NuA4 (nucleosome acetyltransferase of H4) promotes transcriptional initiation of TFIID (a complex of TBP and TBP-associated factors [TAFs])-dependent ribosomal protein genes involved in ribosome biogenesis. However, it is not clearly understood how NuA4 regulates the transcription of ribosomal protein genes. Here, we show that NuA4 is recruited to the promoters of ribosomal protein genes, such ...

Most budding yeast introns exist in the many duplicated ribosomal protein genes (RPGs) and it has been posited that they remain there to modulate the expression of RPGs and cell growth in response to stress. However, the mechanism by which introns regulate the expression of RPGs and their impact on the synthesis of ribosomal proteins remain unclear. In this study, we show that introns determine...

Although ant ibodies against nuclear antigens are considered the hal lmark of systemic lupus e ry thematosus (SLE) 1, antibodies against cytoplasmic consti tuents have also been identified (1, 2). Despite their recogni t ion more than 25 years ago, the prevalence, antigenic specificities, and disease associations of antir ibosomal antibodies (ARA) are all controversial (3-10) . Since these prob...

The ribosome serves as the site of protein synthesis in all cells. Biogenesis of the mammalian ribosome is a complex process involving the coordinated expression of four ribosomal RNA molecules and approximately 75 ribosomal proteins. In order to understand the mechanisms governing ribosome biosynthesis, it is necessary to elucidate the structure and organization of its components. A cDNA clone...

Mitochondrial ribosomal protein 20 (Mrp20) is a component of the yeast mitochondrial large (54S) ribosomal subunit and is homologous to the bacterial L23 protein, located at the ribosomal tunnel exit site. The carboxy-terminal mitochondrial-specific domain of Mrp20 was found to have a crucial role in the assembly of the ribosomes. A new, membrane-bound, ribosomal-assembly subcomplex composed of...

The physiological importance of translational regulation in controlling the synthesis of ribosomal proteins from the L11 ribosomal protein operon was determined for the classical regulatory phenomena of growth rate dependence and stringent control. Translational regulation of the L11 operon by ribosomal protein L1, the L11 operon-specific translational repressor protein, was abolished by introd...