2MMJ

Structure of a peptoid analogue of maculatin G15 in DPC micelles

• PDB DOI: https://doi.org/10.2210/pdb2MMJ/pdb
• BMRB: 19856

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Ranoidea genimaculata
• Mutation(s): No 


• Deposited: 2014-03-15 Released: 2014-07-23 
• Deposition Author(s): Uggerhoej, L.E., Guentert, P., Wimmer, R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Structural features of peptoid-peptide hybrids in lipid-water interfaces.

Uggerhj, L.E., Munk, J.K., Hansen, P.R., Guntert, P., Wimmer, R.

(2014) FEBS Lett 588: 3291-3297

• PubMed: 25063337 
• DOI: https://doi.org/10.1016/j.febslet.2014.07.016
• Primary Citation of Related Structures:  
  2MMJ, 2MN8, 2MN9


• PubMed Abstract: 
  

  The inclusion of peptoid monomers into antimicrobial peptides (AMPs) increases their proteolytic resistance, but introduces conformational flexibility (reduced hydrogen bonding ability and cis/trans isomerism). We here use NMR spectroscopy to answer how the insertion of a peptoid monomer influences the structure of a regular α-helical AMP upon interaction with a dodecyl phosphocholine (DPC) micelle. Insertion of [(2-methylpropyl)amino]acetic acid in maculatin-G15 shows that the structural change and conformational flexibility depends on the site of insertion. This is governed by the micelle interaction of the amphipathic helices flanking the peptoid monomer and the side chain properties of the peptoid and its preceding residue.

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Organizational Affiliation: 

Department of Biotechnology, Chemistry, and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 49, 9000 Aalborg, Denmark.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 2.15 kDa 
• Atom Count: 153 
• Modelled Residue Count: 22 
• Deposited Residue Count: 22 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
maculatin G15	A	22	Ranoidea genimaculata	Mutation(s): 0
UniProt
Find proteins for P82066 (Ranoidea genimaculata) Explore P82066  Go to UniProtKB:  P82066

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
I4G	A	L-PEPTIDE LINKING	C6 H13 N O2		GLY

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-07-23 
Deposition Author(s): Uggerhoej, L.E., Guentert, P., Wimmer, R.

Revision History  

• Version 1.0: 2014-07-23
  Type: Initial release
  
• Version 1.1: 2014-07-30
  Changes: Database references
• Version 1.2: 2014-08-27
  Changes: Other
• Version 1.3: 2014-12-03
  Changes: Database references
• Version 1.4: 2023-06-14
  Changes: Data collection, Database references, Derived calculations, Other