- The side chains of nonpolar amino acids are best categorized as:
- In an aqueous solution, protein conformation is determined by two major factors. One is the formation of the maximum number of hydrogen bonds. The other is the:
- Protein subunits in a multisubunit protein are held to each other primarily by
- The average molecular weight of the 20 standard amino acids is 138, but biochemists use 110 when estimating the number of amino acids in a protein of known molecular weight. Why?
- The concentration of hydrogen ion (H+) in a solution is measured using which scale?
- An α-helix can be represented in various ways by molecular visualisation computer software. Consider the following molecular representations of the -helix where the 'side view' of the helix shows the N-terminal at the bottom and the C-terminal at the top. The 'top view' of the helix shows the C-terminal end of the helix. Then answer the questions. Please note that more than one of the given alternatives may be correct. Choosing an incorrect answer will result in a mark deducted from the correct choices.
- the information required for the correct folding of a protein is contained in the specific sequence amino acids along the polypeptide chain
- The principle forces holding subunits of an oligomeric protein to each other are ________
- All amino acids can readily interconvert between the cis and trans forms by rotation about the peptide bond.
- Which represents the backbone atoms of a protein? Note: R = amino acid side chain; N = nitrogen; Cα = alpha carbon; C = carbonyl carbon
- In oligomeric proteins all the subunits are always identical
- A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of
- Where is carbamolyphosphate synthetase I (CPS I) most commonly found and CPS II?
- The subunits of a multisubunit proteins are always identical
- The peptide bond is which of the following?
- what happens to the helix shape when a protein molecule is changed
- What is the formula for the strong base lithium hydroxide?
- What is the formula for the strong base potassium hydroxide?
- What is the formula for the strong acid nitric acid?
- What is the formula for the strong acid sulfuric acid?