Protein structure

Question 1

Describe primary structure

Answer 1

amino acids makes a polypeptide

order determines the structure and function

Question 2

describe secondary structure x helix

Answer 2

spiral R groups outwards

stabilised by hydrogen bonds

Question 3

describe secondary structure b pleta sheets

Answer 3

polypeptide are alongside each other
can be parallel or antiparallel
It can fold back on itself
stabilised by hydrogen bonds

Question 4

Describe tertiary structure

Answer 4

regions of secondary structure

held by interaction of r groups

Question 5

what effects does ph and temp have on tertiary structure?

Answer 5

high temp, destabilize and denature

change in pH, no longer bond, unfolds

Question 6

describe quaternary structure

Answer 6

more than one polypeptide subunit connected y binding of R groups
cooperativity effects between subunits
affect properties of other subunits