2M89 | pdb_00002m89

Solution structure of the Aha1 dimer from Colwellia psychrerythraea

• PDB DOI: https://doi.org/10.2210/pdb2M89/pdb
• BMRB: 19235

• Classification: Structural Genomics, Unknown Function
• Organism(s): Colwellia psychrerythraea 34H
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-05-09 Released: 2013-09-04 
• Deposition Author(s): Rossi, P., Sgourakis, N.G., Shi, L., Liu, G., Barbieri, C.M., Lee, H., Grant, T.D., Luft, J.R., Xiao, R., Acton, T.B., Montelione, G.T., Snell, E.H., Baker, D., Lange, O.A., Northeast Structural Genomics Consortium (NESG)

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 40000 
• Conformers Submitted: 10 
• Selection Criteria: target function 

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• Method: SOLUTION SCATTERING

Literature

A hybrid NMR/SAXS-based approach for discriminating oligomeric protein interfaces using Rosetta.

Rossi, P., Shi, L., Liu, G., Barbieri, C.M., Lee, H.W., Grant, T.D., Luft, J.R., Xiao, R., Acton, T.B., Snell, E.H., Montelione, G.T., Baker, D., Lange, O.F., Sgourakis, N.G.

(2015) Proteins 83: 309-317

• PubMed: 25388768 
• DOI: https://doi.org/10.1002/prot.24719
• Primary Citation Related Structures: 
  2M89


• PubMed Abstract: 
  

  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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Organizational Affiliation: 
• Department of Molecular Biology and Biochemistry, Center for Advanced Biotechnology and Medicine, and Northeast Structural Genomics Consortium, Rutgers University, Piscataway, New Jersey, 08854.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 33.49 kDa 
• Atom Count: 2,130 
• Modeled Residue Count: 268 
• Deposited Residue Count: 296 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Aha1 domain protein	A, B	148	Colwellia psychrerythraea 34H	Mutation(s): 0  Gene Names: CPS_1688
UniProt
Find proteins for Q484T9 (Colwellia psychrerythraea (strain 34H / ATCC BAA-681)) Explore Q484T9  Go to UniProtKB:  Q484T9

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 40000 
• Conformers Submitted: 10 
• Selection Criteria: target function 

• Method: SOLUTION SCATTERING

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-09-04 
Deposition Author(s): Rossi, P., Sgourakis, N.G., Shi, L., Liu, G., Barbieri, C.M., Lee, H., Grant, T.D., Luft, J.R., Xiao, R., Acton, T.B., Montelione, G.T., Snell, E.H., Baker, D., Lange, O.A., Northeast Structural Genomics Consortium (NESG)

Revision History  

• Version 1.0: 2013-09-04
  Type: Initial release
  
• Version 1.1: 2014-12-10
  Changes: Database references
• Version 1.2: 2015-02-04
  Changes: Database references
• Version 1.3: 2016-04-27
  Changes: Structure summary
• Version 1.4: 2024-05-01
  Changes: Data collection, Database references