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* Residue conservation analysis
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PDB id:
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Cell invasion
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Title:
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Semet substituted shigella flexneri ipad
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Structure:
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Invasin ipad. Chain: a, b. Fragment: residues 121-332. Engineered: yes. Other_details: protelysis product. Semet substituted
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Source:
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Shigella flexneri. Organism_taxid: 623. Strain: 301. Variant: serotype 2a. Atcc: 700930. Expressed in: escherichia coli. Expression_system_taxid: 469008.
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Resolution:
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3.10Å
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R-factor:
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0.262
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R-free:
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0.276
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Authors:
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S.Johnson,P.Roversi,M.Espina,A.Olive,J.E.Deane,S.Birket,T.Field, W.D.Picking,A.J.Blocker,E.E.Galyov,W.L.Picking,S.M.Lea
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Key ref:
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S.Johnson
et al.
(2007).
Self-chaperoning of the type III secretion system needle tip proteins IpaD and BipD.
J Biol Chem,
282,
4035-4044.
PubMed id:
DOI:
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Date:
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24-Nov-06
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Release date:
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30-Nov-06
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PROCHECK
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Headers
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References
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DOI no:
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J Biol Chem
282:4035-4044
(2007)
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PubMed id:
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Self-chaperoning of the type III secretion system needle tip proteins IpaD and BipD.
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S.Johnson,
P.Roversi,
M.Espina,
A.Olive,
J.E.Deane,
S.Birket,
T.Field,
W.D.Picking,
A.J.Blocker,
E.E.Galyov,
W.L.Picking,
S.M.Lea.
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ABSTRACT
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Bacteria expressing type III secretion systems (T3SS) have been responsible for
the deaths of millions worldwide, acting as key virulence elements in diseases
ranging from plague to typhoid fever. The T3SS is composed of a basal body,
which traverses both bacterial membranes, and an external needle through which
effector proteins are secreted. We report multiple crystal structures of two
proteins that sit at the tip of the needle and are essential for virulence: IpaD
from Shigella flexneri and BipD from Burkholderia pseudomallei. The structures
reveal that the N-terminal domains of the molecules are intramolecular
chaperones that prevent premature oligomerization, as well as sharing structural
homology with proteins involved in eukaryotic actin rearrangement. Crystal
packing has allowed us to construct a model for the tip complex that is
supported by mutations designed using the structure.
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Selected figure(s)
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Figure 4.
FIGURE 4. Consequences of removal of the N-terminal domain.
a, proteolytic sensitivity of the N-terminal domain of IpaD.
IpaD was incubated with trypsin at various ratios (w:w), and the
resulting digests were resolved on SDS-PAGE. Band 1 (24 kDa)
begins at residue 120 and Band 2 (20 kDa) at residue 138. b,
surface representation of IpaD[39-130] (left) and IpaD[131-322]
(right) with hydrophobic residues colored green and brown,
respectively. IpaD[39-130] is rotated through 180° along the
long axis relative to IpaD[131-322] to demonstrate the
complementary hydrophobic surfaces. The surface is presented as
transparent to allow visualization of the secondary structure.
c, analytical gel filtration chromatography (Superdex 200, HR
10/30) of IpaD before and after subtilisin treatment. Elution
volume of each species is noted along with the M[r] calculated
from SDS-PAGE. d, overlay of five structures of the IpaD
coiled-coil demonstrating the flexibility of the helices in the
absence of the N-terminal domain. The conformation of the coil
in the presence of the N-terminal domain is shown in green. The
C-terminal domain has been removed to aid clarity.
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Figure 5.
FIGURE 5. Oligomerization of IpaD. a, ribbon diagram of the
non-crystallographic dimer found in crystal form 2 (18).
Molecule A is shown in green and molecule B in blue. b, detailed
view of the dimer interaction site with side chains displayed,
colored as in a. Only structural elements that contribute to the
binding site are displayed for clarity. c, pentamer produced
using the non-crystallographic symmetry from crystal form 2. At
the top are ribbon representations and at the bottom surface
views. The panels on the left are related to the panels on the
right by a rotation of 90°.
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The above figures are
reprinted
from an Open Access publication published by the ASBMB:
J Biol Chem
(2007,
282,
4035-4044)
copyright 2007.
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Figures were
selected
by an automated process.
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Literature references that cite this PDB file's key reference
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PubMed id
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Reference
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H.Sato,
M.L.Hunt,
J.J.Weiner,
A.T.Hansen,
and
D.W.Frank
(2011).
Modified needle-tip PcrV proteins reveal distinct phenotypes relevant to the control of type III secretion and intoxication by Pseudomonas aeruginosa.
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PLoS One,
6,
e18356.
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L.Gong,
M.Cullinane,
P.Treerat,
G.Ramm,
M.Prescott,
B.Adler,
J.D.Boyce,
and
R.J.Devenish
(2011).
The Burkholderia pseudomallei type III secretion system and BopA are required for evasion of LC3-associated phagocytosis.
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PLoS One,
6,
e17852.
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L.J.Worrall,
E.Lameignere,
and
N.C.Strynadka
(2011).
Structural overview of the bacterial injectisome.
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Curr Opin Microbiol,
14,
3-8.
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P.J.Matteï,
E.Faudry,
V.Job,
T.Izoré,
I.Attree,
and
A.Dessen
(2011).
Membrane targeting and pore formation by the type III secretion system translocon.
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FEBS J,
278,
414-426.
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S.Chatterjee,
D.Zhong,
B.A.Nordhues,
K.P.Battaile,
S.Lovell,
and
R.N.De Guzman
(2011).
The crystal structures of the Salmonella type III secretion system tip protein SipD in complex with deoxycholate and chenodeoxycholate.
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Protein Sci,
20,
75-86.
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PDB codes:
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A.D.Roehrich,
I.Martinez-Argudo,
S.Johnson,
A.J.Blocker,
and
A.K.Veenendaal
(2010).
The extreme C terminus of Shigella flexneri IpaB is required for regulation of type III secretion, needle tip composition, and binding.
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Infect Immun,
78,
1682-1691.
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A.P.Markham,
B.S.Barrett,
R.Esfandiary,
W.L.Picking,
W.D.Picking,
S.B.Joshi,
and
C.R.Middaugh
(2010).
Formulation and immunogenicity of a potential multivalent type III secretion system-based protein vaccine.
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J Pharm Sci,
99,
4497-4509.
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C.S.Hayes,
S.K.Aoki,
and
D.A.Low
(2010).
Bacterial contact-dependent delivery systems.
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Annu Rev Genet,
44,
71-90.
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E.E.Galyov,
P.J.Brett,
and
D.DeShazer
(2010).
Molecular insights into Burkholderia pseudomallei and Burkholderia mallei pathogenesis.
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Annu Rev Microbiol,
64,
495-517.
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I.Martinez-Argudo,
and
A.J.Blocker
(2010).
The Shigella T3SS needle transmits a signal for MxiC release, which controls secretion of effectors.
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Mol Microbiol,
78,
1365-1378.
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J.Peng,
J.Yang,
and
Q.Jin
(2010).
Research progress in Shigella in the postgenomic era.
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Sci China Life Sci,
53,
1284-1290.
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T.Rathinavelan,
L.Zhang,
W.L.Picking,
D.D.Weis,
R.N.De Guzman,
and
W.Im
(2010).
A repulsive electrostatic mechanism for protein export through the type III secretion apparatus.
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Biophys J,
98,
452-461.
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J.L.Hodgkinson,
A.Horsley,
D.Stabat,
M.Simon,
S.Johnson,
P.C.da Fonseca,
E.P.Morris,
J.S.Wall,
S.M.Lea,
and
A.J.Blocker
(2009).
Three-dimensional reconstruction of the Shigella T3SS transmembrane regions reveals 12-fold symmetry and novel features throughout.
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Nat Struct Mol Biol,
16,
477-485.
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M.C.Chibucos,
T.T.Tseng,
and
J.C.Setubal
(2009).
Describing commonalities in microbial effector delivery using the Gene Ontology.
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Trends Microbiol,
17,
312-319.
|
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A.J.Blocker,
J.E.Deane,
A.K.Veenendaal,
P.Roversi,
J.L.Hodgkinson,
S.Johnson,
and
S.M.Lea
(2008).
What's the point of the type III secretion system needle?
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Proc Natl Acad Sci U S A,
105,
6507-6513.
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A.P.Markham,
S.E.Birket,
W.D.Picking,
W.L.Picking,
and
C.R.Middaugh
(2008).
pH sensitivity of type III secretion system tip proteins.
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Proteins,
71,
1830-1842.
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C.A.Mueller,
P.Broz,
and
G.R.Cornelis
(2008).
The type III secretion system tip complex and translocon.
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Mol Microbiol,
68,
1085-1095.
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G.N.Schroeder,
and
H.Hilbi
(2008).
Molecular pathogenesis of Shigella spp.: controlling host cell signaling, invasion, and death by type III secretion.
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Clin Microbiol Rev,
21,
134-156.
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J.E.Deane,
S.C.Graham,
E.P.Mitchell,
D.Flot,
S.Johnson,
and
S.M.Lea
(2008).
Crystal structure of Spa40, the specificity switch for the Shigella flexneri type III secretion system.
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Mol Microbiol,
69,
267-276.
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PDB code:
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K.F.Stensrud,
P.R.Adam,
C.D.La Mar,
A.J.Olive,
G.H.Lushington,
R.Sudharsan,
N.L.Shelton,
R.S.Givens,
W.L.Picking,
and
W.D.Picking
(2008).
Deoxycholate interacts with IpaD of Shigella flexneri in inducing the recruitment of IpaB to the type III secretion apparatus needle tip.
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J Biol Chem,
283,
18646-18654.
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K.U.Wendt,
M.S.Weiss,
P.Cramer,
and
D.W.Heinz
(2008).
Structures and diseases.
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Nat Struct Mol Biol,
15,
117-120.
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T.F.Moraes,
T.Spreter,
and
N.C.Strynadka
(2008).
Piecing together the type III injectisome of bacterial pathogens.
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Curr Opin Struct Biol,
18,
258-266.
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M.Espina,
S.F.Ausar,
C.R.Middaugh,
M.A.Baxter,
W.D.Picking,
and
W.L.Picking
(2007).
Conformational stability and differential structural analysis of LcrV, PcrV, BipD, and SipD from type III secretion systems.
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Protein Sci,
16,
704-714.
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P.Broz,
C.A.Mueller,
S.A.Müller,
A.Philippsen,
I.Sorg,
A.Engel,
and
G.R.Cornelis
(2007).
Function and molecular architecture of the Yersinia injectisome tip complex.
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Mol Microbiol,
65,
1311-1320.
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The most recent references are shown first.
Citation data come partly from CiteXplore and partly
from an automated harvesting procedure. Note that this is likely to be
only a partial list as not all journals are covered by
either method. However, we are continually building up the citation data
so more and more references will be included with time.
Where a reference describes a PDB structure, the PDB
codes are
shown on the right.
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}
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