PONDR/B-factor plots of matrix proteins of various viruses A) the influenza A M1 protein B) the SIV
P17 protein. C) HIV-1 p17 Matrix protein D) The EIAV p15 Matrix protein. Protein-protein contacts between chains are annotated by thick gray horizontal spots. The normalized B-factor values are seen in the light gray curves. PONDR-VLXT scores are seen in the black curve in each plot.