Number of protein types to make ribosome

Value 56 Unitless Range: Table - link Unitless
Organism Bacteria Escherichia coli
Reference Arnold RJ, Reilly JP. Observation of Escherichia coli ribosomal proteins and their posttranslational modifications by mass spectrometry. Anal Biochem. 1999 Apr 10 269(1):p.108 table 1PubMed ID10094780
Method matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-MS)
Comments 55 of the 56 subunit proteins were observable. (Wikipedia, ribosomal protein:) "All of them are different with three exceptions: one protein is found in both subunits (S20 and L26), L7 and L12 are acetylated and methylated forms of the same protein, and L8 is a complex of L7/L12 and L10."
Entered by Ron Milo, Paul Jorgensen, Mike Springer
ID 100111