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. Author manuscript; available in PMC: 2019 Sep 18.
Published in final edited form as: Nat Microbiol. 2019 Mar 18;4(6):1049–1056. doi: 10.1038/s41564-019-0403-z

Figure 3. Intermediate structures during commitment to infection.

Figure 3.

(a, e) An averaged structure of 125 perpendicularly adsorbed virions with the tail needle penetrating the outer membrane; (b, f) an averaged structure from 261 particles without the needle; (c, g) an averaged structure from 521 particles with an extracellular channel (yellow arrow) between the distal end of the baseplate gp10 and the outer membrane; (d, h) an averaged structure from 128 particles with channel extension and membrane cavity (orange arrow). OM: outer membrane, including O antigen; PG: peptidoglycan cell wall. All intermediates were observed in at least three experiments using independent preparations of minicells and phage.