ISDA

Entry Detail

PDB ID:

4W76

Keywords:

Title:

Crystal Structure of Full-Length Split GFP Mutant D21H/K26C Disulfide and Metal-Mediated Dimer, P 21 21 21 Space Group, Form 2

Biological Source:

Source Organism:

synthetic construct

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2014-08-21

Release Date:

2015-02-18

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.35 Å

R-Value Free:

0.28

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 21 21 21

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Macromolecular Entities

Polymer Type:polypeptide(L)
Description:fluorescent protein D21H/K26C
Chain IDs:A, B
Chain Length:231
Number of Molecules:2
Biological Source:synthetic construct

Ligand Molecules

Primary Citation

A Suite of Engineered GFP Molecules for Oligomeric Scaffolding.

Leibly, D.J, Arbing, M.A, Pashkov, I, DeVore, N, Waldo, G.S, Terwilliger, T.C, Yeates, T.O.Show

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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