PMID- 15257292
OWN - NLM
STAT- MEDLINE
DCOM- 20050614
LR  - 20170219
IS  - 0261-4189 (Print)
IS  - 0261-4189 (Linking)
VI  - 23
IP  - 15
DP  - 2004 Aug 4
TI  - The carboxy-terminal portion of TnsC activates the Tn7 transposase through a
      specific interaction with TnsA.
PG  - 2972-81
AB  - Tn7 transposition requires the assembly of a nucleoprotein complex containing
      four self-encoded proteins, transposon ends, and target DNA. Within this complex,
      TnsC, the molecular switch that regulates transposition, and TnsA, one part of
      the transposase, interact directly. Here, we demonstrate that residues 504-555 of
      TnsC are responsible for TnsA/TnsC interaction. The crystal structure of the
      TnsA/TnsC(504-555) complex, resolved to 1.85 A, illustrates the burial of a large
      hydrophobic patch on the surface of TnsA. One consequence of sequestering this
      patch is a marked increase in the thermal stability of TnsA as shown by
      differential scanning calorimetry. A model based on the complex structure
      suggested that TnsA and a slightly longer version of the cocrystallized TnsC
      fragment (residues 495-555) might cooperate to bind DNA, a prediction confirmed
      using gel mobility shift assays. Donor DNA binding by the TnsA/TnsC(495-555)
      complex is correlated with the activation of the TnsAB transposase, as measured
      by double-stranded DNA cleavage assays, demonstrating the importance of the
      TnsA/TnsC interaction in affecting Tn7 transposition.
FAU - Ronning, Donald R
AU  - Ronning DR
AD  - Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and
      Kidney Diseases, Bethesda, MD 20892, USA.
FAU - Li, Ying
AU  - Li Y
FAU - Perez, Zhanita N
AU  - Perez ZN
FAU - Ross, Philip D
AU  - Ross PD
FAU - Hickman, Alison Burgess
AU  - Hickman AB
FAU - Craig, Nancy L
AU  - Craig NL
FAU - Dyda, Fred
AU  - Dyda F
LA  - eng
SI  - PDB/1T0F
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
DEP - 20040715
PL  - England
TA  - EMBO J
JT  - The EMBO journal
JID - 8208664
RN  - 0 (DNA Transposable Elements)
RN  - 0 (DNA-Binding Proteins)
RN  - 0 (Escherichia coli Proteins)
RN  - 0 (TnsA protein, E coli)
RN  - 0 (TnsC protein, E coli)
RN  - 9007-49-2 (DNA)
RN  - EC 2.7.7.- (Transposases)
SB  - IM
MH  - Amino Acid Sequence
MH  - Crystallography, X-Ray
MH  - DNA/metabolism
MH  - DNA Transposable Elements/genetics
MH  - DNA-Binding Proteins/*chemistry/genetics/*metabolism
MH  - Enzyme Activation
MH  - Escherichia coli/chemistry/genetics/metabolism
MH  - Escherichia coli Proteins/*chemistry/genetics/*metabolism
MH  - Models, Molecular
MH  - Molecular Sequence Data
MH  - Protein Binding
MH  - Protein Denaturation
MH  - Protein Structure, Quaternary
MH  - Sequence Alignment
MH  - Substrate Specificity
MH  - Temperature
MH  - Transposases/*metabolism
PMC - PMC514928
OID - NLM: PMC514928
EDAT- 2004/07/17 05:00
MHDA- 2005/06/15 09:00
CRDT- 2004/07/17 05:00
PHST- 2004/03/16 00:00 [received]
PHST- 2004/06/15 00:00 [accepted]
PHST- 2004/07/17 05:00 [pubmed]
PHST- 2005/06/15 09:00 [medline]
PHST- 2004/07/17 05:00 [entrez]
AID - 10.1038/sj.emboj.7600311 [doi]
AID - 7600311 [pii]
PST - ppublish
SO  - EMBO J. 2004 Aug 4;23(15):2972-81. doi: 10.1038/sj.emboj.7600311. Epub 2004 Jul
      15.