Figure 1From: Improving protein secondary structure prediction based on short subsequences with local structure similarityA local sequence alignment derived by PSI-BLAST. The identical residues are labelled with letters and conserved substitutions are labelled with + symbols. The alignment in this example shows that the sequence fragment from position 7 to position 46 of the query sequence is very similar to that from position 3 to position 42 in the subject sequence. It is assumed that the two sequences have a similar semantic relation because they form a significant sequence alignment.Back to article page