Electronic Resource
Copenhagen
:
International Union of Crystallography (IUCr)
Acta crystallographica
49 (1993), S. 597-600
ISSN:
1399-0047
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
. A low-resolution partial structure of bacterioferritin was solved using a combination of molecular replacement and rigid-body refinement methods. Modification of bacterioferritin crystals by soaking in tetrachloroplatinate results in a phase transition from tetragonal symmetry (space group P42212) to a pseudo-cubic one (approximate space group I432). Helical parts of human H ferritin structure stripped of side chains beyond the Cβ atoms were used as the model. An electron-density map of the refined model revealed a region of extended density which by its shape and position in a pocket between helices was identified as haem. Inclusion of haem in the refinement showed that it can occupy only one of two symmetry-related sites near a twofold axis of the molecule.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0907444993007073
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