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Chitin
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Chitin n is a long-chain polymer of N-acetylglucosamine, an amide derivative of glucose. Chitin is the second most abundant polysaccharide in nature; an estimated 1 billion tons of chitin are produced
A close-up of the wing of a leafhopper; the wing is composed of chitin.
A close-up of the wing of a leafhopper; the wing is composed of chitin.
A cicada emerges from its nymphal exoskeleton; the shed exoskeleton is mostly modified chitin (sclerotin) but the wings and much of the adult body are
A cicada emerges from its nymphal exoskeleton; the shed exoskeleton is mostly modified chitin (sclerotin) but the wings and much of the adult body are still unsclerotized chitin at this stage
Keratin
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Keratin is one of a family of structural fibrous proteins also known as scleroproteins. It is the key structural material making up scales, hair, nails, feathers, horns, claws, hooves, and the outer l
Chitin
…industry. The structure of chitin is comparable to cellulose, forming crystalline nanofibrils or whiskers. It is functionally comparable to the protein keratin. Chitin has proved useful for several medicinal, industrial and biotechnological purposes. The English word chitin comes from the French word chitine…
The horns of the impala are made of keratin covering a core of bone.
The horns of the impala are made of keratin covering a core of bone.
A human toenail that fell off after a small trauma.
A human toenail that fell off after a small trauma.
Protein sequence alignment of human keratin 1, 2A, 3,4, 5, 6A, 7, and 8 (KRT1 – KRT8). Only the first rod domain is shown above. Alignment was created
Protein sequence alignment of human keratin 1, 2A, 3,4, 5, 6A, 7, and 8 (KRT1 – KRT8). Only the first rod domain is shown above. Alignment was created using Clustal Omega.