“…Manios et al, (2002) studied the effect of the heavy metals (Cd, Cu, Ni, Pb and Zn) on the total protein concentration of Typha latifolia plants growing in a substrate containing sewage sludge compost and watered with metaliferous waste water and found that higher concentrations of soluble protein was observed at lower concentration of heavy metals and inhibition occurred in case of stronger solutions. Protein synthesis were also significantly reduced with the treatment of Cu+2 in pea plants (Angelov et al, 1993), treatment of Cd in wheat seedling (Lesko et al, 2002), treatment of Pb in maize (Jana and Choudhary, 1984). Changes in some important protein involved in CO2 fixation (Rubisco, Rubisico activase, Rubisco binding protein, NH4+ assimilation and glutamate synthase, as a result of excess in barley leaves (Hordeum vulgare L. cv.…”