io6 



INDEX 



Dipep tides, nomenclature, 33, 47. 



solubility, 51. 

 Dodecapeptide, 7, 45. 



EDBSTIN. polypeptides from, 85. 

 Elastin, polypeptides from, 85. 

 Enzymes, action on polypeptides, 63-79. 



different action, on proteins, 9. 



extracts, 67. 



in blood plasma, 77. 



lupine, 69. 



Nepenthes, 75. 



papain, 75. 



pepsin, 66. 



trypsin, 63. 



wheat, 69. 



yeast, 68, 77. 

 Ester-like combination, 3. 

 Esters of amino acids, 6, 7. 



of polypeptides, 6, 7, 54. 

 Ether-like combination, 3. 



FISCHER'S polypeptides, 5-8, 27-45, 46-50, 

 51-79- 



7-ACID, 19. 



Gelatin, polypeptides from, 85. 

 Gliadin, polypeptides from, 85. 

 Glycine, as unit, 7. 



amide, 60. 



anhydrides, 2, 5, 17-18, 27. 



carboxylic acid, 57. 



ester, 2, 3, 17. 

 Glycyl-alanine, 8, 31. 



d-alanine, 81, 82. 



alanine anhydride, 29, 81, 82, 84. 



d-alanyl-glycyl-1-tyrosine, 42. 



diglycinimide, 61. 



glycine, 6, 27, 58. 

 amide, 60. 



carbamino acid, 56. 



carboxylic acid, 58, 59. 



ester, 27. 



group, 6, 19, 37. 



leucine, 48. 

 amide, 60. 



1-leucine anhydride, 81. 



1-phenylalanine, 33. 



1-tryptophane for detecting enzymes, 



73- 



1-tyrosine, 6, 29, 51, 83. 



action of enzymes, 68, 71, 74. 



anhydride, 29, 81,82, 84. 



l-tyrosyl-glycine, 41. 



glycyl-d-alanine, 41. 



prolme anhydride, 83. 



valine anhydride, 83. 

 Grimaux's investigations, 16. 

 Guanidine group in proteins, n, 89. 



HALOGEN acyl chlorides, 6, 31. 



derivatives of proline, 32. 



Heptapeptide, 7, 39, 44. 

 Hexapeptides, 7, 39, 44. 

 Hippurazide, 20. 

 Hippuric acid, 5, 19, 20. 



Hippuryl-alanine, 21. 



alanyl-alanine, 21. 



asparagyl-aspartic acid, 22. 



aspartic acid, 22. 



aspartyl-glycine ester, 22. 



azoimide, 20. 



chloride, 20. 



disaspartyl-aspartic acid hydrazide, 22. 



glycine, 2, 19, 20. 



hydrazine, 20. 

 Histidyl-histidine, 6. 

 Hofmeister's summary, 2-5. 



IMIDES of amino acids and polypeptides, 60- 



62. 

 Imino diacetic acid, 61. 



diacetyl - N-phenyl - glycine anhydride, 



33- 



Isolation of polypeptides from proteins, 80. 

 Isomers amongst polypeptides, 8. 



LACTAM, 58, 59. 



Lactim, 58, 59. 



Lactimide, i, 13. 



Leuceines, 16. 



Leuchs on glycine carboxylic acids, 57-59. 



Leucine amide, 60. 



anhydride, 28. 



configuration, 49-50. 



Leucinimide, i, 13, 80, 83. 

 Leucyl-alanine, 29, 51, 52. 



anhydride, 29. 



alanyl-tyrosine, 8. 



asparagine, 48. 



diglycyl-glycine, 39, 51. 



glycine, 51, 75 

 anhydride, 29. 



glycyl-glycine, 39, 52. 



leucine, 6, 28, 51. 



phenylalanine, 47. 



tyrosine, 51. 



valine anhydride, 83. 

 1-Leucyl-d-alanine, 83. 



d-glutamic acid, 83. 



1-leucine, 33, 65. 



octaglycyl-glycine, 39. 



triglycyl-1-tyrosine, 82. 



1-tryptophyl-glutamic acid, 42. 

 Liebig's correct idea of proteins, i. 

 Lilienfeld's investigations, 17. 



Linking together of amino acids, 2, 19-26. 

 Lysine in proteins, n, 9. 

 Lysyl-lysine, 6. 



METHYLATED polypeptides, 33-34. 

 Modes of combination of amino acids, 3. 

 Molecular weight of octadecapeptide, 8, 40. 



proteins, 40. 



Mulder's supposition of composition of pro- 

 teins, i. 



NASSB'S suggestion, 3. 

 Nitroarginine, 9, 89. 

 Nitroclupeine, 9, 89. 

 Nitrous acid, action on proteins, 9, 89. 

 on polypeptides, 53. 



