Fig. 1. Interactive Figure Legends
Fitting of a B-DNA dodecameric portal assembly shows that the contacts between any one gp20 molecule
and the DNA are confined to three polypeptide loops separated from each other by approximately one DNA helical turn.
These occur at the end of the crown region (inner clip loop),
at the loop
near the amino end of a7 in the stem domain annotation No.5 (inner clip loop),
at the tunnel loop. (inner clip loop),
at the example. (inner clip loop),