+Open data
-Basic information
Entry | Database: PDB / ID: 1av2 | |||||||||
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Title | Gramicidin A/CsCl complex, active as a dimer | |||||||||
Components | GRAMICIDIN A | |||||||||
Keywords | ANTIBIOTIC / GRAMICIDIN / ANTIFUNGAL / ANTIBACTERIAL / MEMBRANE ION CHANNEL / LINEAR GRAMICIDIN | |||||||||
Function / homology | GRAMICIDIN A / : / METHANOL / : Function and homology information | |||||||||
Biological species | BREVIBACILLUS BREVIS (bacteria) | |||||||||
Method | X-RAY DIFFRACTION / MOLECULAR REPLACEMENT/ ANOMALOUS SCATTERING / Resolution: 1.4 Å | |||||||||
Authors | Burkhart, B.M. / Li, N. / Langs, D.A. / Duax, W.L. | |||||||||
Citation | Journal: Proc.Natl.Acad.Sci.USA / Year: 1998 Title: The Conducting Form of Gramicidin a is a Right-Handed Double-Stranded Double Helix. Authors: Burkhart, B.M. / Li, N. / Langs, D.A. / Pangborn, W.A. / Duax, W.L. | |||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 1av2.cif.gz | 62.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb1av2.ent.gz | 50.6 KB | Display | PDB format |
PDBx/mmJSON format | 1av2.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 1av2_validation.pdf.gz | 442.7 KB | Display | wwPDB validaton report |
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Full document | 1av2_full_validation.pdf.gz | 446.2 KB | Display | |
Data in XML | 1av2_validation.xml.gz | 6.2 KB | Display | |
Data in CIF | 1av2_validation.cif.gz | 7.3 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/av/1av2 ftp://data.pdbj.org/pub/pdb/validation_reports/av/1av2 | HTTPS FTP |
-Related structure data
-Links
-Assembly
Deposited unit |
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1 |
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2 |
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS oper:
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-Components
#1: Protein/peptide | Type: Polypeptide / Class: Antibiotic / Mass: 1882.294 Da / Num. of mol.: 4 / Source method: isolated from a natural source Details: GRAMICIDIN A IS A HEXADECAMERIC HELICAL PEPTIDE WITH ALTERNATING D,L CHARACTERISTICS. THE N-TERM IS FORMYLATED (RESIDUE 0). THE C-TERM IS CAPPED WITH ETHANOLAMINE (RESIDUE 16). Source: (natural) BREVIBACILLUS BREVIS (bacteria) / References: NOR: NOR00243, GRAMICIDIN A #2: Chemical | ChemComp-CS / #3: Chemical | ChemComp-CL / #4: Chemical | ChemComp-MOH / #5: Water | ChemComp-HOH / | Compound details | GRAMICIDIN IS A HETEROGENEOUS MIXTURE OF SEVERAL COMPOUNDS INCLUDING GRAMICIDIN A, B AND C WHICH ...GRAMICIDIN | Has protein modification | Y | |
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-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 1.74 Å3/Da / Density % sol: 30 % | ||||||||||||||||||
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Crystal grow | pH: 7 Details: 30 MG/ML GRAMICIDIN, SATURATED CSCL, METHANOL, PH 7.0, BATCH METHOD | ||||||||||||||||||
Crystal | *PLUS | ||||||||||||||||||
Crystal grow | *PLUS Method: unknown | ||||||||||||||||||
Components of the solutions | *PLUS
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-Data collection
Diffraction | Mean temperature: 295 K |
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Diffraction source | Source: ROTATING ANODE / Type: RIGAKU RUH2R / Wavelength: 1.5418 |
Detector | Type: RIGAKU / Detector: IMAGE PLATE / Date: Oct 15, 1995 / Details: COLLIMATOR |
Radiation | Monochromator: GRAPHITE(002) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 1.4→100 Å / Num. obs: 108451 / % possible obs: 92.4 % / Observed criterion σ(I): 0 / Redundancy: 6.1 % / Rmerge(I) obs: 0.096 / Rsym value: 0.096 / Net I/σ(I): 59 |
Reflection shell | Resolution: 1.4→1.45 Å / Redundancy: 2 % / Rmerge(I) obs: 0.152 / Mean I/σ(I) obs: 2.9 / Rsym value: 0.152 / % possible all: 54.5 |
Reflection | *PLUS Num. obs: 17776 / % possible obs: 91.3 % / Num. measured all: 39976 / Rmerge(I) obs: 0.055 |
-Processing
Software |
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Refinement | Method to determine structure: MOLECULAR REPLACEMENT/ ANOMALOUS SCATTERING Starting model: HOME-MADE MODEL Resolution: 1.4→100 Å / Num. parameters: 5261 / Num. restraintsaints: 6720 / Cross valid method: FREE R / Stereochemistry target values: ENGH AND HUBER Details: METHANOL MOLECULES WERE KEPT ISOTROPIC WITH NO HYDROGENS BECAUSE OF HIGH DISORDER. THE BIJVOET DIFFERENCES WERE USED IN PHASING
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Solvent computation | Solvent model: MOEWS & KRETSINGER (G = 0.83086, U = 1.41203) | |||||||||||||||||||||||||||||||||
Refine analyze | Num. disordered residues: 2 / Occupancy sum hydrogen: 560 / Occupancy sum non hydrogen: 572.47 | |||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.4→100 Å
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Refine LS restraints |
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Software | *PLUS Name: SHELXL-97 / Classification: refinement | |||||||||||||||||||||||||||||||||
Refinement | *PLUS Rfactor obs: 0.154 | |||||||||||||||||||||||||||||||||
Solvent computation | *PLUS | |||||||||||||||||||||||||||||||||
Displacement parameters | *PLUS |