7ROA | pdb_00007roa

Crystal structure of EntV136 from Enterococcus faecalis

• PDB DOI: https://doi.org/10.2210/pdb7ROA/pdb

• Classification: ANTIFUNGAL PROTEIN
• Organism(s): Enterococcus faecalis OG1RF
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-07-30 Released: 2022-10-12 
• Deposition Author(s): Stogios, P.J., Evdokimova, E., Kim, Y., Garsin, D., Savchenko, A., Joachimiak, A., Satchell, K.J.F., Center for Structural Genomics of Infectious Diseases (CSGID), Center for Structural Biology of Infectious Diseases (CSBID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 
  0.217 (Depositor), 0.219 (DCC) 
• R-Value Work: 
  0.175 (Depositor), 0.175 (DCC) 
• R-Value Observed: 
  0.177 (Depositor) 

Literature

Structural and functional analysis of EntV reveals a 12 amino acid fragment protective against fungal infections.

Cruz, M.R., Cristy, S., Guha, S., De Cesare, G.B., Evdokimova, E., Sanchez, H., Borek, D., Miramon, P., Yano, J., Fidel Jr., P.L., Savchenko, A., Andes, D.R., Stogios, P.J., Lorenz, M.C., Garsin, D.A.

(2022) Nat Commun 13: 6047-6047

• PubMed: 36229448 
• DOI: https://doi.org/10.1038/s41467-022-33613-1
• Primary Citation Related Structures: 
  7ROA


• PubMed Abstract: 
  

  Fungal pathogens are a continuing challenge due to few effective antifungals and a rise in resistance. In previous work, we described the inhibition of Candida albicans virulence following exposure to the 68 amino acid bacteriocin, EntV, secreted by Enterococcus faecalis. Here, to optimize EntV as a potential therapeutic and better understand its antifungal features, an X-ray structure is obtained. The structure consists of six alpha helices enclosing a seventh 16 amino acid helix (α7). The individual helices are tested for antifungal activity using in vitro and nematode infection assays. Interestingly, α7 retains antifungal, but not antibacterial activity and is also effective against Candida auris and Cryptococcus neoformans. Further reduction of α7 to 12 amino acids retains full antifungal activity, and excellent efficacy is observed in rodent models of C. albicans oropharyngeal, systemic, and venous catheter infections. Together, these results showcase EntV-derived peptides as promising candidates for antifungal therapeutic development.

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Organizational Affiliation: 
• Department of Microbiology and Molecular Genetics, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA.
BioZone, Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, M5S 3E5, Canada.
Department of Medicine, University of Wisconsin, Madison, WI, 53705, USA.
Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, WI, 53705, USA.
Department of Biophysics, The University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA.
Department of Oral and Craniofacial Biology, Louisiana State University Health School of Dentistry, New Orleans, LA, 70119, USA.
Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, AB, T2N 4N1, Canada.
Center for Structural Genomics of Infectious Diseases (CSGID), Chicago, IL, USA.
Department of Microbiology and Molecular Genetics, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA. [e-mail].
Department of Microbiology and Molecular Genetics, The University of Texas Health Science Center at Houston, Houston, TX, 77030, USA. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 14.94 kDa 
• Atom Count: 991 
• Modeled Residue Count: 117 
• Deposited Residue Count: 136 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
EntV	A	136	Enterococcus faecalis OG1RF	Mutation(s): 0
UniProt
Find proteins for Q836L4 (Enterococcus faecalis (strain ATCC 700802 / V583)) Explore Q836L4  Go to UniProtKB:  Q836L4

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free:  0.217 (Depositor), 0.219 (DCC) 
• R-Value Work:  0.175 (Depositor), 0.175 (DCC) 
• R-Value Observed: 0.177 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.394	α = 90
b = 32.064	β = 90.86
c = 49.992	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
SHELXDE	phasing
MLPHARE	phasing
BUCCANEER	model building
Coot	model building
DM	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2022-10-12 
Deposition Author(s): Stogios, P.J., Evdokimova, E., Kim, Y., Garsin, D., Savchenko, A., Joachimiak, A., Satchell, K.J.F., Center for Structural Genomics of Infectious Diseases (CSGID), Center for Structural Biology of Infectious Diseases (CSBID)

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	HHSN272201700060C

Revision History  

• Version 1.0: 2022-10-12
  Type: Initial release
  
• Version 1.1: 2022-11-23
  Changes: Database references
• Version 1.2: 2023-01-25
  Changes: Structure summary
• Version 1.3: 2024-11-20
  Changes: Data collection, Structure summary