Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Name: Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF
Brand: R&D Systems
SKU: AVI9810
Price: 602 USD

R&D Systems, Inc. a Bio-Techne Brand

Catalog # AVI9810

Product Datasheet / COA / SDS

Biotinylated

Catalog #

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Qty

Setting the standard in quality research reagents

Key Product Details

Source:	CHO
Structure / Form:	Disulfide-linked homodimer Biotinylated via Avi-tag
Applications:	Bioactivity

View Full Technical Details for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Product Specifications for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Source

Chinese Hamster Ovary cell line, CHO-derived human MuSK protein

Human MuSK (Leu24-Thr495) Accession # O15146.1	IEGRMD	Human IgG₁ (Pro100-Lys330)	Avi-tag
N-terminus			C-terminus

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal sequence Analysis

Leu24

Predicted Molecular Mass

80 kDa

SDS-PAGE

87-102 kDa, under reducing conditions.

Activity

Measured by its binding ability in a functional ELISA. When Biotinylated Recombinant Human MuSK Fc Chimera Avi-tag (Catalog # AVI9810) is immobilized onto a Streptavidin coated plate (Catalog # CP004) at 2 µg/mL (100 µL/well), in the presence of Recombinant Human Agrin (Catalog # 6624-AG), it binds to Recombinant Human LRP-4 (Catalog # 5948-LR) with an ED₅₀ of 0.600-4.80 ng/mL.

Scientific Data Examples for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

	Biotinylated Recombinant Human MuSK Fc Chimera Avi-tag Protein Binding Activity. When Biotinylated Recombinant Human MuSK Fc Chimera Avi-tag Protein (Catalog # AVI9810) is immobilized onto a Streptavidin coated plate (CP004) at 2 µg/mL (100 µL/well), in the presence of Recombinant Human Agrin (6624-AG), it binds to Recombinant Human LRP-4 (5948-LR) with an ED₅₀ of 0.600-4.80 ng/mL.
	Biotinylated Recombinant Human MuSK Fc Chimera Avi-tag Protein SDS-PAGE. 2 μg/lane of Biotinylated Recombinant Human MuSK Fc Chimera Avi-tag Protein (Catalog # AVI9810) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 87-102 kDa and 170-200 kDa, respectively.

Formulation, Preparation and Storage

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

AVI9810

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute at 500 μg/mL in PBS.
Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 °C as supplied. 1 month, 2 to 8 °C under sterile conditions after reconstitution. 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: MuSK

MuSK (muscle-specific kinase) is a 100 kDa type I transmembrane (TM) protein belonging to the receptor tyrosine kinase family (1). It contains a 472 aa extracellular domain (ECD), a 21 aa transmembrane domain, and a 353 cytoplasmic domain (1). Within the ECD, Human MuSK shares 91% and 92% aa sequence identity with mouse MuSK and rat MuSK, respectively. It is found in the postsynaptic membrane of skeletal muscle motor endplates (2). Human MuSK has multiple isoforms. One contains deletions at residues 307‑394 and 454‑461, while a second is a short soluble form that contains residues 120‑209 plus a unique 24 aa C‑terminal tail (3). MuSK binds the heparin sulfate proteoglycan agrin to promote acetylcholine receptor clustering. It has also been found to bind with low-density lipoprotein receptor-related protein 4 (LRP4) (4), Wnt ligands (5), biglycan (6), and ColQ (7). Recent studies have showed that MuSK does not bind agrin directly, but enhanced the MuSK-LRP4 interaction (7, 8). When Agrin binds to the N-Terminal region of LRP4, this promotes the association of LRP4 and MuSK, which then stimulates MuSK kinase activity (9, 10). Our Avi-tag Biotinylated human MUSK Fc Chimera features biotinylation at a single site contained within the Avi-tag, a unique 15 amino acid peptide. Protein orientation will be uniform when bound to streptavidin-coated surface due to the precise control of biotinylation and the rest of the protein is unchanged so there is no interference in the protein's bioactivity.

Item	Value
References	Valenzuela, D.M. et al. (1995) Neuron. 15:573. Finn, A.J. et al. (2003) Nat. Neurosci. 6:717. Nasrin, F. et al. (2014) Sci. Rep. 4:6841. Kim, N. et al. (2008) Cell 135:334. Banerjee, S. et al. (2011) Development 138:3287. Amenta, A.R. et al. (2012) J Neurosci 32:2324. Otsuka, K. et al (2015) Scientific Reports. 5:13928. Zhang, B. et al. (2008) Neuron 60:285. Zhang, W. et al. (2011) J Biol Chem. 286(47):40624. Burden, S.J. et al. (2017) CSH Perspectives Biol. 5:a009167.
Long Name	Muscle-specific Receptor Tyrosine Kinase
Entrez Gene IDs	4593 (Human); 18198 (Mouse); 81725 (Rat); 102127677 (Cynomolgus Monkey)
Alternate Names	EC 2.7.10, EC 2.7.10.1, MGC126323, MGC126324, MuSK, muscle, skeletal, receptor tyrosine kinase, skeletal receptor tyrosine-protein kinase

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Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

R&D Systems, Inc. a Bio-Techne Brand

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Product Specifications for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Scientific Data Examples for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Formulation, Preparation and Storage

Carrier Free

Reconstitution Calculator

Background: MuSK

Citations for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Product Documents for Recombinant Human MuSK Fc Chimera Avi-tag Protein, CF

Product Datasheets

COA

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