ISDA

Entry Detail

PDB ID:

2M7C

Keywords:

DE NOVO PROTEIN

Title:

Circular Permutation of the Trp-cage: Fold Rescue upon Addition of a Hydrophobic Staple

Biological Source:

Source Organism:

PDB Version:

Deposition Date:

2013-04-18

Release Date:

2013-12-25

Method Details:

Experimental Method:

SOLUTION NMR

Conformers Calculated:

Conformers Submitted:

Selection Criteria:

structures with the lowest energy

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Macromolecular Entities

Polymer Type:polypeptide(L)
Description:Trp-Cage mini-protein
Chain IDs:A
Chain Length:21
Number of Molecules:1
Biological Source:

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
AIB	A	ALA	ALPHA-AMINOISOBUTYRIC ACID

Ligand Molecules

Primary Citation

Circular Permutation of the Trp-cage: Fold Rescue upon Addition of a Hydrophobic Staple.

Byrne, A, Kier, B.L, Williams, D.V, Scian, M, Andersen, N.H.Show

RSC Adv 2013 19824 19829 (2013)

PMID: 24376912 DOI: 10.1039/C3RA43674H

Abstact

The Trp-cage, at 20 residues in length, is generally acknowledged as the smallest fully protein-like folding motif. Linking the termini by a two-residue unit and excising one residue affords circularly permuted sequences that adopt the same structure. This represents the first successful circular permutation of any fold of less than 50-residue length. As was observed for the original topology, a hydrophobic staple near the chain termini is required for enhanced fold stability.

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Primary Citation of related structures