Number of Known Proteins
How many known proteins are there?
According to the article “FastBLAST: Homology Relationships for Millions of Proteins”, published in 2008 on PLoS ONE website, there are 6.23 million known proteins. This number has been constantly growing due to genomic research. Protein research began in 1838, when Gerhardus Johannes Nulder and JÃƒ¶ns Jakob Berzelius described and named proteins for the first time.