High-resolution X-ray structure of an early intermediate in the bacteriorhodopsin photocycle
Article Abstract:
An early intermediate of the photocyle within wild-type bacteriorhodopsin crystal was trapped at low temperature and its X-ray structure was determined. The experiment indicates that retinal photoisomerization of the retinal to the 13-cis 15-anti configuration could be used as a mechanism whereby retinal isomerization could bring about large movements at the cytoplasmic end of helix F21.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Haem-ligand switching during catalysis in crystals of a nitrogen-cycle enzyme
Article Abstract:
The bifunctional enzyme cytochrome cd is a catalyst in the conversion of nitrite to nitric oxide in denitrification. Use of single-crystal microspectrophotometry shows that the enzyme undergoes a major structural change during catalysis. It is shown that both the d haem iron and the c haem iron undergo re-ligation during the process. Details of the study are presented.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Potential for biomolecular imaging with femtosecond X-ray pulses
Article Abstract:
Computer simulations are used to investigate the information that can be obtained from femtosecond X-ray pulses by individual protein molecules and small assemblies.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
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