The amino acid cysteine has an R group containing sulphur...........?

Question

Explain why this is important in forming the tertiary and quaternary structure of a protein..

Answer 1

becuase the sulfur is very reactive, it is at the end of the chain and it is capable of forming disulfide bonds.

Remember, tertiary structure is defined as the interactions between R groups of amino acids and quaternary structure is the interactions between subunits

Answer 2

The sulfur of cysteine is capable of making disfulide bonds with the sulfur of an other cysteine. This is a covalent interaction (meaning it's strong), so it helps to keep the tertiary and quaternary structure of the protein stabilized.

Answer 3

verify the spelling amino acids contain a difficulty-free amine crew (NH2) and an acidic carboxylic acid crew (CO2H) sulfur containing amino acids contain cystiene and methionine an fragrant amino acids is phenyalanine polypeptide chains are the end results of condenstaion polymerization. An amine crew links to an acid crew, loosing a molecule of water.

Answer 4

Because it can form disulfide bonds: the bond between one sulfur atom from one cystein molecule with another sulfur atom from another cysteine molecule. Tertiary structure of proteins are resulted form disulfide bonds.

Answer 5

This is because they don't directly influence the folding of a protein into its native conformation. Instead, they "lock" the protein in its final form after all the other bonds have been established such as the hydrophobic and hydrogen bonds.

Answer 6

i dont know this one either,sorry..phew..tough questions..