Sense and nonsense in the genetic code. Three exceptional triplets can serve as both chain-terminating signals and amino acid codons.

Alkaline Phosphatase Amino Acids Bacterial Proteins/biosynthesis Coliphages Escherichia coli Genes Genetic Code Genetics, Microbial Mutation Nucleotides Phenotype RNA, Bacterial/metabolism RNA, Messenger/metabolism RNA, Transfer/analysis Suppression, Genetic

Amino Acids Bacterial Proteins Nucleotides RNA, Bacterial RNA, Messenger RNA, Transfer Alkaline Phosphatase