Crystallization and preliminary X-ray diffraction analysis of the red fluorescent protein eqFP611


Nienhaus, K., Vallone, B., Renzi, F., Wiedenmann, J. and Nienhaus, G.U. (2003) Crystallization and preliminary X-ray diffraction analysis of the red fluorescent protein eqFP611. Acta Crystallographica D, 59, (7), 1253 -1255. (doi:10.1107/S0907444903008837).

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Description/Abstract

A novel red fluorescent protein, eqFP611, from the sea anemone Entacmaea quadricolor has been cloned in Escherichia coli. With excitation and emission maxima at 559 and 611 nm, this protein shows the most red-shifted emission and the largest Stokes shift of all non-modified proteins in the green fluorescent protein (GFP) family. The protein fluoresces over a wide pH range (4-10) with high quantum yield (0.45). Its photophysical properties make eqFP611 an excellent marker protein for in vivo labeling in eukaryotic systems as was shown by expression in a mammalian cell culture. eqFP611 has been crystallized in space group P6522, with unit-cell parameters a = b = 77.26, c = 329.49 Å. The unit cell contains 12 asymmetric units, with two monomers in each. A molecular-replacement solution has been obtained using the 48.4% homologous red fluorescent protein from Discosoma coral (DsRed).

Item Type: Article
ISSNs: 0907-4449 (print)
Related URLs:
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
ePrint ID: 51217
Date Deposited: 12 May 2008
Last Modified: 27 Mar 2014 18:34
URI: http://eprints.soton.ac.uk/id/eprint/51217

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