Juxtanodin: an oligodendroglial protein that promotes cellular arborization and 2',3'-cyclic nucleotide-3'-phosphodiesterase trafficking.

ABSTRACT: In the process of screening cell-type-specific genes, we identified juxtanodin (JN), an oligodendroglial protein featuring a putative C-terminal actin-binding domain. At the cellular level, JN in the rat CNS colocalized with 2',3'-cyclic nucleotide-3'-phosphodiesterase (CNPase), a cytoskeleton-related oligodendroglial protein. In the myelin sheath, JN was found mainly in the abaxon and the lateral few terminal loops. Its apposition to the myelinated axon, through the latter, defined an axonal subregion, herewith termed juxtanode, at the Ranvier node-paranode junction. During forebrain ontogenesis, JN expression paralleled that of MBPs but lagged behind CNPase. Juxtanodin transfection promoted arborization of cultured OLN-93 cells and augmented endogenous CNPase expression and transport to

SUBMITTER: Zhang B 

PROVIDER: S-EPMC1183540 | biostudies-literature | 2005 Aug

REPOSITORIES: biostudies-literature