Number of copies of alkaline shock protein 23 (Asp23) and superoxide dismutase SodA2 (each)

Range ~25,000 molecules per cell
Organism Bacteria Staphylococcus aureus
Reference Maass S et al., Efficient, global-scale quantification of absolute protein amounts by integration of targeted mass spectrometry and two-dimensional gel-based proteomics. Anal Chem. 2011 Apr 1 83(7):2677-84. p.2681 left column top paragraphPubMed ID21395229
Method "[Researchers] combined targeted mass spectrometry for the accurate determination of absolute protein abundance of specific proteins with the resolving power of 2-D PAGE to obtain a global view of a large number of protein concentrations."
Comments "In S. aureus, the alkaline shock protein 23 (Asp23) and superoxide dismutase SodA2 proved to be most abundant in growing cells with copy numbers of about 25,000 per cell."
Entered by Uri M
ID 108411