Synthesis and Properties of Gramicidin S Analogs Containing Pro–D-Phe Sequence in Place of D-Phe–Pro Sequence in the β-Turn Part of the Antibiotic
作者:Makoto Tamaki、Michiaki Takimoto、Ichiro Muramatsu
DOI:10.1246/bcsj.58.1469
日期:1985.5
that of gramicidin S, and its activity toward other microorganisms tested was 1/2 that of gramicidin S. The CD spectra of these analogs and gramicidin S in an aqueous solution differ from each other, indicating that these peptides have different conformations in aqueous solutions. The CD spectrum of [L-Pro4, D-Phe5]-gramicidin S resembles a graphical average of the CD spectra of gramicidin S and [L-Pro4
合成了两种短杆菌肽 S 类似物 [L-Pro4, D-Phe5]-短杆菌肽 S 和 [L-Pro4,4', D-Phe5,5']-短杆菌肽 S,以研究 Pro 位置之间的关系残留物、抗生素活性和 CD 谱。[L-Pro4,4', D-Phe5,5']-短杆菌肽 S 几乎没有活性。另一方面,[L-Pro4, D-Phe5]-短杆菌肽S对枯草杆菌和黄微球菌的活性与短杆菌肽S相同,对其他微生物的活性是短杆菌肽S的1/2这些类似物和短杆菌肽S在水溶液中的CD谱互不相同,说明这些肽在水溶液中具有不同的构象。[L-Pro4, D-Phe5]-短杆菌肽 S 的 CD 光谱类似于短杆菌肽 S 和 [L-Pro4,4', D-Phe5,5']-短杆菌肽 S 的 CD 光谱的图形平均值。