Maximal translation rate constant

Value 1000 Proteins/mRNA/hour
Organism Mammalian tissue culture cell
Reference Schwanhäusser B, Busse D, Li N, Dittmar G, Schuchhardt J, Wolf J, Chen W, Selbach M. Global quantification of mammalian gene expression control. Nature. 2011 May 19 473(7347):337-42. p.339 left column bottom paragraph and right column top paragraph and fig.3b Corrected value is from Schwanhäusser B et al., Corrigendum: Global quantification of mammalian gene expression control. Nature. 2013 Mar 7 495(7439):126-7. doi: 10.1038/nature11848. p.126 right column 2nd paragraphPubMed ID21593866, 23407496
Method Stable isotope labelling by amino acids in cell culture (SILAC). Newly synthesized RNA can be labelled with the nucleoside analogue 4-thiouridine (4sU). 4sU-containing mRNA can be purified and compared with the preexisting fraction to compute mRNA half-lives.
Comments NIH3T3 (mouse fibroblast) cells. On the basis of Ben-Tabou de-Leon S et al., (2009 PMID 19028486), the estimated maximal translation rate constant in sea urchin embryos is 140 copies per mRNA per hour, which is surprisingly close to the prediction of researchers' model.
Entered by Uri M
ID 106383