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Figure 2 | BMC Bioinformatics

Figure 2

From: Prediction of RNA-binding amino acids from protein and RNA sequences

Figure 2

The structure of a feature vector with the window of 9 amino acids. A window of 9 amino acids corresponds to 7 overlapping triplets: T(i – 3), T(i – 2), …, T(i + 2), T(i + 3). 21 global feature elements (1 L and 20 Cs) and 4 RNA feature elements (R A , R C , R G , R U ) are encoded once for a given pair of protein and RNA sequences. 9 local feature elements (N, H, A, M, P and 4 IPs) are encoded for 7 internal residues, and 5 local feature elements (N, H, A, M, P) for 2 terminal residues. Thus, the feature vector representing a window of 9 residues has a total of 98 (=21+4+9×7+5×2) feature elements.

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