Tips for using PPSP 1.please use 20 letters for common amino acids. 2.both upper and lower cases are acceptable. 3.spaces and returns in sequence are allowable. 4.for fasta format, the first line should begin with '>'. 5.FASTA format is required when mutliple sequences are submitted at one time. Other Phosphorylation Site Prediction Tools & Resources:GPSPhosphoSitePhospho.ELM/PhosphoBaseNetPhosKScanSite