4W6J image
Entry Detail
PDB ID:
4W6J
Title:
Crystal Structure of Full-Length Split GFP Mutant D117C Disulfide Dimer, P 31 2 1 Space Group
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2014-08-20
Release Date:
2015-02-18
Method Details:
Experimental Method:
Resolution:
1.70 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.19
Space Group:
P 31 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:fluorescent protein D117C
Chain IDs:A, B
Chain Length:236
Number of Molecules:2
Biological Source:synthetic construct
Primary Citation
A Suite of Engineered GFP Molecules for Oligomeric Scaffolding.
Structure 23 1754 1768 (2015)
PMID: 26278175 DOI: 10.1016/j.str.2015.07.008

Abstact

Applications ranging from synthetic biology to protein crystallization could be advanced by facile systems for connecting multiple proteins together in predefined spatial relationships. One approach to this goal is to engineer many distinct assembly forms of a single carrier protein or scaffold, to which other proteins of interest can then be readily attached. In this work we chose GFP as a scaffold and engineered many alternative oligomeric forms, driven by either specific disulfide bond formation or metal ion addition. We generated a wide range of spatial arrangements of GFP subunits from 11 different oligomeric variants, and determined their X-ray structures in a total of 33 distinct crystal forms. Some of the oligomeric GFP variants show geometric polymorphism depending on conditions, while others show considerable geometric rigidity. Potential future applications of this system are discussed.

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