Fig. 4
From: Phage spanins: diversity, topological dynamics and gene convergence
Sequence alignments of T4 spanin families. a and b show alignments of i-spanin and o-spanin sequences (periplasmic domains only) of the T4 family respectively. Secondary structure predictions for respective spanins from T4 are shown above each alignment. Grey rectangles indicate alpha helices and black arrows indicate beta sheets. Conservation at different positions is shown below with colors (Red indicates maximum conservation and blue indicates least conservation). A scale indicating the relative position of the residues and the approximate size of various domains is shown above the alignments