thertiary structure- what are domains

Question 1

Domains

Answer 1

Lobal structures with about 100-200 amino acids, they are structurally independent with characteristics of small globular proteins and have specific functions

Question 1

example of domain functions

Answer 1

catalytic domain, regulatory domain, domain for binding a cofactor, binds substrate initially, then pass it to a different domain

Question 2

domain categories

Answer 2

alpha (helices), beta(sheets), alpha/beta(both), few secondary structures

Question 3

alpha/beta

Answer 3

good for making globular proteins

Question 4

alpha/beta barrels

Answer 4

• most common in enzymes
• really good scaffolding of active site
• has active sits formed by loops from c teriminus, and ends of b-strands

Question 5

b-sheet twist

Answer 5

twisting is a result of L-amino acidds

Question 6

Rossman fold

Answer 6

a type of protein topology (the order in which secondary structural features are connected in the protein main chain) with alpha/beta/alpha secondary structures
- binds nucleotides and their derivatives