11] STRUCTURE AND ACTIVITY OF PAPAIN 207 



8. R. K. BROWN, B. V. JAGER and E. L. SMITH, Unpublished Observations. 



9. A. STOCKELL and E. L. SMITH,/. Biol. C/iem., 227, 1 (1957). 



10. p. D. BOYER, /, Am. Chem. Soc, 76, 4331 (1954). 



11. B. J. FINKLE and E. L. SMITH, Federation Proc, 16, 180(1957). 



12. A. K. BALLS and H. LiNEWEAVER, y. Biol. Chem., 130, 669 (1939). 



13. J. R. KiMMEL, E. o. P. THOMPSON and E. L. SMITH, /. B'lol. Chem., Ill, 151 



(1955). 



14. E. L. SMITH, A. STOCKELL and J. R. KIMMEL, 7. Biol. Chem., 207, 551 (1954). 



15. J. CLOSE, s. MOORE and e. j. biowood, Enzymologia, 16, 137 (1953). 



16. E. o. P. THOMPSON, Pioc. Int. Wool Textile Research Conference, Australia, C, 



102 (1956). 



17. F. SANGER, Advances in Protein Chem., 7, 1 (1952). 



18. s. MOORE and w. h. stein, /. Biol. Chem., 176, 367 (1948). 



19. J. R. SPIES and d. c. chambers, /ina/. Chem., 22, 1447(1950), 



20. J. R. KIMMEL and e. l. smith, unpublished observations. 



21. E. L. SMITH and J. r. kimmel, Proc. Int. Wool Textile Research Conference, 



C, 199 (1956). 



22. w. J. dreyer and h. neurath,/. Biol. Chem., 217, 527 (1955). 



23. s. MOORE, c. h. w. hirs and w. h. stein, Federation Proc, 15, 840 (1956). 



24. D. H. spackman, e. l. smith and d. m. brown, /. Biol. Chem., 212, 255 

 (1955). 



25. E. L. SMITH and d. h. spackman, J. Biol. Chem., 212, 27Ï (1955). 



26. R. L. HILL and e. l. smith. Federation Proc, 14,226(1955). 



27. E. l. SMITH and r. l. hill, Ille Congr. intern, biochim. (Brussels), 1955, 



28. E. L, SMITH, Proc Int. Wool Textile Research Conference, C, 407 (1955). 



29. R. L. HILL and e. l. smith,/. Biol. Chem., 228, 577 (1957). 



30. R. L. hill and e, l, smith,/. Biol. Chem., 224, 209 (1957). 



31. R. l. hill, unpublished observations. 



32. R. L. hill and e. l. smith, Biochim. et biophys. acta., 19, 376 (1956). 



33. G. E. PERLMANN, Nature, 173, 406 (1954). 



34. D. H. spackman, s. MOORE and w. h, stein, FÉ-^^erar/o« Proc, 15, 358 (1956) 



35. R, L, hill and e, l. smith, /. Biol. Chem.; in press. 



36. E. L. SMITH, Proc Nat. Acad. Sc, 35, 80 (1949), 



37. E. L. SMITH, Federation Proc, 8, 581 (1949). 



38. E, L. SMITH and r. lumry. Cold Spring Harbor Symposia Quant. Biol, 14, 168 

 (1950). 



39. B. J. FINKLE and e. l. smith, unpublished observations. 



40. E. J. COHN and J. t, edsall. Proteins, Amino Acids, and Peptides, Reinhold, 



New York (1943), 



41. R. E. benesch and r. benesch, /. Am. Chem. Soc, 11, 5877 (1955). 



42. E. L. smith, v. CHAVRÉ and m. j. parker, /. Biol. Chem.; in press. 



43. E. L. SMITH and m. j. parker, unpublished observations. 



44. R, B. JOHNSTON,/. Biol. Chem., 221, 1037 (1956). 



45. J. DURELL and J. s. fruton, /. Biol. Chem., 207, 487 (1954). 



46. s. A. BERNHARD and H. GUTFREUND, Biochem. J., 63, 61 (1956). 



47. R. lumry and E. l. smith, Faraday Society Discussions, 20, 105 (1955). 



