CdiA from Enterobacter cloacae delivers a toxic ribosomal RNase into target bacteria.
CdiA from Enterobacter cloacae delivers a toxic ribosomal RNase into target bacteria.
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DOI:
10.1016/j.str.2014.02.012
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发表时间:
2014-05-06
期刊:
影响因子:
5.7
通讯作者:
Hayes, Christopher S.
中科院分区:
文献类型:
--
作者:
Beck, Christina M.;Morse, Robert P.;Cunningham, David A.;Iniguez, Angelina;Low, David A.;Goulding, Celia W.;Hayes, Christopher S.
Contact-dependent growth inhibition (CDI) is one mechanism of inter-bacterial competition. CDI+ cells export large CdiA effector proteins, which carry a variety of C-terminal toxin domains (CdiA-CT). CdiA-CT toxins are specifically neutralized by cognate CdiI immunity proteins to protect toxin-producing cells from auto-inhibition. Here, we use structure determination to elucidate the activity of a unique CDI toxin from Enterobacter cloacae (ECL). The structure of CdiA-CTECL resembles the C-terminal nuclease domain of colicin E3, which cleaves 16S ribosomal RNA to disrupt protein synthesis. In accord with this structural homology, we show that CdiA-CTECL uses the same nuclease activity to inhibit bacterial growth. Surprisingly, although colicin E3 and CdiAECL carry equivalent toxin domains, the corresponding immunity proteins are unrelated in sequence, structure and toxin-binding site. Together, these findings reveal unexpected diversity amongst 16S rRNases and suggest that these nucleases are robust and versatile payloads for a variety of toxin-delivery platforms.
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影响因子:
4.5
作者:
Poole SJ;Diner EJ;Aoki SK;Braaten BA;t'Kint de Roodenbeke C;Low DA;Hayes CS
通讯作者:
Hayes CS
影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1073/pnas.1300627110
发表时间:
2013-04-23
影响因子:
11.1
作者:
Koskiniemi, Sanna;Lamoureux, James G.;Hayes, Christopher S.
通讯作者:
Hayes, Christopher S.
影响因子:
10.5
作者:
Diner, Elie J.;Beck, Christina M.;Hayes, Christopher S.
通讯作者:
Hayes, Christopher S.
DOI:
10.1073/pnas.78.10.6324
发表时间:
1981-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
CHAO, L;LEVIN, BR
通讯作者:
LEVIN, BR