Table 5 Results of the quantum-refinement calculations, shown as the RSZD scores for the MPT molecule, Phe136, as well as the Mo and sulfate ions.

From: QM/MM study of the reaction mechanism of sulfite oxidase

RSZD

Phe136 in MM

Phe136 in QM

MPD

MPH

MPO

MPD

MPH

MPT

1.1

1.1

2.5

0.9

1.0

Mo

4.2

4.0

4.1

4.5

4.1

\({{\rm{SO}}}_{4}^{2-}\)

2.9

3.1

3.5

3.7

3.5

Phe136

0.5

0.6

0.5

1.4

0.8

Sum

8.7

8.8

10.6

10.5

9.4

  1. The calculations were performed with or without Phe136 in the QM system.