Kinetoplast maxicircle DNA replication in Crithidia fasciculata and Trypanosoma brucei
Kinetoplast maxicircle DNA replication in Crithidia fasciculata and Trypanosoma brucei
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Crithidia fasciculata 和 Trypanosoma brucei 中动质体上环 DNA 复制
DOI:
--
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发表时间:
1995
影响因子:
5.3
通讯作者:
P. T. Englund
中科院分区:
文献类型:
--
作者:
Laura Rocco Carpenter;P. T. Englund
Kinetoplast DNA, the mitochondrial DNA of trypanosomatids, is composed of several thousand minicircles and a few dozen maxicircles, all of which are topologically interlocked in a giant network. We have studied the replication of maxicircle DNA, using electron microscopy to analyze replication intermediates from both Crithidia fasciculata and Trypanosoma brucei. Replication intermediates were stabilized against branch migration by introducing DNA interstrand cross-links in vivo with 4,5',8-trimethylpsoralen and UV radiation. Electron microscopy of individual maxicircles resulting from a topoisomerase II decatenation of kinetoplast DNA networks revealed intact maxicircle theta structures. Analysis of maxicircle DNA linearized by restriction enzyme cleavage revealed branched replication intermediates derived from theta structures. Measurements of the linearized branched molecules in both parasites indicate that replication initiates in the variable region (a noncoding segment characterized by repetitive sequences) and proceeds unidirectionally, clockwise on the standard map.
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DOI:
10.1016/s0021-9258(18)45555-x
发表时间:
1987-05
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Larry Simpson;N. Neckelmann;V. F. D. L. Cruz;A. M. Simpson;J. Feagin;D. Jasmer;J. E. Stuart
通讯作者:
Larry Simpson;N. Neckelmann;V. F. D. L. Cruz;A. M. Simpson;J. Feagin;D. Jasmer;J. E. Stuart
DOI:
10.1096/fasebj.7.1.8422975
发表时间:
1993
期刊:
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子:
--
作者:
Hajduk,SL;Harris,ME;Pollard,VW
通讯作者:
Pollard,VW
DOI:
10.1146/annurev.cb.07.110191.002321
发表时间:
1991-01-01
期刊:
ANNUAL REVIEW OF CELL BIOLOGY
影响因子:
--
作者:
CLAYTON, DA
通讯作者:
CLAYTON, DA
影响因子:
14.9
作者:
MYLER, PJ;GLICK, D;STUART, KD
通讯作者:
STUART, KD
DOI:
10.1016/s0074-7696(08)62063-x
发表时间:
1992
期刊:
International review of cytology
影响因子:
--
作者:
Stuart,K;Feagin,JE
通讯作者:
Feagin,JE