Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material

Narrower term/s

• albumin (general protein)[+]
  • albumen (egg white protein)
• casein
• hemoglobin
• hemoprotein
• collagen[+]
  • gelatin [NP] [+]
    • photographic gelatin
  • animal glue [NP] [+]
    • bone glue
    • fish glue [+]
      • isinglass (fish glue)
    • hide glue [+]
      • rabbitskin glue
  • ossein [NP]
• fibroin
• keratin
• sericin
• zein
• antibodies

Anotations

Scope note:

Any of a large class of natural polymers composed of chains of amino acids connected by peptide linkages. Proteins occur in the cells of all living organisms and in biological fluids. Their primary structure is determined by the order of their amino acids. Examples of soluble proteins include enzymes and antibodies. Insoluble proteins include keratin and collagen. Examples of protein containing compounds are leather, gelatin, albumen, animal glue, silk, ivory, egg, and casein.