The preparation of tritiated tunicamycin.
The preparation of tritiated tunicamycin.
复制标题
氚化衣霉素的制备。
DOI:
10.1016/0003-2697(86)90330-1
复制
发表时间:
1986
影响因子:
2.9
通讯作者:
Keenan,RW
中科院分区:
文献类型:
--
作者:
Hunnicutt,RE;Keenan,RW
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.
登录
查看更多内容
影响因子:
3.9
作者:
S. Kuo;O. Lampen
通讯作者:
O. Lampen
影响因子:
3.9
作者:
A. Elbein;J. Gafford;M. Kang
通讯作者:
M. Kang
影响因子:
2.9
作者:
Keenan,RW;Hamill,RL;Occolowitz,JL;Elbein,AD
通讯作者:
Elbein,AD
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
影响因子:
15
作者:
J. A. Rabi;J. Fox
通讯作者:
J. Fox