Research Article

Site-Directed Mutagenesis of Myoglobin for Studies of Their Interaction with Iron(III) by Multi-Spectroscopic Techniques

Table 2

The binding constants ( 𝐾 𝑎 ) and relative coefficient ( 𝑅 ) in lineweaver-Burk curve.

Mb and mutants 𝑇 /K 𝐾 𝑎 / L·mol−1

Mb (WT)289 1 . 0 6 × 1 0 4
298 1 . 0 0 × 1 0 4
310 0 . 9 2 6 × 1 0 4

Mb (D44K)289 1 . 3 9 × 1 0 4
298 1 . 2 3 × 1 0 4
310 1 . 1 0 × 1 0 4

Mb (D60K)289 1 . 1 8 × 1 0 4
298 1 . 1 1 × 1 0 4
310 1 . 0 3 × 1 0 4

Mb (K56D)289 1 . 6 7 × 1 0 4
298 1 . 6 1 × 1 0 4
310 1 . 5 6 × 1 0 4