High Pressure Cryocooling of Capillary Sample Cryoprotection and Diffraction Phasing at Long WavelengthsHigh Pressure Cryocooling of Capillary Sample Cryoprotection and Diffraction Phasing at Long Wavelengths

Structural highlights

2oqn is a 1 chain structure with sequence from Thaumatococcus daniellii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.9Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

THM1_THADA Taste-modifying protein; intensely sweet-tasting. It is 100000 times sweeter than sucrose on a molar basis.

Evolutionary Conservation

 

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Crystal cryocooling is usually employed to reduce radiation damage during X-ray crystallography. Recently, a high-pressure cryocooling method has been developed which results in excellent diffraction-quality crystals without the use of penetrative cryoprotectants. Three new developments of the method are presented here: (i) Xe-He high-pressure cryocooling for Xe SAD phasing, (ii) native sulfur SAD phasing and (iii) successful cryopreservation of crystals in thick-walled capillaries without additional cryoprotectants other than the native mother liquor. These developments may be useful for structural solution of proteins without the need for selenomethionine incorporation and for high-throughput protein crystallography.

High-pressure cryocooling for capillary sample cryoprotection and diffraction phasing at long wavelengths.,Kim CU, Hao Q, Gruner SM Acta Crystallogr D Biol Crystallogr. 2007 May;63(Pt 5):653-9. Epub 2007, Apr 21. PMID:17452791[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. Kim CU, Hao Q, Gruner SM. High-pressure cryocooling for capillary sample cryoprotection and diffraction phasing at long wavelengths. Acta Crystallogr D Biol Crystallogr. 2007 May;63(Pt 5):653-9. Epub 2007, Apr 21. PMID:17452791 doi:10.1107/S0907444907011924

2oqn, resolution 1.90Å

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