... (e.g. measurements of protein levels for some enzymes of the ubiqui-tination machinery and proteasomal subunits, of the rate of ubiquitination of protein substrates, and of proteasome activities).Whole-body ... body and individ-ual tissues of ruminant. In: Asplund, J.M. (ed.) Principles of Protein Nutrition of Ruminants. CRC Press, Orlando, Florida, pp. 147–178.Lobley, G.E. (1998) Nutritional and hormonal ... 43–59.MacRae, J.C., Walker, A., Brown, D. and Lobley, G.E. (1993) Accretion of total protein and individual amino acids by organs and tissues of growing lambs and the ability of nitrogen balance techniques...