| Literature DB >> 7120365 |
Abstract
An adaptation of the 'correlation averaging' method is described which allows reliable and almost fully automatic image averaging in the case of near-periodic structures notwithstanding the presence of substantial crystal imperfections; methods for assessing resolution and symmetry without reliance on crystallinity are also discussed. Electron micrographs of negatively stained and rotary shadowed preparations of the HPI-layer protein from the cell envelope of Micrococcus radiodurans have been averaged using the method, and the projected structure is described to a resolution of about 1.9 nm.Entities:
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Year: 1982 PMID： 7120365 DOI： 10.1111/j.1365-2818.1982.tb00405.x
Source DB: PubMed Journal: J Microsc ISSN： 0022-2720 Impact factor: 1.758