1SMZ

Structure of Transportan in phospholipid bicellar solution

• PDB DOI: https://doi.org/10.2210/pdb1SMZ/pdb
• BMRB: 6151

• Classification: TRANSPORT PROTEIN
• Mutation(s): No 


• Deposited: 2004-03-10 Released: 2004-03-16 
• Deposition Author(s): Barany-Wallje, E., Andersson, A., Maler, L., Graslund, A.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 60 
• Conformers Submitted: 25 
• Selection Criteria: The submitted conformer models are the 25 structures with the lowest energy 

Literature

NMR solution structure and position of transportan in neutral phospholipid bicelles

Andersson, A.

(2004) FEBS Lett 567: 265-269

• PubMed: 15178334 
• DOI: https://doi.org/10.1016/j.febslet.2004.04.079
• Primary Citation of Related Structures:  
  1SMZ


• PubMed Abstract: 
  

  Transportan is a chimeric cell-penetrating peptide constructed from the peptides galanin and mastoparan, which has the ability to internalize living cells carrying a hydrophilic load. In this study, we have determined the NMR solution structure and investigated the position of transportan in neutral bicelles. The structure revealed a well-defined alpha-helix in the C-terminal mastoparan part of the peptide and a weaker tendency to form an alpha-helix in the N-terminal domain. The position of the peptide in relation to the membrane, as studied by adding paramagnetic probes, shows that the peptide lies parallel to, and in the head-group region of the membrane surface. This result is supported by amide proton secondary chemical shifts.

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Organizational Affiliation: 

Department of Biochemistry and Biophysics, The Arrhenius Laboratories, Stockholm University, S-10691 Stockholm, Sweden.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 2.85 kDa 
• Atom Count: 200 
• Modelled Residue Count: 27 
• Deposited Residue Count: 27 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Transportan in bicellar solution with [DMPC]/[DHPC]=0.33	A	27	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 60 
• Conformers Submitted: 25 
• Selection Criteria: The submitted conformer models are the 25 structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-03-16 
Deposition Author(s): Barany-Wallje, E., Andersson, A., Maler, L., Graslund, A.

Revision History  

• Version 1.0: 2004-03-16
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-03-02
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-05-22
  Changes: Data collection