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Open data
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Basic information
Entry | Database: PDB / ID: 8s4l | ||||||
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Title | NMR structure of orfamide A in micellar DPC solution | ||||||
![]() | orfamide A | ||||||
![]() | SURFACTANT PROTEIN / Non-ribosomal polipeptide / Cyclic lipodepsipe / Antimicrobial peptide / Biosurfactant | ||||||
Function / homology | : / 3-HYDROXY-TETRADECANOIC ACID / polypeptide(D)![]() | ||||||
Biological species | ![]() | ||||||
Method | SOLUTION NMR / molecular dynamics | ||||||
![]() | Kovacs, B. / Geudens, N. / Martins, J.C. | ||||||
Funding support | ![]()
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![]() | ![]() Title: NMR structure of orfamide A in micellar DPC solution Authors: Kovacs, B. / Geudens, N. / Martins, J.C. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 46.7 KB | Display | ![]() |
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PDB format | ![]() | 31.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 361.1 KB | Display | ![]() |
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Full document | ![]() | 363.5 KB | Display | |
Data in XML | ![]() | 7.6 KB | Display | |
Data in CIF | ![]() | 9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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NMR ensembles |
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Components
#1: Polypeptide(D) | Type: Lipopeptide / Mass: 1087.308 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: 1) The polypeptide chain of orfamide A consists of 10 amino acids. 2) The N-terminal amino acid (DLE) is acylated with an (R)-3-hydroxy-tetradecanoic acid moeity (FTT) which is indicated as ...Details: 1) The polypeptide chain of orfamide A consists of 10 amino acids. 2) The N-terminal amino acid (DLE) is acylated with an (R)-3-hydroxy-tetradecanoic acid moeity (FTT) which is indicated as the first residue. 3) The depsi (ester) bond is established between the VAL11 carboxyl and 2TL4 side-chain OH group. 4) There are 2 amino acids with unusual side-chain configurations, D-allo-ILE5 (28J) and D-allo-THR4 (2TL4)., Cyclic lipopeptide Source: (natural) ![]() |
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#2: Chemical | ChemComp-FTT / |
Compound details | Cyclic lipopeptide with antifungal activity |
Has ligand of interest | N |
Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: SOLUTION NMR | ||||||||||||||||||||||||||||||
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NMR experiment |
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Sample preparation
Details | Type: solution Contents: 1.9 mM orfamide A, 111.9 mM [U-2H] DPC, 90% H2O/10% D2O Details: Orfamide A was dissolved in the micellar solution of uniformly deuterated dodecylphosphocoline (DPC-d38). Solvent: 10 mM Na2HPO4/NaH2PO4 buffer at pH 7.4. Label: 1H / Solvent system: 90% H2O/10% D2O | ||||||||||||
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Sample |
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Sample conditions | Ionic strength: 26 (buffer only) mM / Label: conditions_1 / pH: 7.4 / Pressure: 1 atm / Temperature: 310 K |
-NMR measurement
NMR spectrometer | Type: Bruker AVANCE II / Manufacturer: Bruker / Model: AVANCE II / Field strength: 700 MHz / Details: Prodigy Cryoprobe |
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Processing
NMR software |
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Refinement | Method: molecular dynamics / Software ordinal: 1 Details: The lowest energy NMR structure issued from CNS was refined using unrestrained AMBER molecular dynamics simulations (against the ff14SB force field). Here, we modelled the interaction of a ...Details: The lowest energy NMR structure issued from CNS was refined using unrestrained AMBER molecular dynamics simulations (against the ff14SB force field). Here, we modelled the interaction of a single peptide molecule with an explicit dodecylphosphocholine (DPC) micelle. The representative peptide conformation of the trajectory (=refined structure) was selected using cluster analysis. Solvent model: TIP3P | ||||||||||||||||||||||||
NMR representative | Selection criteria: closest to the average | ||||||||||||||||||||||||
NMR ensemble | Conformer selection criteria: structures with the lowest energy Conformers calculated total number: 100 / Conformers submitted total number: 11 |