Fig. 2: Structure of stopper protein in crystal and phage 812 particle.
From: Genome anchoring, retention, and release by neck proteins of Staphylococcus phage 812
A–B A hexamer of stopper proteins in the crystal (A) and in the virion (B), shown in cartoon representation. Alternating subunits are shown in color and in gray. C Structural alignment of stopper protein monomers from the crystal (teal) and the virion (magenta). The two positions of the gating loop are indicated with orange asterisks, those of the C-terminus with blue asterisks, and those of the tetra-cysteine loop with a golden asterisk. D A zinc atom (blue sphere) is coordinated between four cysteine side chains in the crystal structure of the tetra-cysteine loop. Distances are reported in angstroms.
