | |||||||
| Natural variant | 107 | 1 | G → E | VAR_041750 | |||||||
| Natural variant | 159 | 1 | S → G: dbSNP rs35176182. Ref.6 | VAR_041751 | |||||||
| Natural variant | 222 | 1 | N → S | VAR_041752 | |||||||
| Natural variant | 413 | 1 | M → I: dbSNP rs2274419. Ref.6 | VAR_021930 | |||||||
| Natural variant | 629 | 1 | L → F | VAR_041753 | |||||||
| Natural variant | 644 | 1 | V → A | VAR_041754 | |||||||
| Natural variant | 664 | 1 | N → S | VAR_041755 | |||||||
| Natural variant | 696 | 1 | P → L | VAR_041756 | |||||||
| Natural variant | 782 | 1 | E → D | VAR_041757 | |||||||
| Natural variant | 790 | 1 | V → M in a case of congenital myasthenic syndrome; does not affect catalytic kinase activity; reduces protein expression and stability. Ref.5 | VAR_023046 | |||||||
| Natural variant | 819 | 1 | N → S in a lung neuroendocrine carcinoma sample; somatic mutation. Ref.6 | VAR_041758 | |||||||
| Natural variant | 829 | 1 | V → L: dbSNP rs578430. Ref.6 | VAR_033837 | |||||||
| Natural variant | 858 | 1 | R → H | VAR_041759 | |||||||
Sequences
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References
Cross-references
Sequence databases | |
|---|---|
| AF006464 mRNA. Translation: AAB63044.1. AL157881, AL513328 Genomic DNA. Translation: CAH69977.1. Sequence problems. AL513328, AL157881 Genomic DNA. Translation: CAI17349.1. Sequence problems. AL157881, AL513328 Genomic DNA. Translation: CAH69978.1. Sequence problems. AL513328, AL157881 Genomic DNA. Translation: CAI17350.1. Sequence problems. BC109098 mRNA. Translation: AAI09099.1. BC109099 mRNA. Translation: AAI09100.1. | |
| IPI | IPI00289243. IPI00655599. IPI00915471. |
| RefSeq | NP_005583.1. |
| UniGene | Hs.521653 |
3D structure databases | |
| HSSP | HSSP built from PDB template 1LUF based on UniProtKB Q62838. |
| SMR | O15146. Positions 25-211. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | O15146. |
PTM databases | |
| PhosphoSite | O15146. |
Proteomic databases | |
| PRIDE | O15146. |
Genome annotation databases | |
| Ensembl | ENST00000189978; ENSP00000189978; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374438; ENSP00000363561; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374439; ENSP00000363562; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374440; ENSP00000363563; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374441; ENSP00000363564; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374447; ENSP00000363570; ENSG00000030304; Homo sapiens. [Genome view] ENST00000374448; ENSP00000363571; ENSG00000030304; Homo sapiens. [Genome view] ENST00000416899; ENSP00000393608; ENSG00000030304; Homo sapiens. [Genome view] |
| GeneID | 4593. |
| KEGG | hsa:4593. |
| UCSC | uc004bey.2. human. |
Organism-specific databases | |
| CTD | 4593. |
| GeneCards | GC09P112470. |
| H-InvDB | HIX0034744. |
| HGNC | HGNC:7525. MUSK. |
| MIM | 600878. gene. 601296. gene. 608931. phenotype. |
| Orphanet | 590. Congenital myasthenic syndromes. 98913. Postsynaptic congenital myasthenic syndromes. |
| PharmGKB | PA31326. |
| GenAtlas | Search... |
Phylogenomic databases | |
| HOVERGEN | O15146. |
Enzyme and pathway databases | |
| BRENDA | 2.7.10.1. 247. |
Gene expression databases | |
| ArrayExpress | O15146. |
| Bgee | O15146. |
| CleanEx | HS_MUSK. |
| Genevestigator | O15146. |
| GermOnline | ENSG00000030304. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR020067. Frizzled-like_dom. IPR007110. Ig-like. IPR013783. Ig-like_fold. IPR013098. Ig_I-set. IPR003598. Ig_sub2. IPR000719. Prot_kinase_core. IPR017441. Protein_kinase_ATP_BS. IPR001245. Tyr_pkinase. IPR008266. Tyr_pkinase_AS. [Graphical view] |
| Gene3D | G3DSA:2.60.40.10. Ig-like_fold. 3 hits. |
| Pfam | PF01392. Fz. 1 hit. PF07679. I-set. 3 hits. PF07714. Pkinase_Tyr. 1 hit. [Graphical view] |
| PRINTS | PR00109. TYRKINASE. |
| ProDom | PD000001. Prot_kinase. 1 hit. [Graphical view] [Entries sharing at least one domain] |
| SMART | SM00408. IGc2. 3 hits. SM00219. TyrKc. 1 hit. [Graphical view] |
| PROSITE | PS50038. FZ. 1 hit. PS50835. IG_LIKE. 3 hits. PS00107. PROTEIN_KINASE_ATP. 1 hit. PS50011. PROTEIN_KINASE_DOM. 1 hit. PS00109. PROTEIN_KINASE_TYR. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other Resources | |
| NextBio | 17656. |
| SOURCE | Search... |
Entry information
| Entry name | MUSK_HUMAN | ||||||||
| Accession | Primary (citable) accession number: O15146 Secondary accession number(s): Q32MJ8 Q5VZW8 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | HPI (Human Proteome Initiative) | ||||||||
| 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 9 Human chromosome 9: 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 |
| Human and mouse protein kinases Human and mouse protein kinases: classification and index |
| SIMILARITY comments Index of protein domains and families |

Clusters with


