PMID- 27079268
OWN - NLM
STAT- MEDLINE
DCOM- 20170309
LR  - 20170309
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 6
DP  - 2016 Apr 15
TI  - Structural basis of DNA sequence recognition by the response regulator PhoP in
      Mycobacterium tuberculosis.
PG  - 24442
LID - 10.1038/srep24442 [doi]
AB  - The transcriptional regulator PhoP is an essential virulence factor in
      Mycobacterium tuberculosis, and it presents a target for the development of new
      anti-tuberculosis drugs and attenuated tuberculosis vaccine strains. PhoP binds
      to DNA as a highly cooperative dimer by recognizing direct repeats of 7-bp motifs
      with a 4-bp spacer. To elucidate the PhoP-DNA binding mechanism, we determined
      the crystal structure of the PhoP-DNA complex. The structure revealed a tandem
      PhoP dimer that bound to the direct repeat. The surprising tandem arrangement of 
      the receiver domains allowed the four domains of the PhoP dimer to form a compact
      structure, accounting for the strict requirement of a 4-bp spacer and the highly 
      cooperative binding of the dimer. The PhoP-DNA interactions exclusively involved 
      the effector domain. The sequence-recognition helix made contact with the bases
      of the 7-bp motif in the major groove, and the wing interacted with the adjacent 
      minor groove. The structure provides a starting point for the elucidation of the 
      mechanism by which PhoP regulates the virulence of M. tuberculosis and guides the
      design of screening platforms for PhoP inhibitors.
FAU - He, Xiaoyuan
AU  - He X
AD  - Department of Biochemistry &Molecular Biology, Uniformed Services University of
      the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814, USA.
FAU - Wang, Liqin
AU  - Wang L
AD  - Department of Biochemistry &Molecular Biology, Uniformed Services University of
      the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814, USA.
FAU - Wang, Shuishu
AU  - Wang S
AD  - Department of Biochemistry &Molecular Biology, Uniformed Services University of
      the Health Sciences, 4301 Jones Bridge Road, Bethesda, Maryland 20814, USA.
LA  - eng
GR  - R01 GM079185/GM/NIGMS NIH HHS/United States
GR  - R01GM079185/GM/NIGMS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20160415
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
RN  - 0 (Bacterial Proteins)
RN  - 0 (DNA, Bacterial)
RN  - 125360-99-8 (PhoP protein, Bacteria)
SB  - IM
MH  - Bacterial Proteins/*chemistry/*metabolism
MH  - DNA, Bacterial/*chemistry/*metabolism
MH  - Gene Expression Regulation, Bacterial
MH  - Models, Molecular
MH  - Mycobacterium tuberculosis/*genetics/*metabolism
MH  - *Nucleic Acid Conformation
MH  - Phosphorylation
MH  - Protein Binding
MH  - Protein Conformation
MH  - Protein Interaction Domains and Motifs
MH  - Protein Multimerization
MH  - Structure-Activity Relationship
PMC - PMC4832192
OID - NLM: PMC4832192
EDAT- 2016/04/16 06:00
MHDA- 2017/03/10 06:00
CRDT- 2016/04/16 06:00
PHST- 2015/12/16 00:00 [received]
PHST- 2016/03/30 00:00 [accepted]
PHST- 2016/04/16 06:00 [entrez]
PHST- 2016/04/16 06:00 [pubmed]
PHST- 2017/03/10 06:00 [medline]
AID - srep24442 [pii]
AID - 10.1038/srep24442 [doi]
PST - epublish
SO  - Sci Rep. 2016 Apr 15;6:24442. doi: 10.1038/srep24442.