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© Research
Publication : Journal of structural biology

An approach to automated particle picking from electron micrographs based on reduced representation templates.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of structural biology - 25 Oct 2004

Volkmann N,

Link to Pubmed [PMID] – 15065682

J Struct Biol ; 145(1-2): 152-6

Reduced representation templates are used in a real-space pattern matching framework to facilitate automatic particle picking from electron micrographs. The procedure consists of five parts. First, reduced templates are constructed either from models or directly from the data. Second, a real-space pattern matching algorithm is applied using the reduced representations as templates. Third, peaks are selected from the resulting score map using peak-shape characteristics. Fourth, the surviving peaks are tested for distance constraints. Fifth, a correlation-based outlier screening is applied. Test applications to a data set of keyhole limpet hemocyanin particles indicate that the method is robust and reliable.