Structural basis for autoregulation of the zinc transporter YiiP.
Structural basis for autoregulation of the zinc transporter YiiP.
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锌转运蛋白YIIP自动调节的结构基础。
DOI:
10.1038/nsmb.1662
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发表时间:
2009-10
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
作者:
Zinc transporters play critical roles in cellular zinc homeostatic control. The 2.9-Å resolution structure of the zinc transporter YiiP from Escherichia coli reveals a richly charged dimer-interface stabilized by zinc binding. Site-directed fluorescent resonance energy transfer (FRET) measurements and mutation-activity analysis suggest that zinc binding triggers hinge movements of two electrically repulsive cytoplasmic domains pivoting around four salt-bridges situated at the juncture of the cytoplasmic and transmembrane domains. These highly conserved salt-bridges interlock transmembrane helices at the dimer-interface, well positioned to transmit zinc-induced inter-domain movements to reorient transmembrane helices, thereby modulating coordination geometry of the active-site for zinc transport. The cytoplasmic domain of YiiP is a structural mimic of metal trafficking proteins and the metal-binding domains of metal-transporting P-type ATPases. The use of this common structural module to regulate metal coordination chemistry may enable a tunable transport activity in response to cytoplasmic metal fluctuations.
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影响因子:
7
作者:
Arnesano, F;Banci, L;O'Halloran, TV
通讯作者:
O'Halloran, TV
DOI:
10.1073/pnas.0711446105
发表时间:
2008-04-22
影响因子:
11.1
作者:
Gonzalez-Guerrero, Manuel;Argueello, Jose M.
通讯作者:
Argueello, Jose M.
DOI:
10.1073/pnas.95.12.7220
发表时间:
1998-06-09
影响因子:
11.1
作者:
Grotz, N;Fox, T;Eide, D
通讯作者:
Eide, D
影响因子:
56.9
作者:
Eshaghi, Said;Niegowski, Damian;Nordlund, Par
通讯作者:
Nordlund, Par
DOI:
10.1107/s0907444994003112
发表时间:
1994-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
BAILEY, S
通讯作者:
BAILEY, S