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 also play a role within the central nervous system by mediating cholinergic responses, synaptic plasticity and memory formation (By similarity).

Belongs to the protein kinase superfamily. Tyr protein kinase family.

947 amino acids

MRDLLVVPLGHVLTLAALSLAETLQKAPFISTPLETVDALVEDVPKFVCVVESYPEPEITWTRNSIPIRLFDTRYSIQRNGQLLTILSVEDSDDGVYCCTADNGVGAAAQSCGALQVKMRPKITRPPVNVEIIEGLKAVLPCTTMGNPKPSVSWIKGETVVKENARIAVLDSGNLRIHNVQREDAGQYRCVAKNSLGSAYSKPATVVVEVFARILKAPESQNITFGSMVTLRCTAAGAPVPTVTWLENGKAVSAGSIAESVKDRVVDSRLQVYVTRPGLFTCLATNKHSKTFGAAKAAATISVSEWSKLYKGDAGYCSTYRGEVCSAILSRNALVFFNSSYADPEETQELLVHTAWTELKTVSSFCQPAAESLLCNYIFQECKPSGVGPAPKPICRENCLAVKDLYCFKEWLSMEENSQRGIYKPGLMLLALPECNRLPSLHQDPSACTHIPFFDFKKENITRTCYSGNGQFYQGWANVTASGIPCQKWSDQAPHLHRRTPQVFPELSDAENYCRNPGGENERPWCYTKDPSVTWEYCSVSPCGDASLSLGTRKPNGETQNLPPPPSYSPTYSMNVIILIISSFALIVILGIITLVCCRRRKQWKNKKRESETPTLTTLPSELLLDRLHPNPMYQRMPLLLNPKLLSLEYPRNNIEYVRDIGEGAFGRVFQARAPGLLPYEPFTMVAVKMLKEEASADMQADFQREAALMAEFDNPNIVKLLGVCAVGKPMCLLFEYMAYGDLNEYLRDRSPRNLCSLVQGGLEARACLLNPLALCCTSQLCIAKQVAAGMAYLSERKFVHRDLATRNCLVGENMVVKIADFGLSRNMYSADYYKANENDAIPIRWMPPESIFYNRYTTESDVWAYGVVLWEIFSYGMQPYYGMAHEEVIYYVRDGNILSCPDNCPLELYNLMRLCWSKLPADRPSFASIHRILERMYERAVASPQV

105.6 kDa

(Note: Representative image - actual molecular weight may vary depending on tag type and expression method)

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