transmembrane portion of an alpha helix?
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Which amino acids are most likely found in the transmembrane portion of an alpha helix?
a. Lysine
b. Phenylalanine
c. Aspartate
d. Glutamate
e. All of them
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- Why mutation would have a greater effect on the stability of a protein. a. Threonine to Valine b. Valine to Glutamic aciddo a and e please and For e, choose two types of interactions, and then give an example of the amino acids in this polypeptide that would interact together in that way."Loops of polypeptide that protrude from the surface of a protein often form the binding sites for other molecules" is true or false.
- The attachment of an amino acid to a tRNA is calledHow would the substituted amino acid (Cysteine) interact differently with the neighboring amino acid then the wild type (Tyrosine) Hint: consider the properties of Cysteine and each amino acid it interacts with.Which of the following amino acid is acetylated when DNA is unwound from histones? a. Asparagine b. Lysine c. Arginine d. Glycine
- The addition of amino acids to a growing polypeptide Proteins known as _______?which statement about genetic code is not true? A) mRNA is read 3 bases at a time, which are called codons. B) There is one initiator codon that codes for an amino acid. C) Each amino acid is coded for by only one codon. D) There are 3 termination codons that do not code for amino acids. E) Each codon is specific for only one amino acid. An anion has an equilibrium potential of -40 mV. What direction are the chemical and electrical forces acting on the anion at the resting membrane potential (-70 mV)? A) Both the chemical and electrical forces are directed out of the cell. B) The chemical force is directed out of the cell and the electrical force is directed into the cell. C) The chemical force is directed into the cell and the electrical force is directed out of the cell. D) There is insufficient information to answer this question. E) Both the chemical and electrical forces are directed into the cell.Which of the following amino acid types is mostly likely to be hydroxylated in a posttranslation modification on a protein (example: collagen)? a.) glycine b.) serine c.) glutamate d.) tyrosine e.) proline
- Polypeptide folding is often mediated by other proteins called chaperones. Describe how a mutant chaperone protein might be responsible for a genetic disorder involving an enzyme.A tRNA ___ (_ nucleotides) binds to a specific mRNA ____ (_ nucleotides), complementary in sequence; A pairs with __, G pairs with __. Flexible pairing at the third base of a codon is called ___ and allows some tRNAs to bind to more than one codon.Which of the amino acids does NOT have an aliphatic side chain? a. Lysine b. Alanine c. Leucine d. Isoleucine e. Valine
