Sequence assembly was performed with program Sequencher (Gene Codes Corp). Protein and DNA homology searches were carried out with tblastn, tblastx, blastp and blastn programs . Multiple sequence alignments were performed with GeneDoc and pairwise sequence alignment . Multiple programs including BCM Search Launcher , ProfileScan , sequence motif search , ExPASy  and 3Dpssm  were used for searching sequence features of known protein. Phylogenetic tree was constructed by Clustalw program (version 1.81) using UPGMA (Unweighted Pair Group Method using Arithmetic averages) algorithm [14].