1 86 THE CHEMICAL CONSTITUTION OF THE PROTEINS 



Leucine, dextro, 139, 140. 



discovery, 88. 



- ester, 20, 23, 43. 



extraction, 24. 



isolation, 20, 26-29. 

 ^- laevo-, 140. 



loss during analysis, 42. 

 occurrence, 88. 



rotation, 149. 



separation from aspartic acid, 31. 



isoleucine, 29. 



valine, 26, 27. 



into optical isomers, 139, 141. 



synthesis by Bouveault and Locquin, 89. 



Erlenmeyer and Kunlin, 89. 



Fischer and Schmitz, 89-90. 



Hufner, 88. 



Walden inversion, 144-145. 

 Leucinimide, 33. 



Leucosin, 46. 



composition, 57. 



distribution of N, 66. 

 Leucyl-glutamic acid, 2. 

 Liebermann's reaction, 134. 

 Linseed protein, 47. 



composition, 56. 



Livetin, distribution of N, 66. 

 Loss during analysis, 40-43. 

 Lota-histone, i. 



composition, 53. 

 Lysatinine, 117. 



Lysine, 3, 8, 44, 47, 51, 63, 72, 81, 117, 123. 



constitution, 123. 



discovery, 123. 



estimation, 39, 79. 



- isolation, 34, 36, 39. 



rotation, 149. 



separation from arginine and histidine, 



36. 



synthesis by Fischer and Weigert, 123. 

 v. Braun, 123-124. 



MAIZE-GLUTEN, composition, 57. 



Membrane, fat particles of milk, 51. 



Metaproteins, 2. 



Methods, 5. 



Methylation method, 43. 



Methylimidazole, 62. 



Monoamino acids, 6, 10, n, 44, 45, 63. 



isolation, 12-33. 

 list, 2, 3. 



loss during analysis, 40-43. 



nitrogen, 63, 64, 66. 

 estimation, 65, 68, 79. 



Mucin, i. 



Muscle, composition, 51. 



distribution of N, 66. 

 Myosinogen, i. 



NATURAL amines, 7. 

 Neurokeratin, composition, 61. 

 Nitrogen, amino, 63. 

 estimation, 69-73, 78. 



amide, 63, 74. 



diamino, 63. 



distribution, 10, 63-81. 



Nitrogen, humin, 35, 65, 66, 75. 



monoamino, 63 



total, 34, 66, 74, 80. 

 Nitrous acid, action of, 67. 

 Nucleoproteins, i, 2. 



OAT-GLUTEN, composition, 57. 



Optical activity of amino acids, 6, 10, 139- 



149. 

 Ornithine, 8, 10, 117. 



dextro-, 140. 



laevo-, 140. 



rotation, 149. 



separation into optical isomers, 141. 



synthesis by Fischer, 118. 



Fischer and Zemplen, 119. 



Sorensen, 119. 



Ornithuric acid, 117. 

 Oryzenin, i. 

 Ovalbumin, 145. 



composition, 54. 

 Ovokeratin, 50. 



composition, 61. 

 Ovomucoid, i. 

 Oxy-amino acids, 4. 

 Oxyproline, 3, 6, 8, 10, 63, 67, 132. 



characterisation, 33. 



constitution, 132. 



discovery, 132. 



isolation, 33. 



occurrence, 132. 



rotation, 149. 



synthesis by Leuchs, 132. 

 Oxytryptophane, 4. 



PARAMUCIN, composition, 62. 

 Peptones, 2, 52. 



composition, 55. 

 Phaseolin, composition, 56. 



distribution of N, 66. 

 Phenylalanine, 3, 6, 8, 9, 46, 50, 51, 63, 64, 



68,93. 



characterisation, 30. 



configuration changes, 144. 



constitution, 93. 



discovery, 93. 



isolation, 30. 



occurrence, 93. 



rotation, 149. 



separation into optical isomers, 141. 



synthesis by Erlenmeyer and Lipp, 93. 



Erlenmeyer jun., 94. 



Fischer, 96. 



Sorensen, 96-97. 



Wheeler and Hofmann, 97. 



Walden inversion, 144. 

 Phosphoproteins, i, 2, 48. 



composition, 58. 



Phosphorescent infusoria, composition, 62. 

 Phosphotungstic acid precipitation, 65, 75- 



76, 80. 



Placenta, composition, 62. 

 Plastein, 52. 



composition, 55. 

 Polypeptides, 2, 7, 10, 41, 51, 141. 

 Prolamines, 47. 



