期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 59, 期 11, 页码 1851-1871出版社
SPRINGER BASEL AG
DOI: 10.1007/PL00012510
关键词
glycoprotein; myelin; myelin-associated glycoprotein; myelin-oligodendrocyte glycoprotein; oligodendrocyte; peripheral myelin protein-22; protein zero; Schwann cell
Myelin sheaths are formed around axons by extending, biochemically modifying and spiraling plasma membranes of Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS). Because glycoproteins are prominent components of plasma membranes, it is not surprising that they have important roles in the formation, maintenance and degeneration of myelin sheaths. The emphasis in this review is on four integral membrane glycoproteins. Two of them, protein zero (PO) and peripheral myelin protein-22 (PMP-22), are components of compact INS myelin. The other two are preferentially localized in membranes of sheaths that are distinct from compact myelin. One is the myelin-associated glycoprotein, which is localized at the inside of sheaths where it functions in glia-axon interactions in both the INS and CNS. The other is the myelin-oligodendrocyte glycoprotein, which is preferentially localized on the outside of CNS myelin sheaths and appears to be an important target antigen in autoimmune demyelinating diseases such as multiple sclerosis.
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