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Reviewed, UniProtKB/Swiss-Prot O15146 (MUSK_HUMAN)

Last modified October 13, 2009. Version 84. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (6) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Web resources · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended 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
Name: MUSK
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length869 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence 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.

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 keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Signal peptide1 – 2323 Potential
Chain24 – 869846Muscle, skeletal receptor tyrosine protein kinase
PRO_0000024446

Regions

Topological domain24 – 495472Extracellular Potential
Transmembrane496 – 51621 Potential
Topological domain517 – 869353Cytoplasmic Potential
Domain28 – 11689Ig-like 1
Domain121 – 20585Ig-like 2
Domain212 – 30291Ig-like 3
Domain312 – 450139FZ
Domain575 – 856282Protein kinase
Nucleotide binding581 – 5899ATP By similarity

Sites

Active site7251Proton acceptor By similarity
Binding site6091ATP By similarity

Amino acid modifications

Modified residue7551Phosphotyrosine; by autocatalysis By similarity
Glycosylation2221N-linked (GlcNAc...) Potential
Glycosylation3381N-linked (GlcNAc...) Potential
Disulfide bond49 ↔ 99 By similarity
Disulfide bond142 ↔ 190 By similarity
Disulfide bond233 ↔ 282 By similarity
Disulfide bond317 ↔ 382 By similarity
Disulfide bond325 ↔ 375 By similarity
Disulfide bond366 ↔ 406 By similarity
Disulfide bond394 ↔ 447 By similarity
Disulfide bond398 ↔ 434 By similarity

Natural variations

Alternative sequence2091E → EEESEPEQDTK in isoform 2.
VSP_035958
Alternative sequence307 – 39488Missing in isoform 2 and isoform 3.
VSP_035959
Alternative sequence454 – 4629DYNKENLKT → A in isoform 2 and isoform 3.
VSP_035960
Natural variant271A → G
VAR_041748
Natural variant1001T → M
VAR_041749
Natural variant1071G → E
VAR_041750
Natural variant1591S → G: dbSNP rs35176182. Ref.6
VAR_041751
Natural variant2221N → S
VAR_041752
Natural variant4131M → I: dbSNP rs2274419. Ref.6
VAR_021930
Natural variant6291L → F
VAR_041753
Natural variant6441V → A
VAR_041754
Natural variant6641N → S
VAR_041755
Natural variant6961P → L
VAR_041756
Natural variant7821E → D
VAR_041757
Natural variant7901V → M in a case of congenital myasthenic syndrome; does not affect catalytic kinase activity; reduces protein expression and stability. Ref.5
VAR_023046
Natural variant8191N → S in a lung neuroendocrine carcinoma sample; somatic mutation. Ref.6
VAR_041758
Natural variant8291V → L: dbSNP rs578430. Ref.6
VAR_033837
Natural variant8581R → H
VAR_041759

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 [UniParc].

Last modified January 1, 1998. Version 1.
Checksum: 3DDC20E179FA010C

FASTA86997,056
        10         20         30         40         50         60 
MRELVNIPLV HILTLVAFSG TEKLPKAPVI TTPLETVDAL VEEVATFMCA VESYPQPEIS 

        70         80         90        100        110        120 
WTRNKILIKL FDTRYSIREN GQLLTILSVE DSDDGIYCCT ANNGVGGAVE SCGALQVKMK 

       130        140        150        160        170        180 
PKITRPPINV KIIEGLKAVL PCTTMGNPKP SVSWIKGDSP LRENSRIAVL ESGSLRIHNV 

       190        200        210        220        230        240 
QKEDAGQYRC VAKNSLGTAY SKVVKLEVEV FARILRAPES HNVTFGSFVT LHCTATGIPV 

       250        260        270        280        290        300 
PTITWIENGN AVSSGSIQES VKDRVIDSRL QLFITKPGLY TCIATNKHGE KFSTAKAAAT 

       310        320        330        340        350        360 
ISIAEWSKPQ KDNKGYCAQY RGEVCNAVLA KDALVFLNTS YADPEEAQEL LVHTAWNELK 

       370        380        390        400        410        420 
VVSPVCRPAA EALLCNHIFQ ECSPGVVPTP IPICREYCLA VKELFCAKEW LVMEEKTHRG 

       430        440        450        460        470        480 
LYRSEMHLLS VPECSKLPSM HWDPTACARL PHLDYNKENL KTFPPMTSSK PSVDIPNLPS 

       490        500        510        520        530        540 
SSSSSFSVSP TYSMTVIISI MSSFAIFVLL TITTLYCCRR RKQWKNKKRE SAAVTLTTLP 

       550        560        570        580        590        600 
SELLLDRLHP NPMYQRMPLL LNPKLLSLEY PRNNIEYVRD IGEGAFGRVF QARAPGLLPY 

       610        620        630        640        650        660 
EPFTMVAVKM LKEEASADMQ ADFQREAALM AEFDNPNIVK LLGVCAVGKP MCLLFEYMAY 

       670        680        690        700        710        720 
GDLNEFLRSM SPHTVCSLSH SDLSMRAQVS SPGPPPLSCA EQLCIARQVA AGMAYLSERK 

       730        740        750        760        770        780 
FVHRDLATRN CLVGENMVVK IADFGLSRNI YSADYYKANE NDAIPIRWMP PESIFYNRYT 

       790        800        810        820        830        840 
TESDVWAYGV VLWEIFSYGL QPYYGMAHEE VIYYVRDGNI LSCPENCPVE LYNLMRLCWS 

       850        860 
KLPADRPSFT SIHRILERMC ERAEGTVSV 

« Hide

Isoform 2.

Checksum: 695BD37016C0D980
Show »

FASTA78387,598
Isoform 3.

Checksum: 3BEA481E3C84D000
Show »

FASTA77386,425

References

« Hide 'large scale' references
[1]"Receptor tyrosine kinase specific for the skeletal muscle lineage: expression in embryonic muscle, at the neuromuscular junction, and after injury."
Valenzuela D.M., Stitt T.N., DiStefano P.S., Rojas E., Mattsson K., Compton D.L., Nunez L., Park J.S., Stark J.L., Gies D.R., Thomas S., LeBeau M.M., Fernald A.A., Copeland N.G., Jenkins N.A., Burden S.J., Glass D.J., Yancopoulos G.D.
Neuron 15:573-584(1995) [PubMed: 7546737] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[2]Valenzuela D.M., Rojas E., Yancopoulos G.D.
Submitted (MAY-1997) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[3]"DNA sequence and analysis of human chromosome 9."
Humphray S.J., Oliver K., Hunt A.R., Plumb R.W., Loveland J.E., Howe K.L., Andrews T.D., Searle S., Hunt S.E., Scott C.E., Jones M.C., Ainscough R., Almeida J.P., Ambrose K.D., Ashwell R.I.S., Babbage A.K., Babbage S., Bagguley C.L. expand/collapse author list , Bailey J., Banerjee R., Barker D.J., Barlow K.F., Bates K., Beasley H., Beasley O., Bird C.P., Bray-Allen S., Brown A.J., Brown J.Y., Burford D., Burrill W., Burton J., Carder C., Carter N.P., Chapman J.C., Chen Y., Clarke G., Clark S.Y., Clee C.M., Clegg S., Collier R.E., Corby N., Crosier M., Cummings A.T., Davies J., Dhami P., Dunn M., Dutta I., Dyer L.W., Earthrowl M.E., Faulkner L., Fleming C.J., Frankish A., Frankland J.A., French L., Fricker D.G., Garner P., Garnett J., Ghori J., Gilbert J.G.R., Glison C., Grafham D.V., Gribble S., Griffiths C., Griffiths-Jones S., Grocock R., Guy J., Hall R.E., Hammond S., Harley J.L., Harrison E.S.I., Hart E.A., Heath P.D., Henderson C.D., Hopkins B.L., Howard P.J., Howden P.J., Huckle E., Johnson C., Johnson D., Joy A.A., Kay M., Keenan S., Kershaw J.K., Kimberley A.M., King A., Knights A., Laird G.K., Langford C., Lawlor S., Leongamornlert D.A., Leversha M., Lloyd C., Lloyd D.M., Lovell J., Martin S., Mashreghi-Mohammadi M., Matthews L., McLaren S., McLay K.E., McMurray A., Milne S., Nickerson T., Nisbett J., Nordsiek G., Pearce A.V., Peck A.I., Porter K.M., Pandian R., Pelan S., Phillimore B., Povey S., Ramsey Y., Rand V., Scharfe M., Sehra H.K., Shownkeen R., Sims S.K., Skuce C.D., Smith M., Steward C.A., Swarbreck D., Sycamore N., Tester J., Thorpe A., Tracey A., Tromans A., Thomas D.W., Wall M., Wallis J.M., West A.P., Whitehead S.L., Willey D.L., Williams S.A., Wilming L., Wray P.W., Young L., Ashurst J.L., Coulson A., Blocker H., Durbin R.M., Sulston J.E., Hubbard T., Jackson M.J., Bentley D.R., Beck S., Rogers J., Dunham I.
Nature 429:369-374(2004) [PubMed: 15164053] [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: 15489334] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 2 AND 3).
[5]"MUSK, a new target for mutations causing congenital myasthenic syndrome."
Chevessier F., Faraut B., Ravel-Chapuis A., Richard P., Gaudon K., Bauche S., Prioleau C., Herbst R., Goillot E., Ioos C., Azulay J.-P., Attarian S., Leroy J.-P., Fournier E., Legay C., Schaeffer L., Koenig J., Fardeau M. expand/collapse author list , Eymard B., Pouget J., Hantai D.
Hum. Mol. Genet. 13:3229-3240(2004) [PubMed: 15496425] [Abstract]
Cited for: VARIANT CONGENITAL MYASTHENIC SYNDROME MET-790.
[6]"Patterns of somatic mutation in human cancer genomes."
Greenman C., Stephens P., Smith R., Dalgliesh G.L., Hunter C., Bignell G., Davies H., Teague J., Butler A., Stevens C., Edkins S., O'Meara S., Vastrik I., Schmidt E.E., Avis T., Barthorpe S., Bhamra G., Buck G. expand/collapse author list , Choudhury B., Clements J., Cole J., Dicks E., Forbes S., Gray K., Halliday K., Harrison R., Hills K., Hinton J., Jenkinson A., Jones D., Menzies A., Mironenko T., Perry J., Raine K., Richardson D., Shepherd R., Small A., Tofts C., Varian J., Webb T., West S., Widaa S., Yates A., Cahill D.P., Louis D.N., Goldstraw P., Nicholson A.G., Brasseur F., Looijenga L., Weber B.L., Chiew Y.-E., DeFazio A., Greaves M.F., Green A.R., Campbell P., Birney E., Easton D.F., Chenevix-Trench G., Tan M.-H., Khoo S.K., Teh B.T., Yuen S.T., Leung S.Y., Wooster R., Futreal P.A., Stratton M.R.
Nature 446:153-158(2007) [PubMed: 17344846] [Abstract]
Cited for: VARIANTS [LARGE SCALE ANALYSIS] GLY-27; MET-100; GLU-107; GLY-159; SER-222; ILE-413; PHE-629; ALA-644; SER-664; LEU-696; ASP-782; SER-819; LEU-829 AND HIS-858.
+Additional computationally mapped references.

Web resources

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.
IPIIPI00289243.
IPI00655599.
IPI00915471.
RefSeqNP_005583.1.
UniGeneHs.521653

3D structure databases

HSSPHSSP built from PDB template 1LUF based on UniProtKB Q62838.
SMRO15146. Positions 25-211.
ModBaseSearch...

Protein-protein interaction databases

STRINGO15146.

PTM databases

PhosphoSiteO15146.

Proteomic databases

PRIDEO15146.

Genome annotation databases

EnsemblENST00000189978; 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]
GeneID4593.
KEGGhsa:4593.
UCSCuc004bey.2. human.

Organism-specific databases

CTD4593.
GeneCardsGC09P112470.
H-InvDBHIX0034744.
HGNCHGNC:7525. MUSK.
MIM600878. gene.
601296. gene.
608931. phenotype.
Orphanet590. Congenital myasthenic syndromes.
98913. Postsynaptic congenital myasthenic syndromes.
PharmGKBPA31326.
GenAtlasSearch...

Phylogenomic databases

HOVERGENO15146.

Enzyme and pathway databases

BRENDA2.7.10.1. 247.

Gene expression databases

ArrayExpressO15146.
BgeeO15146.
CleanExHS_MUSK.
GenevestigatorO15146.
GermOnlineENSG00000030304. Homo sapiens.

Family and domain databases

InterProIPR020067. 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]
Gene3DG3DSA:2.60.40.10. Ig-like_fold. 3 hits.
PfamPF01392. Fz. 1 hit.
PF07679. I-set. 3 hits.
PF07714. Pkinase_Tyr. 1 hit.
[Graphical view]
PRINTSPR00109. TYRKINASE.
ProDomPD000001. Prot_kinase. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SMARTSM00408. IGc2. 3 hits.
SM00219. TyrKc. 1 hit.
[Graphical view]
PROSITEPS50038. 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]
ProtoNetSearch...

Other Resources

NextBio17656.
SOURCESearch...

Entry information

Entry nameMUSK_HUMAN
AccessionPrimary (citable) accession number: O15146
Secondary accession number(s): Q32MJ8 expand/collapse secondary AC list , Q32MJ9, Q5VZW7, Q5VZW8
Entry history
Integrated into UniProtKB/Swiss-Prot: July 19, 2004
Last sequence update: January 1, 1998
Last modified: October 13, 2009
This is version 84 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)
DisclaimerAny 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

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Web resources · Cross-references · Entry information · Relevant documents