Exam 4: Protein Structure

Which of the following are negatively charged amino acids at pH = 7?

At the interface between subunits of a protein with quaternary structure,which of the following interactions between amino acid side chains would contribute to the stability of the dimer?

How many different protein folds are recognized in the formal system of organization,referred to as SCOP: Structure Organization of Proteins?

To what organic reaction class does peptide bond formation belong?

The protein fold known as the Rossman fold is found in proteins that commonly bind

Of the three proposed models of globular protein folding,which one describes the initial formation of all secondary structures,followed by the arrangement of those secondary structures into a final tertiary structure?

What is a current hypothesis that explains the infectious nature of prion diseases?

Which linear sequence of bonded atoms can be found in the backbone of polypeptides?

Which class of protein structures does the protein shown below fit into?

Of the three proposed models of globular protein folding,which one describes formation of an initial disordered protein interior,followed next by ordering of secondary and tertiary structures?

In multi-subunit proteins,such as hemoglobin,the different subunits are usually bound to one another by all of the following EXCEPT

Identify the four images below,which represent the four classes of protein structures commonly identified across MOST structures found in the Protein Data Bank.

Arrange the following in order of increasing complexity: secondary structure,tertiary structure,motif,and domain.

Using the table below,determine the kind of gene mutation illustrated.ATG_AAT_CAC ATG_AAG_CAC

Which stabilizing force in protein tertiary structures is a covalent bonding force?

What are the three-letter and one-letter abbreviations for the amino acid tyrosine?

The essential amino acids in adult humans are those that are required in our diet because of a lack of the biosynthetic pathway in our cells.The single-letter abbreviations for these amino acids are WVMILKFHT.Name these amino acids.

The and Angles are the

Draw the resonance structures that stabilize the peptide bonds found in proteins.

What is believed to be the underlying cause of prion protein plaque formation?