The symmetrical units of HIV protease are displayed as yellow and red
ribbons. The ribbons are solid in alpha-helices and beta sheets and
are shown as parallel strands in random coil. The Glaxo Wellcome
inhibitor is displayed as a ball & stick 'drieding' model, surrounded
by a Van der Waal's dot surface, both coloured using the chemist's
(CPK) colour scheme.
1995 by Roger Sayle