A single sensor controls large variations in zinc quotas in a marine cyanobacterium.
A single sensor controls large variations in zinc quotas in a marine cyanobacterium.
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DOI:
10.1038/s41589-022-01051-1
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发表时间:
2022-08
影响因子:
14.8
通讯作者:
Blindauer CA
中科院分区:
文献类型:
--
作者:
Mikhaylina A;Ksibe AZ;Wilkinson RC;Smith D;Marks E;Coverdale JPC;Fülöp V;Scanlan DJ;Blindauer CA
Marine cyanobacteria are critical players in global nutrient cycles that crucially depend on trace metals in metalloenzymes, including zinc for CO2 fixation and phosphorus acquisition. How strains proliferating in the vast oligotrophic ocean gyres thrive at ultra-low zinc concentrations is currently unknown. Using Synechococcus sp. WH8102 as a model we show that its zinc-sensor protein Zur differs from all other known bacterial Zur proteins in overall structure and the location of its sensory zinc site. Uniquely, Synechococcus Zur activates metallothionein gene expression, which supports cellular zinc quotas spanning two orders of magnitude. Thus, a single zinc sensor facilitates growth across pico- to micromolar zinc concentrations with the bonus of banking this precious resource. The resultant ability to grow well at both ultra-low and excess zinc, together with overall lower zinc requirements, likely contribute to the broad ecological distribution of Synechococcus across the global oceans. The zinc-sensor protein Zur in a marine cyanobacterium is distinct from those in other bacteria in structure and location of its sensory zinc site, and facilitates growth across a range of zinc concentrations via activation of a metallothionein gene.
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影响因子:
5.2
作者:
Barnett JP;Millard A;Ksibe AZ;Scanlan DJ;Schmid R;Blindauer CA
通讯作者:
Blindauer CA
DOI:
10.1093/bioinformatics/btr064
发表时间:
2011-04-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Grant CE;Bailey TL;Noble WS
通讯作者:
Noble WS
影响因子:
4.4
作者:
Brahamsha, B
通讯作者:
Brahamsha, B
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
2.9
作者:
JEFFERSON, JR;HUNT, JB;GINSBURG, A
通讯作者:
GINSBURG, A