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Table 1 Some interatomic distances (Å).

From: Crystal structures of a purple acid phosphatase, representing different steps of this enzyme's catalytic cycle

Atoms

 

rkbPAP-sulfate

rkbPAP-fluoride

Fe(III)

Zn(II)

3.1

3.5

Fe(III)

OH-

2.1

-

Zn(II)

OH-

2.3

-

Fe(III)

F-

-

2.5

Zn(II)

F-

-

2.1

OH-

SO42- - O1

2.7

-

OH-

SO42- - O3

2.5

-

F-

Na+

-

2.6

Na+

SO42- - O1

-

2.4

Na+

SO42- - O3

-

2.6

His323 C = O

OH

3.1

-

His323 C = O

F-

-

3.6

Asn201 Nδ2

SO42- - O3

3.2

-

His202 Nε2

SO42- - O1

3.0

2.9

His202 Nε2

SO42- - O2

3.1

-

His295 Nε2

SO42- - O4

3.3

-

His296 Nε2

SO42- - O3

2.9

-