2ERI | pdb_00002eri

Solution structure of circulin B

• PDB DOI: https://doi.org/10.2210/pdb2ERI/pdb

• Classification: ANTIBIOTIC
• Organism(s): Chassalia parviflora
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-10-24 Released: 2005-11-15 
• Deposition Author(s): Craik, D.J., Daly, N.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Structure of circullin B and implications for antimicrobial activity of the cyclotides

Koltay, A., Daly, N.L., Gustafson, K.R., Craik, D.J.

(2005) Int J Pept Protein Res 11: 99-106

• DOI: https://doi.org/10.1007/s10989-004-1722-2

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 3.31 kDa 
• Atom Count: 225 
• Modeled Residue Count: 31 
• Deposited Residue Count: 31 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Circulin B	A	31	Chassalia parviflora	Mutation(s): 0
UniProt
Find proteins for P56879 (Chassalia parviflora) Explore P56879  Go to UniProtKB:  P56879

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-11-15 
Deposition Author(s): Craik, D.J., Daly, N.L.

Revision History  

• Version 1.0: 2005-11-15
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-09
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-10-09
  Changes: Data collection, Structure summary