4OVA image
Deposition Date 2014-02-21
Release Date 2015-02-25
Last Version Date 2024-11-20
Entry Detail
PDB ID:
4OVA
Title:
Structure of the two tandem Tudor domains and a new identified KH0 domain from human Fragile X Mental Retardation Protein
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.00 Å
R-Value Free:
0.25
R-Value Work:
0.21
R-Value Observed:
0.22
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Fragile X mental retardation protein 1
Gene (Uniprot):FMR1
Chain IDs:A, B, C, D
Chain Length:209
Number of Molecules:4
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
The amino-terminal structure of human fragile X mental retardation protein obtained using precipitant-immobilized imprinted polymers
Nat Commun 6 6634 6634 (2015)
PMID: 25799254 DOI: 10.1038/ncomms7634

Abstact

Flexibility is an intrinsic property of proteins and essential for their biological functions. However, because of structural flexibility, obtaining high-quality crystals of proteins with heterogeneous conformations remain challenging. Here, we show a novel approach to immobilize traditional precipitants onto molecularly imprinted polymers (MIPs) to facilitate protein crystallization, especially for flexible proteins. By applying this method, high-quality crystals of the flexible N-terminus of human fragile X mental retardation protein are obtained, whose absence causes the most common inherited mental retardation. A novel KH domain and an intermolecular disulfide bond are discovered, and several types of dimers are found in solution, thus providing insights into the function of this protein. Furthermore, the precipitant-immobilized MIPs (piMIPs) successfully facilitate flexible protein crystal formation for five model proteins with increased diffraction resolution. This highlights the potential of piMIPs for the crystallization of flexible proteins.

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Primary Citation of related structures