I write to introduce new functionality on chemicalize.org

chemicalize.org is a public website for adding chemical resolution to web browsing, chemical names and chemical structure files. The service allows you to browse the web and see structures for chemical names (text) identified in the web page. Read more…

Although more than 250 amino acids have been found in nature but only twenty of these are required for human growth.
These twenty amino acids are classified into two groups: nonessential and essential.
Essential amino acids must be obtained from the diet. These include threonine, leucine, lysine, methionine, valine, isoleucine, tryptophan, and phenylalanine.
One of the amino acids – histidine is called semi-essential because it is necessary for proper growth in children. Read more…