1. Achyuthan, K. E. and Ramachandran, L. K. (1980)Proc. Indian Natl. Sci. Acad.,B 46 (No. 5) 603.
2. Achyuthan, K. E., Ranganatha Rao, K. and Ramachandran, L. K. (1980)Indian J. Biochem. Biophys.,17, 228.
3. Bailey, K. and Webb, E. (1944)Biochem. J.,38, 394.
4. Boyer, P. D. (1954)J. Am. Chem. Soc.,76, 4331.
5. Butler, L. G. (1971) inThe Enzymes, Vol. IV, ed. P. D. Boyer (New York: Academic Press) p. 529.