Fibrillarin is a highly conserved component of a nucleolar small ribonucleoprotein complex in mammals, involved in the processing of ribosomal RNA during ribosomal biogenesis. The protein runs at ~35kDa on SDS-PAGE and is very rich in basic amino acids having a PI of 9.8. Fibrillarin was originally identified in humans since autoantibodies staining nucleoli were seen in some patients with the autoimmune disease scleroderma. Subsequently the protein fibrillarin was found to be the human homologue of Nop1p, a Saccharomyces cerevisiae nucleolar protein, the two proteins being 67% identical. We have generated an alignment of the sequences of fibrillarin and homologues downloadable from here. The fibrillarin molecule consists of an N-terminal glycine and arginine rich region followed by a highly conserved globular domain. Embryonic knockout of the fibrillarin gene in mice is lethal, suggesting fundamental importance of this protein. Autoantibodies to fibrillarin are also seen in patients with the autoimmune disease systemic sclerocis.
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Name Catalog # Size ATPase Na+/K+ transporting alpha 1 MO25023 50 ul Fibrillarin MO22169 100 µl Fibrillarin RA22147 100 ul Fibrillarin/Nop1p- Nucleolar Marker MO22108 500 ul FluoGreen Tracer SF41000 100 ul GFP GT22101 100 ul Green Fluorescent Protein CH22124 100 ul of 1 mg/ml Green Fluorescent Protein MO22184 100 ul Green Fluorescent Protein (GFP) MO22190 100 ul Green Fluorescent Protein (GFP) RA22134 100 ul of 1 mg/ml High-mobility group protein B1/HMGP1 MO22134 100 ul Lamin A/C CH22136 100 ul Lamin A/C MO22124 100 ul mCherry GT22108 100 ul mCherry MO22192 100 ul mCherry - Mouse MO22140 100 ul mCherry-Chicken CH22115 100 ul mCherry-Rabbit RA22117 100 ul MiTF (Microphthalmia-Associated Transcription Factor) MO47034 0.5 ml Panspecific Nuclear Pore Complex Marker MO22107 500 ul S-Tag/S15 MO22203 100 ul S-Tag/S15 MO22206 100 ul TAF15 MO22114 100 ul Tar DNA Binding Protein 43 (TDP43) MO22117 100 ul