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biological source
bovine
Quality Level
form
liquid
shelf life
2 yr
manufacturer/tradename
Upstate®
technique(s)
activity assay: suitable
solubility
water: soluble
NCBI accession no.
UniProt accession no.
shipped in
wet ice
storage temp.
−20°C
Gene Information
bovine ... MBP(618684)
General description
Research Area: Cell Signaling
Myelin basic protein (MBP) constitutes approximately 30% of the total protein and accounts for about 10% of the dry weight of myelin. It is primarily associated with the cytosolic side of the oligodendrocyte (OL) membrane, largely through electrostatic interactions with acidic lipids. This protein is distributed throughout compact internodal myelin. MBP consists of multiple post-translationally modified isomers with varying charges, some of which arise from phosphorylation at several sites by different kinases, including mitogen-activated protein kinase (MAPK).
Myelin basic protein (MBP) constitutes approximately 30% of the total protein and accounts for about 10% of the dry weight of myelin. It is primarily associated with the cytosolic side of the oligodendrocyte (OL) membrane, largely through electrostatic interactions with acidic lipids. This protein is distributed throughout compact internodal myelin. MBP consists of multiple post-translationally modified isomers with varying charges, some of which arise from phosphorylation at several sites by different kinases, including mitogen-activated protein kinase (MAPK).
Application
Myelin basic protein purified from bovine brain and de-phosphorylated using Lambda protein phosphatase. No detectable endogenous phosphorylation as determined by immunoblotting 1 microgram of MBP with 1 microgram/ml anti phospho MBP.
Biochem/physiol Actions
Myelin basic protein (MBP) is distributed throughout compact internodal myelin. It binds to negatively charged lipids on the cytosolic surface of oligodendrocyte membranes, likely facilitating the adhesion of these surfaces in the multilayered myelin sheath. MBP is characterized as an intrinsically unstructured protein, providing it with the flexibility to bind to a charged surface along its entire length and adapt its local conformation as needed to optimize binding to various targets. Such proteins often function as multifunctional regulatory proteins.
MBP interacts with polyanions such as actin filaments and microtubules in vitro and binds to other ligands such as Ca2+-calmodulin (CaM). MBP binds to G-actin, inducing its polymerization, and it bundles actin filaments. It also polymerizes actin, bundles F-actin filaments, and binds actin filaments to lipid bilayers through electrostatic interactions. Phosphorylation and dephosphorylation of MBP occur in the myelin sheath in response to electrical activity in the brain.
MBP interacts with polyanions such as actin filaments and microtubules in vitro and binds to other ligands such as Ca2+-calmodulin (CaM). MBP binds to G-actin, inducing its polymerization, and it bundles actin filaments. It also polymerizes actin, bundles F-actin filaments, and binds actin filaments to lipid bilayers through electrostatic interactions. Phosphorylation and dephosphorylation of MBP occur in the myelin sheath in response to electrical activity in the brain.
Quality
routinely evaluated as a substrate in a kinase assay using MAP Kinase 2/Erk2 (Catalog # 14-173)
Physical form
10mM MOPS, pH 7.0, 128mM MnCl2, 641mM EDTA, 1.134μg inactive lambda phosphatase and 0.05% sodium azide
Storage and Stability
2 years at -20°C
Other Notes
This product is derived from bovine source. Export of this product to certain countries may be restricted. Please contact Customer Service or your local distributor to inquire about product availability and export options.
Legal Information
UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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The Journal of Biological Chemistry, 277, 20453-20460 (2002)
Cyclic AMP decreases the phosphorylation state of myelin basic proteins in rat brain cell cultures.
Ulmer, J B, et al.
The Journal of Biological Chemistry, 262, 1748-1755 (1987)
D L Lefebvre et al.
The Biochemical journal, 355(Pt 2), 297-305 (2001-04-04)
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