Macromolecule Content

• Total Structure Weight: 3509.96 
• Atom Count: 247 
• Residue Count: 32 
• Unique protein chains: 1

2KEG

NMR structure of Plantaricin K in DPC-micelles

• DOI: 10.2210/pdb2KEG/pdb
• BMRB: 16148

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Lactobacillus plantarum


• Deposited: 2009-01-30 Released: 2009-07-07 
• Deposition Author(s): Rogne, P., Haugen, M., Fimland, G., Nissen-Meyer, J., Kristiansen, P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Three-dimensional structure of the two-peptide bacteriocin plantaricin JK.

Rogne, P., Haugen, C., Fimland, G., Nissen-Meyer, J., Kristiansen, P.E.

(2009) Peptides 30: 1613-1621

• PubMed: 19538999 
• DOI: 10.1016/j.peptides.2009.06.010
• Primary Citation of Related Structures:  
  2KHF, 2KHG, 2KEH


• PubMed Abstract: 
  

The three-dimensional structures of the two peptides, PlnJ and PlnK, that constitutes the two-peptide bacteriocin plantaricin JK have been solved in water/TFE and water/DPC-micellar solutions using nuclear magnetic resonance (NMR) spectroscopy. PlnJ, a 25 residue peptide, has an N-terminal amphiphilic alpha-helix between Trp-3 and Tyr-15. The 32 residues long PlnK forms a central amphiphilic alpha-helix between Gly-9 and Leu-24. Measurements of the effect on anti-microbial activity of single glycine replacements in PlnJ and PlnK show that Gly-13 and Gly-17 in both peptides are very sensitive, giving more than a 100-fold reduction in activity when large residues replace glycine. In variants where other glycine residues, Gly-20 in PlnJ and Gly-7, Gly-9, Gly-24 and Gly-25 in PlnK, were replaced, the activity was reduced less than 10-fold. It is proposed that the detrimental effect on activity when exchanging Gly-13 and Gly-17 in PlnJ and PlnK is a result of reduced ability of the two peptides to interact through the GxxxG-motifs constituting Gly-13 and Gly-17.

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Organizational Affiliation: 

Department of Molecular Biosciences, University of Oslo, Blindern, Oslo, Norway. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PlnK	A	32	Lactobacillus plantarum	Mutation(s): 0  Gene Names: plnK
Find proteins for P71460 (Lactobacillus plantarum) Go to UniProtKB:  P71460

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• Olderado: 2KEG Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2009-01-30 
• Released Date: 2009-07-07 
• Deposition Author(s): Rogne, P., Haugen, M., Fimland, G., Nissen-Meyer, J., Kristiansen, P.

Revision History 

• Version 1.0: 2009-07-07
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance