Table 3.

Relative activity of recombination APB-AN towards various amino acid-pNA substrates

Substrate	Relative activity (%)
Arg-pNA	100.5 ± 4.3
Lys-pNA	74.3 ± 2.6
Tyr-pNA	22.1 ± 1.1
Trp-pNA	17.6 ± 0.8
Phe-pNA	14.9 ± 0.4
His-pNA	11.2 ± 0.5
Ala-pNA	9.7 ± 0.3
Met-pNA	7.4 ± 0.2
Leu-pNA	6.5 ± 0.1
Glu-pNA	4.3 ± 0.2
Val-pNA	2.7 ± 0.2
Pro-pNA	1.4 ± 0.1
Ile-pNA	1.1 ± 0.1

Activity is relative to the activity towards Arg-pNA, which is 412.7 U/mg. The results are the means and standard error of three independent experiments