Structure and physico-chemical properties of bacteriophage G. I. Arrangement of protein subunits and contraction process of tail sheath

G. Donelli, F. Guglielmi, L. Paoletti

Research output: Contribution to journalArticle

Abstract

With the help of diffraction and optical image reconstruction we have begun to study the arrangement of the protein subunits in the G bacteriophage of Bacillus megatherium. The arrangement of the structural subunits in the tail sheath was completely defined for both the extended and the contracted states. It is basically the same as that observed for the T-even phages, despite their different general architecture. With regard to the process of contraction of the sheath, an unstable intermediate state was observed. This corresponds to a rearrangement of the chemical bonds between the protein subunits before the complete mechanical contraction of the sheath. The process of contraction itself was studied and a simple model proposed.

Original languageEnglish
JournalJournal of Molecular Biology
Volume71
Issue number2
DOIs
Publication statusPublished - Nov 14 1972

ASJC Scopus subject areas

  • Virology

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