Fig. 1: In situ structure of the dodecameric portal protein gp20 in the bacteriophage T4 virion. | Nature Communications

Fig. 1: In situ structure of the dodecameric portal protein gp20 in the bacteriophage T4 virion.

From: In situ structures of the portal-neck-tail complex of bacteriophage T4 inform a viral genome positioning mechanism

Fig. 1: In situ structure of the dodecameric portal protein gp20 in the bacteriophage T4 virion.The alternative text for this image may have been generated using AI.

a One subunit of the portal protein depicting the crown, wing, stem, and clip domains in red, green, blue, and magenta, respectively. b Cutoff view of the portal vertex. The capsid protein gp23* is colored cyan. The DNA model inside the portal channel is shown in gold. c–h Comparison of the portal structures in the empty capsid10 and in the infectious virion. c, d show side views of the portal dodecamers in the empty capsid and the virion, respectively. e and f show the top views of the portals in the empty capsid and the virion, respectively. g and h show two opposite portal subunits from the empty capsid and the virion, respectively. See Supplementary Movies 1–3 for morphing between the portal structures. See Supplementary Figs. 1–3.

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