Examples of estimated copy numbers per cell

Range Table - link protein copies/cell
Organism Human Homo sapiens
Reference Wisniewski JR, Ostasiewicz P, Dus K, Zielinska DF, Gnad F, Mann M. Extensive quantitative remodeling of the proteome between normal colon tissue and adenocarcinoma. Mol Syst Biol. 2012 8: 611. doi: 10.1038/msb.2012.44. p.9 table IVPubMed ID22968445
Primary Source See pointers to refs beneath table
Method "To survey and compare the proteomes of colonic mucosa (normal or N) and colon cancer (cancer or C), [researchers] analyzed archival FFPE [formalin-fixed and paraffin-embedded] clinical samples originating from eight patients (Supplementary Table 1 Materials and methods). In addition, for seven of the patients [researchers] analyzed the proteomes of nodal metastases (M). Laser capture microdissection was used to obtain enriched populations of enterocytes, primary cancer, and metastasizing cells (Supplementary Figure 1). [They] made an effort to reduce any contamination by stroma and therefore did not emphasize identification of secreted proteins. From each sample, a volume of about 175 nl of cells were collected and processed using the FFPE-FASP (filter aided sample preparation) procedure (Wisniewski et al, 2011a)."
Comments "Core histones are among the most abundant proteins in the eukaryotic cells. [Researchers'] copy numbers for these proteins were 1.1×10^8 in normal mucosa to 4.4×10^8 in undifferentiated CaCo-2 cells (Table IV)...Western blot-based quantitative characterization of RNA polymerase II complex in HeLa cells by Kimura et al (1999) revealed that its subunits are present at 1.5–3.0×10^5 copies per cell (Table IV)." See notes beneath table
Entered by Uri M
ID 111218