Crystal structure of a PCP/Sfp complex reveals the structural basis for carrier protein posttranslational modification.

Crystal structure of a PCP/Sfp complex reveals the structural basis for carrier protein posttranslational modification.
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PCP/Sfp复合物的晶体结构揭示了载体蛋白翻译后修饰的结构基础

DOI:
10.1016/j.chembiol.2014.02.014
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发表时间:
2014
影响因子:
--
通讯作者:
Dötsch
Dötsch
中科院分区:
生物1区
文献类型:
--
作者:
Rahighi;Kirchner;Henrich;Köpke;Güntert;Marahiel;Dötsch

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Phosphopantetheine transferases represent a class of enzymes found throughout all forms of life. From a structural point of view, they are subdivided into three groups, with transferases from group II being the most widespread. They are required for the posttranslational modification of carrier proteins involved in diverse metabolic pathways. We determined the crystal structure of the group II phosphopantetheine transferase Sfp fromBacillusin complex with a substrate carrier protein in the presence of coenzyme A and magnesium, and observed two protein-protein interaction sites. Mutational analysis showed that only the hydrophobic contacts between the carrier protein's second helix and the C-terminal domain of Sfp are essential for their productive interaction. Comparison with a similar structure of a complex of human proteins suggests that the mode of interaction is highly conserved in all domains of life.
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