Potent Nucleoli Marker
Given the importance of
Nucleus and Related Markers to all branches of cell/molecular biology, we are dedicated to having the best.
We have just added a new
Fibrillarin Antibody.
Images: Immunofluorescent analysis of (A) C6 rat glioma cells and (B) Human embryonic kidney cells stained with mouse mAb to fibrillarin, MO22169, dilution 1:1,000 in red, in both cases costained with chicken pAb to vimentin, CPCA-Vim, dilution 1:10,000 in green. The blue is DAPI staining of nuclear DNA.
Nop1p/Fibrillarin was originally identified as a nucleolar protein of bakers yeast, Saccharomyces cerevisiae (accession P15646). The Nop1p protein is 327 amino acids in size (34.5kDa), is essential for yeast viability, and is localized in the nucleoli. Nop1p is the yeast homolog of a protein apparently found in all eukaryotes and archaea generally called fibrillarin. Fibrillarin/Nop1p is extraordinarily conserved so that the yeast and human proteins are 67% identical, and the human protein can functionally replace the yeast protein. This antibody is becoming widely used as a convenient marker for nucleoli in a wide variety of species (e.g. 4-6). The HGNC name for this protein is FBL. To raise the MCA-4H4 antibody, mice were injected with full length recombinant human fibrillarin.
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