2MFO

Solution structure of the C-terminally encoded peptide of the model plant host Medicago truncatula - CEP1

• PDB DOI: https://doi.org/10.2210/pdb2MFO/pdb
• BMRB: 19556

• Classification: PLANT PROTEIN
• Organism(s): Medicago truncatula
• Mutation(s): No 


• Deposited: 2013-10-14 Released: 2013-12-11 
• Deposition Author(s): Bobay, B.G., DiGennaro, P., Bird, D.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Solution NMR studies of the plant peptide hormone CEP inform function.

Bobay, B.G., Digennaro, P., Scholl, E., Imin, N., Djordjevic, M.A., McK Bird, D.

(2013) FEBS Lett 587: 3979-3985

• PubMed: 24211833 
• DOI: https://doi.org/10.1016/j.febslet.2013.10.033
• Primary Citation of Related Structures:  
  2MFM, 2MFO


• PubMed Abstract: 
  

  The C-terminally Encoded Peptide (CEP) family of regulatory peptides controls root development in vascular plants. Here, we present the first NMR structures of CEP. We show that root-knot nematode (RKN: Meloidogyne spp.) also encodes CEP, presumably to mimic plant CEP as part of their stereotypic, parasitic interaction with vascular plants. Molecular dynamics simulations of plant- and nematode-encoded CEP displaying known posttranslational modifications (PTM) provided insight into the structural effects of PTM and the conformational plasticity and rigidity of CEP. Potential mechanisms of action are discussed with respect to the structure and sampling of conformational space.

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Organizational Affiliation: 

Department of Molecular and Structural Biochemistry, NC State University, Raleigh, NC 27695, United States.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 1.5 kDa 
• Atom Count: 106 
• Modelled Residue Count: 15 
• Deposited Residue Count: 15 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CEP1	A	15	Medicago truncatula	Mutation(s): 0
UniProt
Find proteins for G7K427 (Medicago truncatula) Explore G7K427  Go to UniProtKB:  G7K427

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
HZP	A	L-PEPTIDE LINKING	C5 H9 N O3		PRO

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 10 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-12-11 
Deposition Author(s): Bobay, B.G., DiGennaro, P., Bird, D.M.

Revision History  

• Version 1.0: 2013-12-11
  Type: Initial release
  
• Version 1.1: 2013-12-25
  Changes: Database references
• Version 1.2: 2023-06-14
  Changes: Data collection, Database references, Derived calculations, Other