title: Fractionation of central nervous system myelin proteins by reversed-phase high-performance liquid chromatography.
abstract: Chromatographic fractionation of central nervous system myelin proteins is hampered by their poor solubility in water and strong association with lipids. Moreover, several myelin membrane proteins undergo posttranslational acylation which further increases their hydrophobicity. Here, a method is described for a two-step delipidation and high-resolution fractionation by reversed-phase high-performance liquid chromatography of all myelin proteins. The elution was monitored of the two major protein components, i.e. myelin basic protein (MBP) and proteolipid protein (PLP), as well as of minor components, viz. myelin-associated glycoprotein (MAG) and myelin/oligodendrocyte glycoprotein (MOG). Whereas MBP and MOG elute as single sharp protein peaks upon chromatography, PLP and MAG are resolved into several different components. Following their delipidation and separation, all proteins including the hydrophobic transmembrane proteins can be transferred to fully aqueous solutions without detergents. The overall yield of myelin proteins obtained in this way exceeds 85%.
authors.affiliation: Department of Immunology and Medical Microbiology, TNO Medical Biological Laboratory, Rijswijk, Netherlands.
authors.forename: J M
authors.initials: JM
authors.lastname: van Noort
authors.forename: M
authors.initials: M
authors.lastname: el Ouagmiri
authors.forename: J
authors.initials: J
authors.lastname: Boon
authors.forename: A C
authors.initials: AC
authors.lastname: van Sechel
mesh_terms: D000818:Animals; D002417:Cattle; D002490:Central Nervous System / Q000737:chemistry*; D005591:Chemical Fractionation; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004591:Electrophoresis, Polyacrylamide Gel; D004797:Enzyme-Linked Immunosorbent Assay; D006168:Guinea Pigs; D006801:Humans; D008055:Lipids / Q000737:chemistry; D008562:Membrane Glycoproteins / Q000737:chemistry / Q000302:isolation & purification; D004676:Myelin Basic Protein / Q000737:chemistry / Q000302:isolation & purification; D009185:Myelin Proteins / Q000737:chemistry / Q000302:isolation & purification*; D018991:Myelin Proteolipid Protein; D018992:Myelin-Associated Glycoprotein; D063308:Myelin-Oligodendrocyte Glycoprotein; D013056:Spectrophotometry, Ultraviolet
chemical_list: D008055:Lipids; C571326:MOG protein, human; D008562:Membrane Glycoproteins; D004676:Myelin Basic Protein; D009185:Myelin Proteins; D018991:Myelin Proteolipid Protein; D018992:Myelin-Associated Glycoprotein; D063308:Myelin-Oligodendrocyte Glycoprotein