5TP1 image
Entry Detail
PDB ID:
5TP1
Title:
The structure of the C-terminus of virulence protein IncE from Chlamydia trachomatis bound to Mus musculus SNX5-PX domain
Biological Source:
PDB Version:
Deposition Date:
2016-10-19
Release Date:
2017-08-30
Method Details:
Experimental Method:
Resolution:
2.31 Å
R-Value Free:
0.26
R-Value Work:
0.20
R-Value Observed:
0.20
Space Group:
P 1 21 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Sorting nexin-5
Chain IDs:A, B, C, D
Chain Length:166
Number of Molecules:4
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:Inclusion membrane protein E
Chain IDs:E (auth: P), F (auth: Q), G (auth: R), H (auth: S)
Chain Length:25
Number of Molecules:4
Biological Source:Chlamydia trachomatis D/UW-3/CX
Primary Citation
Chlamydia interfere with an interaction between the mannose-6-phosphate receptor and sorting nexins to counteract host restriction.
Elife 6 ? ? (2017)
PMID: 28252385 DOI: 10.7554/eLife.22709

Abstact

Chlamydia trachomatis is an obligate intracellular pathogen that resides in a membrane-bound compartment, the inclusion. The bacteria secrete a unique class of proteins, Incs, which insert into the inclusion membrane and modulate the host-bacterium interface. We previously reported that IncE binds specifically to the Sorting Nexin 5 Phox domain (SNX5-PX) and disrupts retromer trafficking. Here, we present the crystal structure of the SNX5-PX:IncE complex, showing IncE bound to a unique and highly conserved hydrophobic groove on SNX5. Mutagenesis of the SNX5-PX:IncE binding surface disrupts a previously unsuspected interaction between SNX5 and the cation-independent mannose-6-phosphate receptor (CI-MPR). Addition of IncE peptide inhibits the interaction of CI-MPR with SNX5. Finally, C. trachomatis infection interferes with the SNX5:CI-MPR interaction, suggesting that IncE and CI-MPR are dependent on the same binding surface on SNX5. Our results provide new insights into retromer assembly and underscore the power of using pathogens to discover disease-related cell biology.

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