Predicting Interactions between Virus and Host Proteins Using Repeat Patterns and Composition of Amino Acids

Figure 1

Example of computing feature 1 (F1) of amino acid repeats. F1 is the sum of squared length of single amino acid repeats (SARs) in the whole protein sequence. In this example, F1 (repeats of S) = 1² + 3² + 3² = 19, F1 (repeats of W) = 4² + 2² = 20, and F1 (repeats of R) = 1² + 6² = 37.