Candidate division SR1 and gracilibacteria code


The candidate division SR1 and gracilibacteria code is used in two groups of uncultivated bacteria found in marine and fresh-water environments and in the intestines and oral cavities of mammals among others. The difference to the standard and the bacterial code is that UGA represents an additional glycine codon and does not code for termination.

The code

Bases: adenine, cytosine, guanine and thymine or uracil.
Amino acids: Alanine, Arginine, Asparagine, Aspartic acid, Cysteine, Glutamic acid, Glutamine, Glycine, Histidine, Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Proline, Serine, Threonine, Tryptophan, Tyrosine, and Valine.

Difference from the standard code

DNA codonRNA codonThis code Standard code
TGAUGAGly STOP = Ter

Initiation codons