Fig. 1
From: Bacteriophage T5 tail tube structure suggests a trigger mechanism for Siphoviridae DNA ejection
Crystal structure of pb6. a Ribbon representation. Cyan: subdomain 1, blue: subdomain 2, magenta: insertions with respect to all other homologous proteins in subdomain 1 (see Supplementary Fig. 1b), red: linker between the two subdomains, yellow: Ig-like domain, orange: linker between subdomain 2 and the Ig-like domain, grey: TEV cleavage site. N and C: N and C terminus, respectively. b Superimposition of the two pb6 subdomains. c Superimposition of subdomain 1 (cyan) with the inner tube protein of the T6SS of Yersinia pestis (gold, PBD 3V4H). Asterisks point to the departure of the long disordered 28 amino acid loop β3–β4 of pb6 and of the tube protein of Y. pestis T6SS
