Conversion of<sup>17</sup>O/<sup>18</sup>O-labelled δ-(<scp>L</scp>-α-aminoadipyl)–<scp>L</scp>-cycteinyl–<scp>D</scp>-valine into<sup>17</sup>O/<sup>18</sup>O-labelled isopenicillin N in a cell-free extract of C. acremonium
作者:Robert M. Adlington、Robin T. Aplin、Jack E. Baldwin、Leslie D. Field、Eeva-M. M. John、Edward P. Abraham、Robert L. White
DOI:10.1039/c39820000137
日期:——
δ-(L-α-Amino[1,1,6-17O/18O]-adipyl)-L-cysteiny-D-valine was converted into isopenicillin N in cell-free extracts of Cephalosporium acremonium with no loss of 17O/18O label as shown by 17O n.m.r. spectroscopy and mass spectrometry; incubation of unlabelled tripeptide in cell-free system containing 17O/18O-enriched water produced isopenicillin N with no incorporation of 17O/18O.
δ-(L-δ-氨基[1,1,6-17O/18O]-己二基)-L-半胱氨酸-D-缬氨酸在无细胞头孢菌素提取物中转化为异青霉素 N,17O n. 显示 17O/18O 标记没有损失。m.r. 光谱法和质谱法;在含有 17O/18O 富集水的无细胞系统中培养未标记的三肽,产生异青霉素 N,但没有 17O/18O 的掺入。