Table 1. Summary of heme binding affinity and enzymatic efficacy of the designed peptides ^a .

Peptide	K d μM	k cat/Km × 107 M–1 s–1
1	5.8 ± 0.7	2.84
2	8.9 ± 0.9	2.91
3	2.7 ± 0.5	2.79
4	2.0 ± 0.2	2.44
5	1.6 ± 0.2	1.57
6	0.8 ± 0.2	1.34
7	0.4 ± 0.2	1.15
8	0.5 ± 0.1	4.35
9	28.1 ± 3.2	2.21
10	19.5 ± 2.1	1.30

^a9 and 10 represent peptide-8H6AH12A and peptide-8H15AH21A, respectively.