9RD7 | pdb_00009rd7

Cryo-EM structure of amyloidogenic antimicrobial peptide Aurein 1.2 polymorph 1 in acqueous solution

• PDB DOI: https://doi.org/10.2210/pdb9RD7/pdb
• EM Map EMD-53928: EMDB EMDataResource

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Ranoidea aurea
• Expression System: Ranoidea aurea
• Mutation(s): Yes 


• Deposited: 2025-06-02 Released: 2026-08-26 
• Deposition Author(s): Ragonis-Bachar, P., Strati, F., Gustavsson, E., Khokhlov, A., Barnea, E., Rayan, B., Upchr, A., Landau, M., Banerjee, S.
• Funding Organization(s): European Research Council (ERC), Israel Science Foundation, Volkswagen Foundation, German Research Foundation (DFG)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Starting Model: other

Literature

Amyloidogenic Nature and Structural Polymorphism of Antimicrobial, Virulent and Defense Peptides

Ragonis-Bachar, P., Strati, F., Gustavsson, E., Khokhlov, A., Barnea, E., Rayan, B., Upchr, A., Landau, M., Banerjee, S.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 24-mer - A24 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 35.54 kDa 
• Atom Count: 2,520 
• Modeled Residue Count: 336 
• Deposited Residue Count: 336 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aurein-1.2	A [auth T], B [auth V], C [auth R], D [auth X], E [auth L], F [auth N], G [auth J], H [auth P], I [auth D], J [auth F], K [auth B], L [auth H], M [auth S], N [auth U], O [auth Q], P [auth W], Q [auth K], R [auth M], S [auth I], T [auth O], U [auth C], V [auth E], W [auth A], X [auth G]	14	Ranoidea aurea	Mutation(s): 1
UniProt
Find proteins for P82387 (Ranoidea raniformis) Explore P82387  Go to UniProtKB:  P82387

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.80 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	Servalcat
RECONSTRUCTION	RELION	4

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-08-26 
Deposition Author(s): Ragonis-Bachar, P., Strati, F., Gustavsson, E., Khokhlov, A., Barnea, E., Rayan, B., Upchr, A., Landau, M., Banerjee, S.

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Funding Organization	Location	Grant Number
European Research Council (ERC)	European Union	101087140
Israel Science Foundation	Israel	2111/20
Volkswagen Foundation	Germany	76251-4659/2022 (ZN 4042)
German Research Foundation (DFG)	Germany	152/772-1
German Research Foundation (DFG)	Germany	152/774-1
German Research Foundation (DFG)	Germany	152/775-1
German Research Foundation (DFG)	Germany	152/776-1
German Research Foundation (DFG)	Germany	152/777-1 FUGG

Revision History  

• Version 1.0: 2026-08-26
  Type: Initial release