Abstract:
:The transcriptional regulator BrlR is a member of the MerR family of multidrug transport activators in Pseudomonas aeruginosa. Recent study indicates that BrlR is a novel 3',5'-cyclic diguanylic acid (c-di-GMP) receptor and can be activated by c-di-GMP. To gain insight into BrlR function, we determined the structure of BrlR with c-di-GMP complex structure to 2.5 Å. The structure and size exclusion chromatography (SEC) data revealed BrlR forms a tetramer and each BrlR protomer consists of three parts, DNA-binding domain, a coiled-coil region and GyrI-like domain. There are two different c-di-GMP binding sites located mainly at the DNA binding domain of each BrlR protomer and do not overlap with the GyrI-like domain. The drug-binding pocket in GyrI-like domain is much conserved indicating it can also bind flat-shaped molecules like other multidrug resistance (MDR) proteins.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Raju H,Sharma Rdoi
10.1016/j.bbrc.2017.06.033subject
Has Abstractpub_date
2017-08-19 00:00:00pages
260-264issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(17)31161-0journal_volume
490pub_type
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journal_title:Biochemical and biophysical research communications
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