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M Cifuentes, V Baeza, P M Arrabal, R Visser, J M Grondona, N Saldivia, F Martínez, F Nualart, K Salazar
IIIG9 is the regulatory subunit 32 of protein phosphatase 1 (PPP1R32), a key phosphatase in the regulation of ciliary movement. IIIG9 localization is restricted to cilia in the trachea, fallopian tube, and testicle, suggesting its involvement in the polarization of ciliary epithelium. In the adult brain, IIIG9 mRNA has only been detected in ciliated ependymal cells that cover the ventricular walls. In this work, we prepared a polyclonal antibody against rat IIIG9 and used this antibody to show for the first time the ciliary localization of this protein in adult ependymal cells...
February 2018: Molecular Neurobiology
Patria E Danielson, Lauren N Sautkulis, Pamela E Foye, Peter B Hedlund, Monica J Carson
The present descriptive study shows the expression pattern of an mRNA, IIIG9, whose most striking expression is seen along the lining of all four ventricles of the adult rat brain. Lower levels of expression are evident in other areas of the brain, notably in cortex, hippocampus, and various thalamic, hypothalamic and brainstem nuclei where it seems to be primarily neuronal, with little or no expression in white matter tracts. However, expression in cells on both sides of the basement membrane of the ependyma suggests expression in other cell types such as astrocytes, neuroblasts and putative precursors (subependyma), as well as ependymal cells and tanycytes...
January 2002: Brain Research. Gene Expression Patterns
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