Using the Ramachandran plot below, identify the secondary structure adopted by an amino acid with phi and psi angles of -90 and -180 degrees, respectively.
A) right-handed$\alpha$ helix
B) left-handed $\alpha$ helix
C) $\beta$ sheet
D) twisted $\beta$ sheets
E) Amino acids will not adopt this conformation

Question

Using the Ramachandran plot below, identify the secondary structure adopted by an amino acid with phi and psi angles of -90 and -180 degrees, respectively. 
A) right-handed$\alpha$ helix 
B) left-handed $\alpha$ helix 
C) $\beta$ sheet 
D) twisted $\beta$ sheets 
E) Amino acids will not adopt this conformation

Quizplus · Accepted Answer

The Answer of Using the Ramachandran plot below, identify the secondary structure adopted by an amino acid with phi and psi angles of -90 and -180 degrees, respectively. 
A) right-handed$\alpha$ helix 
B) left-handed $\alpha$ helix 
C) $\beta$ sheet 
D) twisted $\beta$ sheets 
E) Amino acids will not adopt this conformation

Using the Ramachandran Plot Below, Identify the Secondary Structure Adopted α\alphaα

Using the Ramachandran Plot Below, Identify the Secondary Structure Adopted $\alpha$