5TWI | pdb_00005twi

Alpha Helix Nucleation by a Simple Cyclic Tetrapeptide

• PDB DOI: https://doi.org/10.2210/pdb5TWI/pdb
• BMRB: 30202

• Classification: DE NOVO PROTEIN
• Organism(s): Cheirogaleus major
• Mutation(s): No 


• Deposited: 2016-11-13 Released: 2016-12-14 
• Deposition Author(s): Hoang, H.N., Fairlie, D.P.
• Funding Organization(s): ARC, MHNRC

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 5 
• Selection Criteria: structures with the lowest energy 

Literature

Alpha Helix Nucleation by a Simple Cyclic Tetrapeptide

Hoang, H.N., Fairlie, D.P.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 0.46 kDa 
• Atom Count: 31 
• Modeled Residue Count: 5 
• Deposited Residue Count: 5 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cyclic tetrapeptide ALA-ARG-ALA-UN1	A	5	Cheirogaleus major	Mutation(s): 0

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
UN1	A	L-PEPTIDE LINKING	C6 H11 N O4		--

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 5 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2016-12-14 
Deposition Author(s): Hoang, H.N., Fairlie, D.P.

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Funding Organization	Location	Grant Number
ARC, MHNRC	Australia	DP1096290, DP130100629, CE140100011

Revision History  

• Version 1.0: 2016-12-14
  Type: Initial release
  
• Version 1.1: 2019-11-06
  Changes: Data collection, Database references, Structure summary
• Version 2.0: 2023-11-15
  Changes: Atomic model, Data collection, Database references, Derived calculations