Details

Autor(en) / Beteiligte

• Yang, Zhenzhen
• Zhang, Lilan
• Yu, Xuejing
• Wu, Shan
• Yang, Yong
• Hu, Yumei
• Li, Qian
• Shang, Na
• Guo, Rey-Ting
• Chen, Chun-Chi
• Dai, Longhai
• Liu, Weidong

Titel

Crystal structure of TchmY from Actinoplanes teichomyceticus

Ist Teil von

• Acta crystallographica. Section F, Structural biology communications, 2019-09, Vol.75 (9), p.570-575

Ort / Verlag

5 Abbey Square, Chester, Cheshire CH1 2HU, England: International Union of Crystallography

Erscheinungsjahr

2019

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• Moenomycin‐type antibiotics are phosphoglycolipids that are notable for their unique modes of action and have proven to be useful in animal nutrition. The gene clusters tchm from Actinoplanes teichomyceticus and moe from Streptomyces are among a limited number of known moenomycin‐biosynthetic pathways. Most genes in tchm have counterparts in the moe cluster, except for tchmy and tchmz, the functions of which remain unknown. Sequence analysis indicates that TchmY belongs to the isoprenoid enzyme C2‐like superfamily and may serve as a prenylcyclase. The enzyme was proposed to be involved in terminal cyclization of the moenocinyl chain in teichomycin, leading to the diumycinol chain of moenomycin isomers. Here, recombinant TchmY protein was expressed in Escherichia coli and its crystal structure was solved by SIRAS. Structural analysis and comparison with other prenylcyclases were performed. The overall fold of TchmY consists of an (α/α)6‐barrel, and a potential substrate‐binding pocket is found in the central chamber. These results should provide important information regarding the biosynthetic basis of moenomycin antibiotics. The structural analysis of a putative prenylcyclase enzyme, TchmY, from Actinoplanes teichomyceticus is reported.