Phytochelatin binds to Pb ions leading to sequestration of Pb ions in plants and thus serves as an important component of the detoxification mechanism in plants. Phytochelatin seems to be transported into the vacuole of plants, so that the metal ions it carries are stored safely away from the proteins of the cytosol. There are groups of other peptides with a similar structure to phytochelatin, but where the last amino acid is not glycine: Phytochelatin was first discovered in 1981 in fission yeast, and was named cadystin. It was then found in higher plants in 1985 and was named phytochelatin. In 1989 the biosynthetic enzyme, phytochelatin synthase, was discovered. Humayun Kabir Dhali  Humayun Kabir Dhali () is a children's book author and journalist in Bangladesh. He has written 85 books. These books are fiction, non-fiction story and novel books. His first book, "Mon Shudu mon Chuyesay", a love story, was published in 1991. "Dusta Cheler Galpo" is also a well-known Kishor novel. He has written more Tomar chokher jall, "Dusta Cheler Galpo", 'Tiye Pakhir Janmadinay', 'Ekatturer Militari Voot', 'Kaker Cha kongkaboti', 'Katush Kutush', Lejkata Bugh o Rajkonna, "Neel Graher Rohossho", "Ek Jay chilo Hunggor", Bilay Nengti, Kalo Murti Rohossho, PitaPutra, Bilai Maw Kata Khow, 'Desh Bdesh er Rupkatha', 'Rupkothar Rupmohol' etc. Have some books edit by him: Begum Rokeya Rachana Samogra, "Sunil Humayun", Maakey Niye Eksho Chara, Pakhir Galpo Pakhir Chara, Sera Kishor Rupkatha, Aloklota etc. His children book "Tiye Pakhir Janmadinay"'s English version "On the Birthday of a Parrot" has been included in the curriculum of Keben primary school, Turkey. His another children book "Cowboy and a Magic Mango Tree" has been included in the curriculum of 9th State primary school of Yannitsa,Municipality of Pella, Greece.