2M89 image
Deposition Date 2013-05-09
Release Date 2013-09-04
Last Version Date 2024-05-01
Entry Detail
PDB ID:
2M89
Title:
Solution structure of the Aha1 dimer from Colwellia psychrerythraea
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Conformers Calculated:
40000
Conformers Submitted:
10
Selection Criteria:
target function
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Aha1 domain protein
Gene (Uniprot):CPS_1688
Chain IDs:A, B
Chain Length:148
Number of Molecules:2
Biological Source:Colwellia psychrerythraea
Ligand Molecules
Primary Citation
A hybrid NMR/SAXS-based approach for discriminating oligomeric protein interfaces using Rosetta.
Proteins 83 309 317 (2015)
PMID: 25388768 DOI: 10.1002/prot.24719

Abstact

Oligomeric proteins are important targets for structure determination in solution. While in most cases the fold of individual subunits can be determined experimentally, or predicted by homology-based methods, protein-protein interfaces are challenging to determine de novo using conventional NMR structure determination protocols. Here we focus on a member of the bet-V1 superfamily, Aha1 from Colwellia psychrerythraea. This family displays a broad range of crystallographic interfaces none of which can be reconciled with the NMR and SAXS data collected for Aha1. Unlike conventional methods relying on a dense network of experimental restraints, the sparse data are used to limit conformational search during optimization of a physically realistic energy function. This work highlights a new approach for studying minor conformational changes due to structural plasticity within a single dimeric interface in solution.

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Primary Citation of related structures