TABLE 1.

Typical silent mutations observed with MgPa-13 region of M. genitalium clinical strains^a

Amino acid	Codon changeb	No. of strains with mutated codon
L78	CTA (1.26) → CTG (0.43)	26
L90	TTA (5.03) → CTA (1.26)	23
L115	CTC (0.49) → CTT (1.99)	28
N99	AAT (4.61) → AAC (2.89)	30
I100	ATT (5.18) → ATC (1.78)	34
K120	AAA (7.03) → AAG (2.43)	15

^aSeventy-three distinct clinical sequence variants were obtained previously (14, 17, 21) and in this study.

^bPercentage of codon usage (abundance) within M. genitalium reference strain G37 genome is provided in parentheses.