The limited sequence conservation of gp33. The presentation of the sequence alignment follows Figure 2. Amino acid sequences of the T4 and RB14 proteins are identical; RB32 gp33 differs only by E50→K; only the T4 protein is listed. RB43 and RB16 gp33 are identical and only RB43 is listed. A secondary structure prediction from HHpred is shown below the alignment.