XB-ART-20644
Clin Exp Rheumatol
1994 Jan 01;12 Suppl 11:S15-8.
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The SS-A/SS-B autoantigenic complex: localization and assembly.
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The subcellular distribution of Ro ribonucleoprotein particles (Ro RNPs) and their constituents was determined using mammalian tissue culture cells and Xenopus laevis oocytes. Cell fractionation revealed that Ro RNPs are restricted to the cytoplasm, while the Ro RNP-specific proteins were also present in the nucleus. Transport studies indicated that the protein components of Ro RNPs are actively imported into the nucleus while the RNA component accumulates in the cytoplasm. These results suggest a model for the assembly of Ro RNPs.
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