Fibroin Flashcards
1
Q
Fibroin consists of what amino acids and what does this allow
A
Small amino acids such as glycine and alanine, allowing close packing and interlocking of R groups
2
Q
How is the overall structure of fibroin stabilised
A
By extensive hydrogen bonding and VdW interactions between sheets
3
Q
What is ratio composition of silk fibroin in terms of amino acids
A
3:2:1, Glycine Alanine Serine
4
Q
Silk fibroin consists of what repeats
A
(Gly-Ser-Gly-Ala-Gly-Ala)
5
Q
B sheets in silk fibroin are parallel or anti
A
Anti
6
Q
Why doesn’t silk extend?
A
Already highly extended
7
Q
The structure of silk fibroin is flexible, how?
A
Held together by numerous weak interactions rather than covalent bonds such as disulfide bonds
