Fibroin

fibroin

[′fī·brə·wən] (biochemistry) A protein secreted by spiders and silkworms which rapidly solidifies into strong, insoluble thread that is used to form webs or cocoons.

Fibroin

a simple protein, the principal component of the natural silk and spider-silk fibers secreted by the silk-secreting glands of certain insects and the silk glands of spiders and other arthropods. Fibroin is a viscous, syrupy fluid, that hardens in the air to a tough, insoluble filament. Fibroin threads, coated with the protein sericin, form a silk fiber, as in silkworm cocoons.

Fibroin belongs to a group of structural proteins called scleroproteins. It is resistant to organic solvents, dilute acids and bases, and proteolytic enzymes. The fibroin molecule consists of an elongated polypeptide chain_o with repeating structural units, measuring approximately 7 Å. The group of amino acids in fibroin includes a high content of glycine (43 percent), alanine, serine, and tyrosine. The content of the amino acid tyrosine in fibroin is so much higher than in other proteins that fibroin is usually used as the prime source for obtaining tyrosine.

单词	fibroin
释义	fibroin fi·bro·in F0101900 (fī′brō-ĭn)n. An insoluble white protein that is the essential component of raw silk and spider-web filaments. fibroin (ˈfaɪbrəʊɪn) n (Zoology) a tough elastic protein that is the principal component of spiders' webs and raw silk fi•bro•in (ˈfaɪ broʊ ɪn) n. an indigestible protein that is a principal component of spider webs and silk. [1860–65; < French] Fibroin fibroin [′fī·brə·wən] (biochemistry) A protein secreted by spiders and silkworms which rapidly solidifies into strong, insoluble thread that is used to form webs or cocoons. Fibroin a simple protein, the principal component of the natural silk and spider-silk fibers secreted by the silk-secreting glands of certain insects and the silk glands of spiders and other arthropods. Fibroin is a viscous, syrupy fluid, that hardens in the air to a tough, insoluble filament. Fibroin threads, coated with the protein sericin, form a silk fiber, as in silkworm cocoons. Fibroin belongs to a group of structural proteins called scleroproteins. It is resistant to organic solvents, dilute acids and bases, and proteolytic enzymes. The fibroin molecule consists of an elongated polypeptide chain_o with repeating structural units, measuring approximately 7 Å. The group of amino acids in fibroin includes a high content of glycine (43 percent), alanine, serine, and tyrosine. The content of the amino acid tyrosine in fibroin is so much higher than in other proteins that fibroin is usually used as the prime source for obtaining tyrosine.
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fibroin

fi·bro·in

fibroin

fi•bro•in

Fibroin

fibroin

Fibroin