Supersecondary Structures & Energy Changes

1

Alpha helices are a helix-helix structure

1

Which of the following best describes an alpha helix?

1

Helix-helix packing can be shown by highlighting every _ residues?

1

Alpha helices must follow particular rules when packing together

1

Describe the ridges of the following proteins

1

The angle between two packed helices depends on which type of ridges pack into which troughs.

1

The troughs of one alpha helix will be filled by the 'backbone' of another

1

Beta sheets twist slightly _ each other

1

The angle between two beta sheets is approx....?

1

Where in the plane is each color (ignore green)

1

The strands of beta sheets are held together by backbone hydrogen bonding

1

The angle between sheets is determined by their...

1

How are the aa side chains arranged in beta sheets?

1

When an alpha helix and a beta sheet pack together, the groove the beta sheet lies in tends to be made by amino acids how far apart?

1

Name three things that can be used in protein folding to encourage correct folding?

1

Negative Free Energy is less favorable

1

Concerning entropy- less order is more favorable

1

Which of the following is the equation for the free energy change of a folded protein

1

Hydrogen bonds are the least common type of bond in proteins

1

What's the enthalpy change of a H bond formation?

1

A hydrophobic core in water is entropically favorable

1

Why is hydrophobic cores in water _favorable?

1

Why do hydrophobic proteins fold?

1

As water ordering decreases, entropy decreases

1

Why is energy needed to maintain the folding of a (hydrophobic) protein (i.e. from hydrogen bonds etc.)?

1

Heating denatures a protein because it breaks the bonds required to offset the negative change in entropy caused by the protein folding i.e, it makes ΔH less negative

Structural Basis for Biological Function (Protein Folding) Quiz on Supersecondary Structures & Energy Changes, created by gina_evans0312 on 19/12/2013.

Supersecondary Structures & Energy Changes

Supersecondary Structures & Energy Changes

Alpha helices are a helix-helix structure

Which of the following best describes an alpha helix?

Helix-helix packing can be shown by highlighting every _ residues?

Alpha helices must follow particular rules when packing together

Describe the ridges of the following proteins

The angle between two packed helices depends on which type of ridges pack into which troughs.

The troughs of one alpha helix will be filled by the 'backbone' of another

Beta sheets twist slightly _ each other

The angle between two beta sheets is approx....?

Where in the plane is each color (ignore green)

The strands of beta sheets are held together by backbone hydrogen bonding

The angle between sheets is determined by their...

How are the aa side chains arranged in beta sheets?

When an alpha helix and a beta sheet pack together, the groove the beta sheet lies in tends to be made by amino acids how far apart?

Name three things that can be used in protein folding to encourage correct folding?

Negative Free Energy is less favorable

Concerning entropy- less order is more favorable

Which of the following is the equation for the free energy change of a folded protein

Hydrogen bonds are the least common type of bond in proteins