MOTIVATION Transitive sequence matching expands the scope of sequence comparison by re-running the results of a given query against the databank as a new query. This sometimes results in the initial query sequence (Q) being related to a final match (M) indirectly, through a third, 'intermediate' sequence (Q --> I --> M ). This approach has often been suggested as providing greater sensitivity i...

Based on 3-ary Huffman coding algorithm, we propose a digital mapping method of protein sequence. Firstly, tree is defined by the frequency characteristic 20 amino acids in given sequences. The 0-2 codes constructed can convert long sequences into one-to-one According to and distribution information sequences, design 40-dimensional vectors characterize Next, proposed used perform three separate...