Control of transposase activity within a transpososome by the configuration of the flanking DNA segment of the transposon.
Control of transposase activity within a transpososome by the configuration of the flanking DNA segment of the transposon.
复制标题
通过转座子侧翼 DNA 片段的配置来控制转座体内的转座酶活性。
DOI:
10.1073/pnas.0706556104
复制
发表时间:
2007
影响因子:
11.1
通讯作者:
Mizuuchi,Kiyoshi
中科院分区:
文献类型:
--
作者:
Mizuuchi,Michiyo;Rice,PhoebeA;Wardle,SimonJ;Haniford,DavidB;Mizuuchi,Kiyoshi
The multiple steps of DNA transposition take place within a large complex called the transpososome, in which a pair of transposon DNA ends are synapsed by a multimer of the transposase protein. The final step, a DNA strand transfer reaction that joins the transposon ends to the target DNA strands, entails no net change in the number of high-energy chemical bonds. Physiology demands that, despite remaining stably associated with the transpososome, the strand transfer products undergo neither the reverse reaction nor any further cleavage reactions. Accordingly, when the Mu or Tn10 strand transfer complex was producedin vitrothrough transposase-catalyzed reaction steps, reverse reactions were undetectable. In contrast, when the Mu or Tn10 strand transfer complexes were assembled from DNA already having the structure of the strand transfer product, we detected a reaction that resembled reversal of target DNA strand transfer. The stereoselectivity of phosphorothioate-containing substrates indicated that this reaction proceeds as the pseudoreversal of the normal target DNA strand transfer step. Comparison of the reactivity of closely related Mu substrate DNA structures indicated that the configuration of the flanking DNA outside of the transposon sequence plays a key role in preventing the transposon end cleavage reaction after the strand transfer step.
登录
查看更多内容
DOI:
10.1176/ps.28.4.241
发表时间:
1977
期刊:
Hospital & community psychiatry
影响因子:
--
作者:
A. Mclellan;K. A. Druley
通讯作者:
K. A. Druley
DOI:
--
发表时间:
1971
期刊:
British Journal of Addiction
影响因子:
--
作者:
D. Babst;C. Chambers;A. Warner
通讯作者:
A. Warner
影响因子:
--
作者:
Rounsaville,BJ;Kosten,TR;Weissman,MM;Kleber,HD
通讯作者:
Kleber,HD
影响因子:
17.7
作者:
A. Mclellan;J. Ball;L. Rosen;C. O'brien
通讯作者:
C. O'brien
影响因子:
--
作者:
T. Kosten;B. Rounsaville;H. Kleber
通讯作者:
T. Kosten;B. Rounsaville;H. Kleber