Department of Bioinformatics and Life Science, Bioinformatics and Molecular Design Technology Innovation Center, Soongsil University, Seoul 156-743, South Korea.|Department of Bioinformatics and Life Science, Bioinformatics and Molecular Design Technology Innovation Center, Soongsil University, Seoul 156-743, South Korea.|Department of Bioinformatics and Life Science, Bioinformatics and Molecular Design Technology Innovation Center, Soongsil University, Seoul 156-743, South Korea.