Structural basis for the specialization of Nur, a nickel-specific Fur homolog, in metal sensing and DNA recognition.
Structural basis for the specialization of Nur, a nickel-specific Fur homolog, in metal sensing and DNA recognition.
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在金属传感和DNA识别中,NUR(镍特异性的皮毛同源物)NUR专业化的结构基础。
DOI:
10.1093/nar/gkp198
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发表时间:
2009-06
影响因子:
14.9
通讯作者:
Cha SS
中科院分区:
文献类型:
--
作者:
An YJ;Ahn BE;Han AR;Kim HM;Chung KM;Shin JH;Cho YB;Roe JH;Cha SS
Nur, a member of the Fur family, is a nickel-responsive transcription factor that controls nickel homeostasis and anti-oxidative response in Streptomyces coelicolor. Here we report the 2.4-Å resolution crystal structure of Nur. It contains a unique nickel-specific metal site in addition to a nonspecific common metal site. The identification of the 6-5-6 motif of the Nur recognition box and a Nur/DNA complex model reveals that Nur mainly interacts with terminal bases of the palindrome on complex formation. This contrasts with more distributed contacts between Fur and the n-1-n type of the Fur-binding motif. The disparity between Nur and Fur in the conformation of the S1-S2 sheet in the DNA-binding domain can explain their different DNA-recognition patterns. Furthermore, the fact that the specificity of Nur in metal sensing and DNA recognition is conferred by the specific metal site suggests that its introduction drives the evolution of Nur orthologs in the Fur family.
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影响因子:
14.9
作者:
Chen Z;Lewis KA;Shultzaberger RK;Lyakhov IG;Zheng M;Doan B;Storz G;Schneider TD
通讯作者:
Schneider TD
影响因子:
3.2
作者:
Rodionov, DA;Hebbeln, P;Eitinger, T
通讯作者:
Eitinger, T
影响因子:
3.6
作者:
Kim, EJ;Chung, HJ;Roe, JH
通讯作者:
Roe, JH
影响因子:
2.8
作者:
Díaz-Mireles, E;Wexler, M;Johnston, AWB
通讯作者:
Johnston, AWB
影响因子:
3.2
作者:
Fuangthong, M;Helmann, JD
通讯作者:
Helmann, JD