02-16-2011, 07:27 PM
A protein believed to play a role in signal transduction and the cellular response to TSH is studied. Special attention is paid to a region of this protein that contains several alpha-helical regions each composed of approximately 20 amino acid residues--consisting primarily of valine, alanine, and isoleucine. Which of the following functions does this particular region most likely perform?
a. Phosphorylating tyrosine residues
b. Binding to intranuclear DNA
c. Spanning the cellular membrane
d. Interacting with signaling substances
e. Interacting with metal ions in transporting proteins
a. Phosphorylating tyrosine residues
b. Binding to intranuclear DNA
c. Spanning the cellular membrane
d. Interacting with signaling substances
e. Interacting with metal ions in transporting proteins