s-Chlorella Sorokianiana Pentapeptide-1 is a single chain synthetic peptide produced to be identical to the gene which codes for tRNA (Guanine(37)-N1)-Methyltransferase found in Chlorella sorokianiana. The parent protein contains a maximum of 1946 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.