Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 1.27 kDa 
• Atom Count: 93 
• Modelled Residue Count: 9 
• Deposited Residue Count: 9 
• Unique protein chains: 1

 6NM3

NMR structure of WW295

• PDB DOI: 10.2210/pdb6NM3/pdb
• BMRB: 30558

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): synthetic construct
• Mutation(s): No 


• Deposited: 2019-01-10 Released: 2020-07-15 
• Deposition Author(s): Wang, G., Zarena, D.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 5 
• Selection Criteria: structures with the lowest energy 

Literature

Two distinct amphipathic peptide antibiotics with systemic efficacy.

Lakshmaiah Narayana, J., Mishra, B., Lushnikova, T., Wu, Q., Chhonker, Y.S., Zhang, Y., Zarena, D., Salnikov, E.S., Dang, X., Wang, F., Murphy, C., Foster, K.W., Gorantla, S., Bechinger, B., Murry, D.J., Wang, G.

(2020) Proc Natl Acad Sci U S A 117: 19446-19454

• PubMed: 32723829 
• DOI: 10.1073/pnas.2005540117
• Primary Citation of Related Structures:  
  6NM3


• PubMed Abstract: 
  

Antimicrobial peptides are important candidates for developing new classes of antibiotics because of their potency against antibiotic-resistant pathogens. Current research focuses on topical applications and it is unclear how to design peptides with systemic efficacy. To address this problem, we designed two potent peptides by combining database-guided discovery with structure-based design. When bound to membranes, these two short peptides with an identical amino acid composition can adopt two distinct amphipathic structures: A classic horizontal helix (horine) and a novel vertical spiral structure (verine). Their horizontal and vertical orientations on membranes were determined by solid-state ¹⁵ N NMR data. While horine was potent primarily against gram-positive pathogens, verine showed broad-spectrum antimicrobial activity. Both peptides protected greater than 80% mice from infection-caused deaths. Moreover, horine and verine also displayed significant systemic efficacy in different murine models comparable to conventional antibiotics. In addition, they could eliminate resistant pathogens and preformed biofilms. Significantly, the peptides showed no nephrotoxicity to mice after intraperitoneal or intravenous administration for 1 wk. Our study underscores the significance of horine and verine in fighting drug-resistant pathogens.

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Organizational Affiliation: 

Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198-5900; [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
WW295 peptide	A	9	synthetic construct	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 5 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-07-15 
Deposition Author(s): Wang, G., Zarena, D.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI105147
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI128230

Revision History  

• Version 1.0: 2020-07-15
  Type: Initial release
  
• Version 1.1: 2020-09-09
  Changes: Database references