Recombinant Human MAG Protein (C-6His)

Name: Recombinant Human MAG Protein (C-6His)
Brand: Beta LifeScience
SKU: BL-0636NP
Availability: InStock

BL-0636NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

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Product Overview

Description	Recombinant Human Myelin Associated Glycoprotein is produced by our Mammalian expression system and the target gene encoding Gly20-Pro516 is expressed with a 6His tag at the C-terminus.
Accession	P20916
Synonym	Myelin-Associated Glycoprotein; Siglec-4a; MAG; GMA
Gene Background	Human Myelin-Associated Glycoprotein,also known as MAG, Siglec-4,is a cell membrane glycoprotein that is a member of the SIGLEC family of proteins.MAG contains 4 Ig-like C2-type domains and 1 Ig-like V-type domain.MAG functions as an adhesion molecule during neural development. MAG is believed to be involved in myelination during nerve regeneration. it is a adhesion molecule in postnatal neural development that mediates sialic-acid dependent cell-cell interactions between neuronal and myelinating cells and Preferentially binds to alpha-2,3-linked sialic acid. Soluble MAG, which is released from myelin in large quantities, has been identified in normal human tissues and in tissues from patients with neurological disorders. It is believed that this soluble MAG might contribute to the lack of CNS neuron regeneration after injury.
Molecular Mass	55.7 KDa
Apmol Mass	75-110 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.2.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening. Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	Adhesion molecule that mediates interactions between myelinating cells and neurons by binding to neuronal sialic acid-containing gangliosides and to the glycoproteins RTN4R and RTN4RL2. Not required for initial myelination, but seems to play a role in the maintenance of normal axon myelination. Protects motoneurons against apoptosis, also after injury; protection against apoptosis is probably mediated via interaction with neuronal RTN4R and RTN4RL2. Required to prevent degeneration of myelinated axons in adults; this probably depends on binding to gangliosides on the axon cell membrane. Negative regulator of neurite outgrowth; in dorsal root ganglion neurons the inhibition is mediated primarily via binding to neuronal RTN4R or RTN4RL2 and to a lesser degree via binding to neuronal gangliosides. In cerebellar granule cells the inhibition is mediated primarily via binding to neuronal gangliosides. In sensory neurons, inhibition of neurite extension depends only partially on RTN4R, RTN4RL2 and gangliosides. Inhibits axon longitudinal growth. Inhibits axon outgrowth by binding to RTN4R. Preferentially binds to alpha-2,3-linked sialic acid. Binds ganglioside Gt1b.
Subcellular Location	Cell membrane; Single-pass type I membrane protein. Membrane raft.
Protein Families	Immunoglobulin superfamily, SIGLEC (sialic acid binding Ig-like lectin) family
Database References	HGNC: 6783 OMIM: 159460 KEGG: hsa:4099 STRING: 9606.ENSP00000376048 UniGene: Hs.643440
Associated Diseases	Spastic paraplegia 75, autosomal recessive (SPG75)
Tissue Specificity	Both isoform 1 and isoform 2 are detected in myelinated structures in the central and peripheral nervous system, in periaxonal myelin and at Schmidt-Lanterman incisures. Detected in optic nerve, in oligodendroglia and in periaxonal myelin sheaths. Detecte

Gene Functions References

we observed two-way correlations between the MOG and MAG levels and the fractional anisotropy and mean diffusivity values in the white matter of the left middle frontal lobe, right inferior parietal lobe, and right supplementary motor area in major depressive disorder patients PMID: 29477585
polyneuropathy associated with anti-MAG antibodies is less homogeneous. PMID: 26065001
This study identify involvement of myelin-associated glycoprotein in this family with a disorder affecting the central and peripheral nervous system, and suggest that loss of the protein function is responsible for the unique clinical phenotype PMID: 26179919
Results show that MAG is important for axon-glia contact in a model for Charcot-Marie-Tooth disease type 1A, and suggest that its increased expression in patients has a compensatory role in the disease pathology PMID: 22940629
Increased serum levels of MAG (and MBP) were found in autistic patients with allergic manifestations compared to those without these manifestations. PMID: 23726766
Primary mitochondrial respiratory chain defects affecting the white matter, and unrelated to inflammation, are associated with MAG loss and central nervous system demyelination. PMID: 22491194
Distal acquired demyelinating symmetric neuropathy without anti-MAG antibodies is more likely to be considered a variant of chronic inflammatory demyelinating polyradiculoneuropathy, including a hematological or immunological condition. PMID: 21199182
polysialylated NCAM persistence, up-regulated polysialyltransferase-1 mRNA and previously uncovered defective myelin-associated glycoprotein may be early pathogenetic events in adult-onset autosomal-dominant leukodystrophy PMID: 19725832
Myelin destruction with preferential loss of MAG is found in autopsy brains with acute white matter ischemia as well as in HSV- and CMV-encephalitis. PMID: 12528815
Possible association of MAG and schizophrenia in a Chinese Han cohort of family trios PMID: 15820319
Our findings of a significant associations between schizophrenia and the MAG gene suggest that this gene may be involved in susceptibility to schizophrenia in the Chinese Han population. PMID: 16039057
Expression of MAG, CNP and OLIG2 did not differ between patients with schizophrenia and controls in the grey or white matter PMID: 17964117
These results support the hypothesis that the adhesive interactions between MUC1 and MAG are of biological significance in pancreatic cancer perineural invasion. PMID: 17974963
Twenty of 46 patients with IgM amyloidosis (7 with and 13 without polyneuropathy) had elevation of anti-MAG or SGPG by enzyme-linked immunosorbent assay PMID: 18236455
This finding provides support for potential association of the CNP gene but not the MAG gene in schizophrenia in a Caucasian population. PMID: 18496213
In our patient, propriospinal myoclonus was associated with anti-MAG polyneuropathy, but the causal relationship remains unclear. PMID: 18816614
RNF10 is a trans-acting protein regulating MAG expression and is required for myelin formation. PMID: 18941509
Taken together, these findings suggest that in anti-MAG neuropathy patients, IgM deposits are entrapped within cutaneous perineurium-ensheathed nerve bundles where they accumulate in the endoneurial space. PMID: 19151627
ELISA is more sensitive than Western blot to diagnose anti-myelin-associated glycoprotein related polyneuropathy, although a positive serology may be found in other forms of polyneuropathy as well. PMID: 19720975

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

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