Crystallization and preliminary X-ray analysis of the type IV restriction endonuclease ScoMcrA from Streptomyces coelicolor, which cleaves both Dcm-methylated DNA and phosphorothioated DNA.
Crystallization and preliminary X-ray analysis of the type IV restriction endonuclease ScoMcrA from Streptomyces coelicolor, which cleaves both Dcm-methylated DNA and phosphorothioated DNA.
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天蓝色链霉菌 IV 型限制性内切核酸酶 ScoMcrA 的结晶和初步 X 射线分析,该酶可切割 Dcm 甲基化 DNA 和硫代磷酸化 DNA。
DOI:
10.1107/s2053230x14025801
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Xinyi He
中科院分区:
文献类型:
--
作者:
Gong Zhao;Zixin Deng;Geng Wu;Xinyi He
ScoMcrA is a type IV modification-dependent restriction endonuclease found in the model strain Streptomyces coelicolor. Unlike type I, II and III restriction endonucleases, which cleave unmodified DNA, type IV restriction endonucleases cleave modified DNA, including methylated, hydroxymethylated, glucosyl-hydroxymethylated and phosphorothioated DNA. ScoMcrA targets both Dcm-methylated DNA and phosphorothioated DNA, and makes double-strand breaks 16-28 nt away from the modified nucleotides or the phosphorothioate links. However, the mechanism by which ScoMcrA recognizes these two entirely different types of modification remains unclear. In this study, the ScoMcrA protein was overexpressed, purified and crystallized. The crystals diffracted to 3.35 Å resolution and belonged to space group P2(1)2(1)2(1). The unit-cell parameters were determined to be a=130.19, b=139.36, c=281.01 Å, α=β=γ=90°. These results will facilitate the detailed structural analysis of ScoMcrA and further elucidation of its biochemical mechanism.
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影响因子:
14.8
作者:
Wang, Lianrong;Chen, Shi;Dedon, Peter C.
通讯作者:
Dedon, Peter C.
影响因子:
14.9
作者:
Xie X;Liang J;Pu T;Xu F;Yao F;Yang Y;Zhao YL;You D;Zhou X;Deng Z;Wang Z
通讯作者:
Wang Z
影响因子:
3.6
作者:
Cao B;Cheng Q;Gu C;Yao F;DeMott MS;Zheng X;Deng Z;Dedon PC;You D
通讯作者:
You D
影响因子:
3.6
作者:
He, Xinyi;Ou, Hong-Yu;Deng, Zixin
通讯作者:
Deng, Zixin
DOI:
10.1016/j.str.2006.09.005
发表时间:
2006-11
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Walter TS;Meier C;Assenberg R;Au KF;Ren J;Verma A;Nettleship JE;Owens RJ;Stuart DI;Grimes JM
通讯作者:
Grimes JM