Recombinant Human Muscle, skeletal receptor tyrosine-protein kinase (MUSK), partial (Active)

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中文名稱：

人MUSK重組蛋白
貨號：

CSB-CF015241HU
規格：

￥5028
圖片：
(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

Activity
Measured by ADP-Glo Kinase detection kit. The EC₅₀ of MUSK is 2.65-3.58 μg/ml.
其他：

產品詳情
產品評價
相關產品
靶點詳情

產品詳情

純度：

Greater than 90% as determined by SDS-PAGE.
生物活性：

Measured by ADP-Glo Kinase detection kit. The EC50 of MUSK is 2.65-3.58 μg/ml.
基因名：

MUSK
Uniprot No.：

O15146
別名：

MUSK; Muscle, skeletal receptor tyrosine-protein kinase; Muscle-specific tyrosine-protein kinase receptor; MuSK; Muscle-specific kinase receptor
種屬：

Homo sapiens (Human)
蛋白長度：

Extracellular Domain
來源：

in vitro E.coli expression system
分子量：

56.5kDa
表達區域：

24-495aa
氨基酸序列

LPKAPVITTPLETVDALVEEVATFMCAVESYPQPEISWTRNKILIKLFDTRYSIRENGQLLTILSVEDSDDGIYCCTANNGVGGAVESCGALQVKMKPKITRPPINVKIIEGLKAVLPCTTMGNPKPSVSWIKGDSPLRENSRIAVLESGSLRIHNVQKEDAGQYRCVAKNSLGTAYSKVVKLEVEEESEPEQDTKVFARILRAPESHNVTFGSFVTLHCTATGIPVPTITWIENGNAVSSGSIQESVKDRVIDSRLQLFITKPGLYTCIATNKHGEKFSTAKAAATISIAEWREYCLAVKELFCAKEWLVMEEKTHRGLYRSEMHLLSVPECSKLPSMHWDPTACARLPHLAFPPMTSSKPSVDIPNLPSSSSSSFSVSPTYSMTVIISIMSSFAIFVLLTITTLYCCRRRKQWKNKKRESAAVTLTTLPSELLLDRLHPNPMYQRMPLLLNPKLLSLEYPRNNIEYVRDI
蛋白標簽：

N-terminal 6xHis-tagged
產品提供形式：

Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
緩沖液：

Tris-based buffer，50% glycerol
儲存條件：

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
保質期：

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
貨期：

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
注意事項：

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
產品描述：

Recombinant Human Muscle, skeletal receptor tyrosine-protein kinase(MUSK) is a partial-length active protein expressed in vitro E.coli expression system. This protein contains the extracellular domain (24-495aa) of human MUSK and carries an N-terminal 6xHis-tag. Its purity is greater than 90% as determined by SDS-PAGE. And its bio-activity was measured and confirmed through the ADP-Glo Kinase detection kit. The EC50 of MUSK is 2.65-3.58 μg/ml. The recombinant MUSK protein can be used for specific antibody production. Besides, it may find uses in the studies of MUSK-related signal transduction.

MUSK is a receptor tyrosine kinase (RTK) that exerts a critical role in the formation and maintenance of neuromuscular synapses through the agrin/LRP4-dependent MuSK signaling pathway. Mutations in genes including agrin, MuSK, Dok7, rapsyn, or AChR, fail to form proper neuromuscular junctions (NMJs) or maintain them, ultimately cause congenital myasthenia, resulting in muscle weakness and fatigue. Autoantibodies against the AChR, MUSK, or Lrp4 are responsible for Myasthenia gravis (MG).
Datasheet & COA：

Please contact us to get it.

產品評價

靶點詳情

功能：

Receptor tyrosine kinase which plays a central role in the formation and the maintenance of the neuromuscular junction (NMJ), the synapse between the motor neuron and the skeletal muscle. Recruitment of AGRIN by LRP4 to the MUSK signaling complex induces phosphorylation and activation of MUSK, the kinase of the complex. The activation of MUSK in myotubes regulates the formation of NMJs through the regulation of different processes including the specific expression of genes in subsynaptic nuclei, the reorganization of the actin cytoskeleton and the clustering of the acetylcholine receptors (AChR) in the postsynaptic membrane. May regulate AChR phosphorylation and clustering through activation of ABL1 and Src family kinases which in turn regulate MUSK. DVL1 and PAK1 that form a ternary complex with MUSK are also important for MUSK-dependent regulation of AChR clustering. May positively regulate Rho family GTPases through FNTA. Mediates the phosphorylation of FNTA which promotes prenylation, recruitment to membranes and activation of RAC1 a regulator of the actin cytoskeleton and of gene expression. Other effectors of the MUSK signaling include DNAJA3 which functions downstream of MUSK. May also play a role within the central nervous system by mediating cholinergic responses, synaptic plasticity and memory formation.
基因功能參考文獻：
1. Gene expression profiling showed that MuSK was required for the BMP4-induced expression of a subset of genes in myoblasts, including regulator of G protein signaling 4 (Rgs4). PMID: 27601729
2. Classical electromyography revealed the presence of myopathic changes more frequently in MuSK myasthenia gravis compared to acetylcholine receptor myasthenia gravis PMID: 26778359
3. A Dutch founder mutation in MUSK causing fetal akinesia deformation sequence has been found in 14 fetuses. PMID: 25537362
4. To our knowledge, this is the first report showing that a mutation in MuSK is associated with Fetal akinesia deformation sequence syndrome PMID: 25612909
5. Immunosuppression attenuates the Th1 response in AChR-myasthenia gravis (MG) and MuSK-MG, but otherwise modulates immune responses in AChR-MG and MuSK-MG patients differentially. PMID: 25893403
6. HnRNP C, YB-1 and hnRNP L coordinately enhance skipping of human MUSK exon 10 to generate a Wnt-insensitive MuSK isoform. PMID: 25354590
7. MuSK myasthenia gravis IgG4 disrupts the interaction of LRP4 with MuSK but both IgG4 and IgG1-3 can disperse preformed agrin-independent AChR clusters PMID: 24244707
8. [review] Recent discovery of two novel target proteins (MuSK and LRP4) has reduced the percentage of patients without known autoantibodies, although there are still some seronegative myasthenia gravis patients. PMID: 24530233
9. Identification of a novel missense mutation c.114T > A; p.Asp38Glu heteroallelic to a genomic deletion encompassing exons 2-3 of MUSK that explain a limb-girdle congenital myasthenic syndrome in two affected brothers of a Turkish family. PMID: 24183479
10. HEp-2 M4 cells revealed a high specificity for the detection of MuSK autoantibodies from 25 patient sera. PMID: 24416182
11. This study provides a replication of the highly significant associations of both HLA-DRB1( *)16,-DRB1( *)14 and -DQB1( *)05 with MuSK-MG. PMID: 23993985
12. pathogenic IgG4 antibodies to MuSK bind to a structural epitope in the first Ig-like domain of MuSK, prevent binding between MuSK and Lrp4, and inhibit Agrin-stimulated MuSK phosphorylation. PMID: 24297891
13. We proved that the missense mutations in ColQ-CTD cause endplate AChE deficiency by compromising ColQ-MuSK interaction at the NMJ. PMID: 23553736
14. MUSK is associated with a small but variable subgroup of distinct phenotypes in Thai patients with myasthenia gravis who have MUSK autoantibodies. PMID: 23352351
15. MUSK antibodies may induce phenotypically disruptive actions at the neuromuscular junction by binding acetylcholinesterase (AChE) via its collagen tail, producing a reduction in synaptic AChE activity. PMID: 23720161
16. MuSK is activated in a complex spatio-temporal manner to cluster acetylcholine receptors on the postsynaptic (muscle) side of the synapse and to induce differentiation of the nerve terminal on the presynaptic side. (Review) PMID: 23467009
17. We report a novel mutation in MUSK leading to a Congenital myasthenic syndromes PMID: 23326516
18. MuSK kinase activity is necessary for substrate-dependent acetylcholine receptor cluster formation PMID: 22210232
19. Two family cases are reported that transmit MuSK antibody myasthenia gravis to the offspring by different maternal mechanisms. PMID: 21386774
20. The ability of immobilized MuSK extracellular domain to remove practically all anti-MuSK antibodies from patients' sera should prove invaluable for development of an antigen-specific therapeutic approach for MuSK myasthenia gravis. PMID: 21993075
21. Lrp4 is a cis-acting ligand for MuSK PMID: 21969364
22. The importance of MuSK as a synapse organiser is highlighted by cases of autoimmune myasthenia gravis in which MuSK autoantibodies can deplete MuSK from the postsynaptic membrane, leading to complete disassembly of the adult neuromuscular junction. PMID: 20974278
23. these findings demonstrate that missense mutations in MUSK can result in a severe form of congenital myasthenic syndrome and indicate that the inability of MuSK mutants to interact with Dok-7. PMID: 20371544
24. Anti-MuSK protein positive patients have more predominantly bulbar involvement and had more severe myasthenia gravis. PMID: 19327804
25. analysis of regulation of MuSK expression by a novel signaling pathway PMID: 12885777
26. Missense mutation does not affect MuSK catalytic kinase activity but diminishes expression and stability. PMID: 15496425
27. Thus, an agrin/MuSK complex may form part of a motor neuron stop signal involved in "reverse signaling" to the motor neuron. PMID: 15691710
28. A low-molecular weight isoform of muscle-specific receptor tyrosine kinase in human sperm localized in the flagellar mid-piece region. PMID: 16487930
29. Dok-7 is essential for neuromuscular synaptogenesis through its interaction with MuSK PMID: 16794080
30. Altogether, these results indicate that anti-MuSK Abs could be pathogenic by contributing to the muscle atrophy in MuSK+ MG patients. PMID: 16857268
31. muscle-specific receptor tyrosine kinase activation and binding to dystroglycan are regulated by alternative mRNA splicing of agrin PMID: 17012237
32. Testing of human myotubes for the presence and activation of MuSK by exposing them to laminin. PMID: 17192614
33. We describe a case of epileptic seizures secondary to myasthenia gravis caused by autoantibodies to the MUSK receptor. These autoantibodies affected the brain as well. PMID: 17661994
34. the COOH-terminal NES and Src homology 2 target motifs play key roles in Dok-7/MuSK signaling for neuromuscular synaptogenesis. PMID: 18165682
35. We describe a transient neonatal myasthenic syndrome with anti-musk antibodies. PMID: 18378885
36. IgG from anti-MuSK-positive patients can cause myasthenia gravis when injected into mice. PMID: 18384168
37. single-fiber electromyography of distal limb muscles tends to have a lower yield of abnormality in MuSK-antibody-positive patients than either acetylcholine receptor-antibody-positive or seronegative myasthenia gravis PMID: 18567855
38. Thymectomy is mostly considered scarcely effective; however, at present, no firm conclusions can be drawn on its role in the treatment of this form of myasthenia gravis PMID: 18567856
39. Anti-MuSK antibodies influence the activity of MuSK molecules without reducing their number, thereby diminishing the size of the endplate and affecting the functioning of acetylcholine receptors. PMID: 19745065
40. This study report a family known so far with a congenital myasthenic syndromes due to a mutation in the MUSK gene. PMID: 19949040
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相關疾病：

Myasthenic syndrome, congenital, 9, associated with acetylcholine receptor deficiency (CMS9); Fetal akinesia deformation sequence (FADS)
亞細胞定位：

Cell junction, synapse, postsynaptic cell membrane; Single-pass type I membrane protein.
蛋白家族：

Protein kinase superfamily, Tyr protein kinase family
數據庫鏈接：

HGNC: 7525

OMIM: 208150

KEGG: hsa:4593

STRING: 9606.ENSP00000363571

UniGene: Hs.521653