3'-nucleotidase activity in procyclic and bloodstream stages of Trypanosoma rhodesiense.
3'-nucleotidase activity in procyclic and bloodstream stages of Trypanosoma rhodesiense.
复制标题
罗得西亚锥虫前循环阶段和血流阶段的 3-核苷酸酶活性。
DOI:
10.1016/0305-0491(86)90332-9
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发表时间:
1986
期刊:
影响因子:
--
通讯作者:
Dwyer,DM
中科院分区:
文献类型:
--
作者:
Gottlieb,M;Gardiner,PR;Dwyer,DM
Both procyclic and bloodstream-derived trypanosomes of Trypanosoma rhodesiense exhibit a nucleotidase activity which is capable of hydrolyzing 3'-ribonucleotides. Nucleotidase activity in assays employing 5'-nucleotide substrates is not detectable in preparations of either phenotype. The 3'-nucleotidase activity in lysates of procyclic trypanosomes is pelletable at 100,000 g, whereas that activity from bloodstream forms is operationally soluble under the conditions employed. The 3'-nucleotidase activities of both stages share the following characteristics: pH optimum of 8.5, substrate preference for purine ribonucleotides, resistance to commonly used phosphatase inhibitors, including fluoride, tartrate and molybdate ions. Both activities are reversibly inhibited by EDTA and reactivated by Co2+ ions. As visualized by fine-structure cytochemical methods, 3'-nucleotidase activity was distributed over the entire surface of procyclic trypanosomes, but not bloodstream parasites bearing an intact surface coat.
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DOI:
10.1016/0005-2736(82)90351-0
发表时间:
1982
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Patricia E. Mancini;James E. Strickler;Curtis L. Patton
通讯作者:
Curtis L. Patton
影响因子:
3.9
作者:
J. Rodden;J. J. Scocca
通讯作者:
J. J. Scocca
DOI:
10.1016/0305-0491(82)90510-7
发表时间:
1982
期刊:
Comparative biochemistry and physiology. B, Comparative biochemistry
影响因子:
--
作者:
R. Glew;M. Czuczman;W. Diven;R. L. Berens;M. Pope;D. Katsoulis
通讯作者:
D. Katsoulis
影响因子:
4.4
作者:
J. McLaughlin
通讯作者:
J. McLaughlin
DOI:
10.1042/bj1800011
发表时间:
1979
期刊:
The Biochemical journal
影响因子:
--
作者:
H. Voorheis;J. Gale;M. Owen;W. Edwards
通讯作者:
W. Edwards