5 - 50 % of protein synthesis
||Penning de Vries FW, Brunsting AH, van Laar HH. Products, requirements and efficiency of biosynthesis: a quantitative approach. J Theor Biol. 1974 Jun45(2):339-77 p.356 bottom paragraphPubMed ID4367755
||Strehler, H. (1963). Time, cells and aging. London: Academic Press AND Schimke RT, Doyle D. Control of enzyme levels in animal tissues. Annu Rev Biochem. 1970 39 :929-76 DOI: 10.1146/annurev.bi.39.070170.004433PubMed ID4394639
||P.356 bottom paragraph: "From data of Strehler (primary source) and Schimke & Doyle (primary source) it is estimated that in slowly growing tissues 5-50 % of protein synthesis is resynthesis of hydrolysed proteins."