5CUM

Crystal structure of Human Defensin-5 Y27A mutant crystal form 1.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Human Enteric alpha-Defensin 5 Promotes Shigella Infection by Enhancing Bacterial Adhesion and Invasion.

Xu, D.Liao, C.Zhang, B.Tolbert, W.D.He, W.Dai, Z.Zhang, W.Yuan, W.Pazgier, M.Liu, J.Yu, J.Sansonetti, P.J.Bevins, C.L.Shao, Y.Lu, W.

(2018) Immunity 

  • DOI: 10.1016/j.immuni.2018.04.014
  • Primary Citation of Related Structures:  
    5CUJ, 5CUI, 5CUM

  • PubMed Abstract: 
  • Shigella is a Gram-negative bacterium that causes bacillary dysentery worldwide. It invades the intestinal epithelium to elicit intense inflammation and tissue damage, yet the underlying mechanisms of its host selectivity and low infectious inoculum remain perplexing ...

    Shigella is a Gram-negative bacterium that causes bacillary dysentery worldwide. It invades the intestinal epithelium to elicit intense inflammation and tissue damage, yet the underlying mechanisms of its host selectivity and low infectious inoculum remain perplexing. Here, we report that Shigella co-opts human α-defensin 5 (HD5), a host defense peptide important for intestinal homeostasis and innate immunity, to enhance its adhesion to and invasion of mucosal tissues. HD5 promoted Shigella infection in vitro in a structure-dependent manner. Shigella, commonly devoid of an effective host-adhesion apparatus, preferentially targeted HD5 to augment its ability to colonize the intestinal epithelium through interactions with multiple bacterial membrane proteins. HD5 exacerbated infectivity and Shigella-induced pathology in a culture of human colorectal tissues and three animal models. Our findings illuminate how Shigella exploits innate immunity by turning HD5 into a virulence factor for infection, unveiling a mechanism of action for this highly proficient human pathogen.


    Organizational Affiliation

    Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China; Center for Translational Medicine, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China; Institute of Human Virology and Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, USA. Electronic address: wlu@ihv.umaryland.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Defensin-5A, B, C32Homo sapiensMutation(s): 1 
Gene Names: DEFA5DEF5
UniProt & NIH Common Fund Data Resources
Find proteins for Q01523 (Homo sapiens)
Explore Q01523 
Go to UniProtKB:  Q01523
PHAROS:  Q01523
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.173 
  • R-Value Observed: 0.175 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.603α = 90
b = 59.966β = 111.36
c = 38.272γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
REFMACrefinement
HKL-2000data collection
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-07-27
    Type: Initial release
  • Version 1.1: 2018-06-13
    Changes: Data collection, Database references, Derived calculations