5'-deoxy-5'-({(2S)-2-({2-[(N-{(2R)-4-[(dioxo-lambda~5~-phosphanyl)oxy]-2-hydroxy-3,3-dimethylbutanoyl}-beta-alanyl)amino]ethyl}sulfanyl)-2-[(2S)-pyrrolidin-2-yl]ethanesulfonyl}amino)adenosine

Q4KCY5 — L-proline-- ligase