2 definitions by HistorianXXV

Top Definition
A certain act that must occur on Friday. The first human being to enlighten us as to the obligatory nature of this act is Rebecca Black, a distinguished artist who lived in the 21st century.
Rebecca Black: Friday, Friday, gotta get down on Friday!!!

First youtuber who heard the song: Oh god, she is so right!

(Everybody agrees, and the video went viral..an unforgettable day for mankind)
by HistorianXXV April 13, 2011
a Peptidyl transferase is the primary enzymatic functional part of the ribosome, which forms peptide links between adjacent amino acids using tRNAs during the translation process of protein biosynthesis.
In Bacteria, the 50S (23S component) ribosome subunit contains the peptidyl transferase component and acts as a ribozyme.

In eukaryotic cells, the 60S (28S component) ribosome subunit contains the peptidyl transferase component and acts as the ribozyme.
by HistorianXXV May 26, 2011

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