Gene expression is linked to RNA transcription, which cannot happen without RNA polymerase. However, this is where the similarities between prokaryote and eukaryote expression end. Central to the ...

In eukaryotes, RNA pol I transcribes the genes that encode most of the ribosomal RNAs (rRNAs), and RNA pol III transcribes the genes for one small rRNA, plus the transfer RNAs that play a key role ...

Single-Molecule Footprinting reveals that RNA polymerase II (Pol II) occupancy is infrequent at mouse promoters. This results ...

Ribosomes are composed of two subunits, the small and large subunits ... This discovery led to the concept of the ribosome as a ribozyme, an RNA molecule with enzymatic properties. The catalytic ...

Spliceosomes are large and dynamic RNA-protein complexes. The major spliceosome consists of five subunits, U1, U2, U4, U6, and U5 small nuclear ribonucleoprotein particles (snRNPs, read "snurps ...