A text-book of physiological chemistry / by Olof Hammarsten ; authorized translation from the author's enl. and rev. 5th German ed. by John A. Mandel.

Olof Hammarsten

Date:: 1904

Credit: A text-book of physiological chemistry / by Olof Hammarsten ; authorized translation from the author's enl. and rev. 5th German ed. by John A. Mandel. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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$are too uncertain to aid us in this connection. On the other hand a classifi- cation is important, and we cannot do without one, so we will give the follow- ing systematic summary of the chief groups of the protein bodies as suggested by Hoppe-Seyler and Drechsel, which will be of some aid to us. I. Simple Proteids or Albuminous Bodies. . i Seralbumin, | Lactalbumin, and others. c Fibrinogen, Globulins ■] Myosin, ( Serglobulins, and others. . (Casein, Nucleoalbumins -J ~ . ' . , ,, (Ovovitellin, and others. . „ . . ( Acid albuminate, Albuminates \■ . „ ,. „ ' (Alkali albuminate. Proteoses (and Peptones). 8 ' * ' ( Proteids coagulated by heat, and others. (Protamins and Histons). II. Compound Proteids. Haemoglobins. ( Mucins and Mucinoids, Glucoproteids < Amyloid, L Ichthulin, and others. _T , . .« (Nucleohiston, Nucleoproteids -| „ ± 7 , . , ,, ( Cytoglobm, and others. III. Albumoids or Albuminoids. Keratins. Elastin. Collagen. Reticulin. (Fibroin, Sericin, Cornein, Spongin, Conchiolin, Byssus, and others.) To this summary must be added that we often find in the investigations of animal fluids and tissues protein substances which do not coincide with the above scheme, or do so only with difficulty. At the same time it must be remarked that bodies will be found which seem to rank between the different groups, hence it is very difficult to sharply divide these groups. I. Simple Proteids or Albuminous Bodies. The simple proteids are nevBr-faj^qg constituents of the animal and vegetable organisms.__ They are especially found in the animal body, where they form the solid constituents of the muscles, and the blood-serum, and$