Snazzy Snippets
This secondary structure forms more readily than other possible conformation in a protein
What is an alpha-helix?
The number of covalent bonds separating alpha-carbons in an alpha-helix
What is 3?
These bonds form between adjacent segments of the Beta-sheet
What are hydrogen bonds?
The usual configuration peptide bonds are found in
What is a trans configuration?
T or F: Some proteins have segments that are intrinsically disordered
True
These two forces hold coiled-coils together
What are London forces and the hydrophobic effect?
This amino acid shows the greatest tendency towards forming alpha-helices
What is alanine?
Beta-turns in a protein are found here
The C-N peptide bond does not have free-rotation because of this
What is a partial double bond characteristic?
Tetrahedral geometry
Proline and Glycine are more likely to occur in this secondary structure conformation:
What is a Beta-sheet?
Amino acids that aren't conducive to the formation of a stable alpha-helix are known as this
What is a helix-breaker?
Hydrogen bonds are stronger in this type of Beta-sheet
This covalent peptide bond is important in a protein's secondary structure
What are disulfide bonds?
What are proteins with B-barrels involved in
Cell and organelle membranes
This renowned researcher, is notorious for writing difficult to understand questions.
Who is Dr. Zia Shariat-Madar?
The usual number of residues between interacting R groups within a helix
What are 3-4 residues?
These two groups hold together beta sheets
What are amide and carbonyl groups?
This type of plot is used to analyze the 3D structure of proteins
What is a Ramachandran plot?
Independently folding regions in a protein are called
Domains
These 5 constraints affect the stability of an alpha helix:
What are:
-Intrinsic propensity of an amino acid residue to form an alpha helix
-Interactions between R groups; particularly those 3-4 residues apart
-Bulkiness of adjacent R groups
-Occurrence of Proline and Glycine residues
-Interactions between amino acid residues at the end of the helical segment
This helix-breaker has a high conformational flexibility and because of this can adopt a coil structure that is different than an alpha-helix
What is Glycine?
In 2017, protests and a puppy were among this Russian leader's 65th birthday gifts.
Who is Vladimir Putin?
You've got to hand it to this tropical tree
What is a palm?
Fibrous proteins are _____ soluble
Water