ISSN:
1399-0047
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
Ocr, the product of gene 0.3 of bacteriophage T7, prevents the action of restriction endonucleases of the host bacteria. The amino-acid sequence of ocr has less than 20% similarity to any protein of known three-dimensional structure. Ocr has been crystallized in a number of different crystal forms and X-ray data for the seleno-L-methionine-substituted form has been collected to a resolution of 1.8 Å. The presence of caesium was found to be required for good crystal growth. Anomalous X-ray data was used to identify possible positions for Se and Cs atoms in the unit cell.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0907444901011623
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