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. 2003 Sep;185(18):5519–5526. doi: 10.1128/JB.185.18.5519-5526.2003

TABLE 3.

Amino acid content in DHFRs from M. profunda, E. coli, and T. maritima

Organism % Amino acid content in DHFR
Σa (%)
D E F G I K L M N P Q R V LVIMF KRED
M. profunda 5.6 8.0 2.5 6.2 6.7 3.1 10.5 3.1 5.6 5.9 3.7 5.6 6.7 29.6 22.3
E. coli 8.8 6.9 3.8 6.3 7.5 4.4 6.9 3.1 3.0 6.3 2.5 5.7 6.9 28.2 25.8
T. maritima 2.9 9.9 9.3 8.1 4.7 7.6 8.7 1.7 3.5 5.2 0.0 7.6 11.6 36.0 28.0
a

Sum of percentages for the cognate residues.