Fig 2. Motif logo for the test sequence HM469973 using the PG9 classifier.

For the motif logo the contribution of 5% of the strongest discriminant signals to the classification is considered. The height of the letters depends on the proportional contribution to the classification. Amino acids of the test sequence that influence the classification outcome towards neutralization susceptibility are displayed in capital letters and blue color; lowercase letters and orange color if they contribute to neutralization resistance. For better interpretability, the corresponding positions of the amino acids in the envelope sequence of the HIV strain HXB2 are shown on the x-axis.