Reference: Wu P, et al. (1998) NCL1, a novel gene for a non-essential nuclear protein in Saccharomyces cerevisiae. Gene 220(1-2):109-17

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Abstract

The nucleolar protein Nop2p is an essential gene product that is required for pre-rRNA processing and ribosome biogenesis in Saccharomyces cerevisiae (Hong, B. et al., 1997, Mol. Cell. Biol., 17, 378-388). A search for proteins similar to Nop2p identified a novel yeast gene product that also shares significant homology with the human proliferation associated nucleolar protein p120. The gene encoding this 78kDa protein was termed NCL1 (for nuclear protein 1; corresponding to YBL024w). Ncl1p and Nop2p contain an evolutionarily conserved motif that has been termed the 'NOL1/NOP2/fmu family signature' (NOL1 encodes p120). Epitope tagged Ncl1p was found to be localized to the nucleus, including the nucleolus, and was concentrated at the nuclear periphery. NCL1 is not essential. Strains containing a disruption of NCL1, or strains overexpressing NCL1, grow essentially identically to wildtype NCL1 strains on a number of different media and at different temperatures. Disruption of NCL1 does not affect steady-state levels of large and small ribosome subunits, monoribosomes, and polyribosomes. However, disruption of NCL1 leads to increased sensitivity to the antibiotic paromomycin.

Reference Type
Journal Article
Authors
Wu P, Brockenbrough JS, Paddy MR, Aris JP
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