“…For instance, GPCRPred (Bhasin & Raghava, 2004 ) based on SVM method for prediction of two levels for GPCRs families and sub-families. On the basis of the dipeptide composition from the primary amino acid sequence, PRED-GPCR (Papasaikas et al, 2004) provides a complement to the existing pattern database analysis servers and potentially a computational tool for GPCR family classification (Zekri et al 2011), GPCRTree is an online hierarchical classifications webserver (Davies et al, 2008). It is the first server to implement an alignment-independent representation of protein sequences and is also the first to classify sequences using a hierarchical classification, PCA-GPCR (Peng et al, 2010), and the most best web service is GPCR-MPredictor (Naveed and Khan 2012) that based on evolutionary approach and predicted GPCR at five level.…”