Structural characterization of encapsulated ferritin provides insight into iron storage in bacterial nanocompartments
Structural characterization of encapsulated ferritin provides insight into iron storage in bacterial nanocompartments
复制标题
封装铁蛋白的结构表征有助于深入了解细菌纳米室中的铁储存
DOI:
10.1101/063495
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
He D
中科院分区:
文献类型:
--
作者:
He D
Ferritins are ubiquitous proteins that oxidise and store iron within a protein shell to protect cells from oxidative damage. We have characterized the structure and function of a new member of the ferritin superfamily that is sequestered within an encapsulin capsid. We show that this encapsulated ferritin (EncFtn) has two main alpha helices, which assemble in a metal dependent manner to form a ferroxidase center at a dimer interface. EncFtn adopts an open decameric structure that is topologically distinct from other ferritins. While EncFtn acts as a ferroxidase, it cannot mineralize iron. Conversely, the encapsulin shell associates with iron, but is not enzymatically active, and we demonstrate that EncFtn must be housed within the encapsulin for iron storage. This encapsulin nanocompartment is widely distributed in bacteria and archaea and represents a distinct class of iron storage system, where the oxidation and mineralization of iron are distributed between two proteins.DOI:http://dx.doi.org/10.7554/eLife.18972.001
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影响因子:
3
作者:
Chasteen, ND;Harrison, PM
通讯作者:
Harrison, PM
影响因子:
10.7
作者:
Katoh K;Standley DM
通讯作者:
Standley DM
影响因子:
10.7
作者:
Kumar, Sudhir;Stecher, Glen;Tamura, Koichiro
通讯作者:
Tamura, Koichiro
DOI:
10.1097/iae.0000000000001602
发表时间:
2017
期刊:
Retina (Philadelphia, Pa.)
影响因子:
--
作者:
Todorich,Bozho;Thanos,Aristomenis;Yonekawa,Yoshihiro;Thomas,BenjaminJ;Faia,LisaJ;Chang,Emmanuel;Shulman,Julia;Olsen,KarlR;Blair,MichaelP;Shapiro,MichaelP;Ferrone,Philip;Vajzovic,Lejla;Toth,CynthiaA;Lee,ThomasC;Robinson,
通讯作者:
Robinson,
影响因子:
3
作者:
Bonomi, F;Kurtz, DM;Cui, XY
通讯作者:
Cui, XY