âMaya Angelouâ. Lithograph Special Edition, An original print by artist Lynda Lanker. A portrait of Dr. Angelou created with her blessing, this hand-printed lithograph, printed by Master Printer Mark Mahaffey of Mahaffey Fine Art, comes matted (using archival quality materials) and is ready for framing. The edition is limited to just 100 prints, each priced at $275 plus $35 shipping. - Purchase Here â.
As mentioned above, ribosomes are the molecular machines responsible for protein synthesis. A ribosome is made out of RNA and proteins, and each ribosome consists of two separate RNA-protein complexes, known as the small and large subunits.
Structure of Ribosomes. A ribosome is made of two pieces (subunits). These two subunits are named according to their ability to sediment on a special gel (the Svedberg unit, a measure of the rate of sedimentation in centrifugation). The bigger the number given to the subunit the bigger the molecule.