7OS8 | pdb_00007os8

NMR SOLUTION STRUCTURE OF [Pro3,DLeu9]TL

• PDB DOI: https://doi.org/10.2210/pdb7OS8/pdb
• BMRB: 34632

• Classification: ANTIMICROBIAL PROTEIN
• Organism(s): Rana temporaria
• Mutation(s): No 


• Deposited: 2021-06-08 Released: 2021-08-11 
• Deposition Author(s): Brancaccio, D., Carotenuto, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the least restraint violations 

Literature

First-in-Class Cyclic Temporin L Analogue: Design, Synthesis, and Antimicrobial Assessment.

Bellavita, R., Casciaro, B., Di Maro, S., Brancaccio, D., Carotenuto, A., Falanga, A., Cappiello, F., Buommino, E., Galdiero, S., Novellino, E., Grossmann, T.N., Mangoni, M.L., Merlino, F., Grieco, P.

(2021) J Med Chem 64: 11675-11694

• PubMed: 34296619 
• DOI: https://doi.org/10.1021/acs.jmedchem.1c01033
• Primary Citation Related Structures: 
  7OS8, 7OSD


• PubMed Abstract: 
  

  The pharmacodynamic and pharmacokinetic properties of bioactive peptides can be modulated by introducing conformational constraints such as intramolecular macrocyclizations, which can involve either the backbone and/or side chains. Herein, we aimed at increasing the α-helicity content of temporin L, an isoform of an intriguing class of linear antimicrobial peptides (AMPs), endowed with a wide antimicrobial spectrum, by the employment of diverse side-chain tethering strategies, including lactam, 1,4-substituted [1,2,3]-triazole, hydrocarbon, and disulfide linkers. Our approach resulted in a library of cyclic temporin L analogues that were biologically assessed for their antimicrobial, cytotoxic, and antibiofilm activities, leading to the development of the first-in-class cyclic peptide related to this AMP family. Our results allowed us to expand the knowledge regarding the relationship between the α-helical character of temporin derivatives and their biological activity, paving the way for the development of improved antibiotic cyclic AMP analogues.

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Organizational Affiliation: 
• Department of Pharmacy, University of Naples "Federico II", Naples 80131, Italy.
Center for Life Nano- & Neuro-Science, Fondazione Istituto Italiano di Tecnologia (IIT), Rome 00161, Italy.
DiSTABiF, University of Campania "Luigi Vanvitelli", Caserta 81100, Italy.
Department of Agricultural Sciences, University of Naples "Federico II", Portici 80055, Italy.
Department of Biochemical Sciences, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome 00185, Italy.
Department of Chemistry & Pharmaceutical Sciences, VU University Amsterdam, Amsterdam 1081 HZ, The Netherlands.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 1.61 kDa 
• Atom Count: 116 
• Modeled Residue Count: 14 
• Deposited Residue Count: 14 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PHE-VAL-PRO-TRP-PHE-SER-LYS-PHE-DLE-GLY-ARG-ILE-LEU-NH2	A	14	Rana temporaria	Mutation(s): 0
UniProt
Find proteins for P57104 (Rana temporaria) Explore P57104  Go to UniProtKB:  P57104

Small Molecules

Non-standard Monomers  1 Unique
ID	Chains	Type	Formula	2D Diagram
DLE	A	D-PEPTIDE LINKING	C6 H13 N O2

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the least restraint violations 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-08-11 
Deposition Author(s): Brancaccio, D., Carotenuto, A.

Revision History  

• Version 1.0: 2021-08-11
  Type: Initial release
  
• Version 1.1: 2021-08-25
  Changes: Database references
• Version 1.2: 2024-10-09
  Changes: Data collection, Database references, Structure summary