The preparation of tritiated tunicamycin.

The preparation of tritiated tunicamycin.
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氚化衣霉素的制备。

DOI:
10.1016/0003-2697(86)90330-1
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发表时间:
1986
影响因子:
2.9
通讯作者:
Keenan,RW
Keenan,RW
中科院分区:
生物学4区
文献类型:
--
作者:
Hunnicutt,RE;Keenan,RW

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一个相对简单和廉价的程序被设计用于放射性标记的糖蛋白生物合成抑制剂,衣霉素。该过程是基于氢交换在碱性溶液中的氚化水。注意到抗生素比模型化合物如尿苷更易受碱的影响。研究了抑制剂的碱稳定性,以确定最佳标记和产率的条件。还研究了碱性孵育对抗生素的抑制特性的影响,发现分解产物不是将N-乙酰葡糖胺-1-磷酸转移至长链酚磷酸的反应的有效抑制剂。然而,分离的放射性衣霉素同系物保留了所有的抑制作用。在氘化水存在下孵育衣霉素和质谱分析表明,在用于氚化衣霉素的条件下,主要产物交换了6个氢原子。未确定标记衣霉素中氚原子的位置。这些化合物中的放射性标记在生理条件下显示出稳定性,并且对于涉及这些抗生素的作用的调查应该是有用的。
A relatively simple and inexpensive procedure was devised for the radiolabeling of the glycoprotein biosynthesis inhibitor, tunicamycin. The procedure is based on hydrogen exchange in alkaline solutions of tritiated water. It was noted that the antibiotic was much more alkali labile than model compounds such as uridine. The alkali stability of the inhibitor was studied to determine conditions for optimum labeling and yield. The effects of alkaline incubation on the inhibitory properties of the antibiotic were also investigated and it was found that the breakdown products are not effective inhibitors of the reaction that transfers N-acetylglucosamine-1-phosphate to dolichyl phosphate. The isolated radioactive tunicamycin homologs, however, retained all their inhibitory action. Incubation of tunicamycin in the presence of deuterated water and mass spectral analysis showed that under the conditions used for the tritiation of tunicamycin the major product exchanged six hydrogen atoms. The position of the tritium atoms in labeled tunicamycin was not determined. The radioactive label in these compounds was shown to be stable under physiological conditions and should be useful for investigations involving the action of these antibiotics.
衣霉素抑制 (3H) 葡萄糖胺掺入酵母糖蛋白:衣霉素的结合以及与磷脂的相互作用。
DOI: 10.1016/0003-9861(76)90110-7
发表时间: 1976
影响因子: 3.9
作者:
S. Kuo;O. Lampen
通讯作者: O. Lampen
脂质连接糖合成的抑制:衣霉素、链病毒卢定和抗生素 24010 的比较。
DOI: --
发表时间: 1979
影响因子: 3.9
作者:
A. Elbein;J. Gafford;M. Kang
通讯作者: M. Kang
分离的衣霉素和链病毒卢定组分的生物活性。
DOI: 10.1021/bi00513a039
发表时间: 1981
期刊: Biochemistry
影响因子: 2.9
作者:
Keenan,RW;Hamill,RL;Occolowitz,JL;Elbein,AD
通讯作者: Elbein,AD
衣霉素复合物脂肪酸的结构测定。
DOI: --
发表时间: 1979
期刊:
影响因子: --
作者:
A. Takatsuki;K. Kawamura;Y. Kodama;Tei;G. Tamura
通讯作者: G. Tamura
DOI: --
发表时间: 1973
影响因子: 15
作者:
J. A. Rabi;J. Fox
通讯作者: J. Fox