Zinc-finger recombinase activities in vitro.
Zinc-finger recombinase activities in vitro.
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DOI:
10.1093/nar/gkr652
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发表时间:
2011-11
影响因子:
14.9
通讯作者:
Stark WM
中科院分区:
文献类型:
--
作者:
Prorocic MM;Wenlong D;Olorunniji FJ;Akopian A;Schloetel JG;Hannigan A;McPherson AL;Stark WM
Zinc-finger recombinases (ZFRs) are chimaeric proteins comprising a serine recombinase catalytic domain linked to a zinc-finger DNA binding domain. ZFRs can be tailored to promote site-specific recombination at diverse ‘Z-sites’, which each comprise a central core sequence flanked by zinc-finger domain-binding motifs. Here, we show that purified ZFRs catalyse efficient high-specificity reciprocal recombination between pairs of Z-sites in vitro. No off-site activity was detected. Under different reaction conditions, ZFRs can catalyse Z-site-specific double-strand DNA cleavage. ZFR recombination activity in Escherichia coli and in vitro is highly dependent on the length of the Z-site core sequence. We show that this length effect is manifested at reaction steps prior to formation of recombinants (binding, synapsis and DNA cleavage). The design of the ZFR protein itself is also a crucial variable affecting activity. A ZFR with a very short (2 amino acids) peptide linkage between the catalytic and zinc-finger domains has high activity in vitro, whereas a ZFR with a very long linker was less recombination-proficient and less sensitive to variations in Z-site length. We discuss the causes of these phenomena, and their implications for practical applications of ZFRs.
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影响因子:
14.9
作者:
Olorunniji FJ;He J;Wenwieser SV;Boocock MR;Stark WM
通讯作者:
Stark WM
DOI:
10.1073/pnas.1533177100
发表时间:
2003-07-22
影响因子:
11.1
作者:
Akopian, A;He, JY;Stark, WM
通讯作者:
Stark, WM
影响因子:
3.7
作者:
Proudfoot C;McPherson AL;Kolb AF;Stark WM
通讯作者:
Stark WM
DOI:
10.1073/pnas.022039799
发表时间:
2002-04-02
影响因子:
11.1
作者:
Santoro, SW;Schultz, PG
通讯作者:
Schultz, PG
影响因子:
3.6
作者:
Burke, ME;Arnold, PH;Stark, WM
通讯作者:
Stark, WM