An A-Minor Motif Is Characterized by Which of the Following

Multiple Choice

An A-minor motif is characterized by which of the following folding patterns?

A) Hydrogen bonding occurs between the 2 '-OH of a ribose in one helix and the 2-oxygen ofa pyrimidine base of the other helix between their respective minor groove surfaces.
B) Single-stranded adenosines make tertiary contacts with the minor grooves of RNA doublehelices by hydrogen bonding and van der Waals contact.
C) An asymmetric internal loop embedded in RNA double helices has a sharp bend in thephosphodiester backbone of the three-nucleotide bulge associated with this structure.
D) Base-stacking interactions promote and stabilize the stem-loop structure.