Spr1814 of Streptococcus pneumoniae is a response regulator (RR) that belongs to the NarL/FixJ subfamily and has a four-helix helix-turn-helix DNA-binding domain. Here, the X-ray crystal structure of the full-length spr1814 in complex with a phosphate analogue beryllium fluoride (BeF3-) was determined at 2.0 Å. This allows for a structural comparison with the previously reported full-length unphosphorylated spr1814. The phosphorylation of conserved aspartic acid residue of N-terminal receiver domain triggers a structural perturbation at the α4-β5-α5 interface, leading to the domain reorganization of spr1814, and this is achieved by a rotational change in the C-terminal DNA-binding domain.
|Number of pages||5|
|Journal||Biochemical and biophysical research communications|
|Publication status||Published - 2016 Apr 29|
Bibliographical noteFunding Information:
We thank the staff at beamline 7A of the Pohang Light Source, Republic of Korea and beamline AR-NW12 of the Photon Factory, Japan for assistance during data collection. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (grant No. 2011-0012059 ).
© 2016 Elsevier Inc.
- NarL subfamily
- Response regulator
- Streptococcus pneumoniae
- Two-component system
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology