) () 18 of 53 eriodic Table help to ids that Part A Hydrophobic interactions Che
ID: 1030726 • Letter: #
Question
) () 18 of 53 eriodic Table help to ids that Part A Hydrophobic interactions Check all that apply. D They can also stabilize quatormary structure by bringing togethertwo polypeptide chains They can stabilize the tertiary structure of a protein by connecting two distant parts of a polypeptide chain or by pulling the protein backbone together in the middle of the chain Occur between negatively charged and positively charged amino acid side chain groups. Alanine and isoleucine take part in hydrophobic interactions. Lysine and aspartate take part in hydrophobic interactions. Occur between hydrocarbon side chains of amino acids. In a protein, these side chains cluster in the center of the molecule to exclude water, and are responsible for the nearly spherical tertiary shape of globular proteins. Previous Answers Request Answer Submit X Incorrect; Try Again; 26 attempts remainingExplanation / Answer
Salt bridge (Ionic interaction) is interaction of two charged species. This includes hydrogen bonding and ionic bonding.
1. wrong. Hydrocarbon side chain are neutral and will not participate in ionic interaction.
2. wrong. Alanine and Isoleucine are amino acid with hydrophobic side chain, which are neutral (this is same as statement 1, with specific example alanine and isoleucine)
3. Right. Quaternary structure are stabilised by Ionic bonds, hydrogen bonds, van der Waals interaction etc. So, ionic interaction also contributes to the stability of quaternary structure.
4. Right. Ionic interaction occur between +vely and -vely charged side chain groups.
5. Right Lysine and aspartate charged side chain and therefore can form salt bridge.
6. Right. Salt bridge does stabilise tertiary structure.
7. wrong. as salt bridge involves charged species they does not exclude water.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.