Berzelius's system remains in use to this day, augmented with three-letter symbols like' Uut' for unnamed elements; and has been extended to describe the aminoacid sequences of proteins and other similar domains.
Berzelius's system remains in use to this day, augmented with three-letter symbols like' Uut'for unnamed elements and' Et' for some common substituents (especially in the field of organic chemistry). This has been further extended to describe the aminoacid sequences of proteins and other similar domains.