Grupo de Espectrocopía Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia, Unidad Asociada CSIC, Parque Científico UVa, Universidad de Valladolid, 47011 Valladolid, Spain.
J Phys Chem Lett. 2024 Feb 22;15(7):1908-1913. doi: 10.1021/acs.jpclett.3c03301. Epub 2024 Feb 12.
6-Aminopenicillanic acid is a penicillanic acid compound and is the active nucleus common to all penicillins. Using laser ablation techniques, we transformed the solid into the gas phase and characterized its conformational panorama by combining supersonic expansions and Fourier transform microwave techniques. Five conformers were determined, adopting different spatial configurations. Among them, the axial and equatorial forms, which are biologically relevant, have been observed. The structural similarity to d-Ala-d-Ala and the detection of both axial and equatorial forms could explain its potential as a penicillin core and its capability as an antibiotic.
6-氨基青霉烷酸是一种青霉烷酸化合物，是所有青霉素共有的活性核。我们使用激光烧蚀技术将固体转化为气相，并通过结合超声速膨胀和傅里叶变换微波技术来描述其构象全景。确定了五个构象体，采用不同的空间构型。其中，观察到了生物相关的轴向和赤道形式。与 d-Ala-d-Ala 的结构相似性以及轴向和赤道形式的检测都可以解释其作为青霉素核心的潜力及其作为抗生素的能力。
