Calcium Binding Proteins All Possess Two or More Characteristic Peptide

question 4

Multiple Choice

Calcium binding proteins all possess two or more characteristic peptide domains for Ca⁺⁺ binding that consist of a short α-helix, a loop of 12 amino acids and a second α-helix (helix-loop-helix) that is called:

• A) basic region leucine zipper.
• B) zinc finger.
• C) EF hand.
• D) beta-beta.
• E) none are true.