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. 2018 May 17;13(5):e0197241. doi: 10.1371/journal.pone.0197241

Fig 6. Model of the CBAP ring flip in CBAP-acylated BlaRS.

Fig 6

(A) The degrees of rotational freedom of the CBAP biphenyl substituent. Green sticks correspond to the bound conformation of CBAP in the x-ray crystal structure, PDB 3Q7Z. Yellow and blue sticks correspond to racemization of the biphenyl and rotation of the entire biphenyl unit, respectively. (B) Proposed rotation of the CBAP biphenyl demonstrates a steric clash–indicated with an asterisk–with the β5/β6 hairpin that would necessitate a conformational change.