BIOINORGANIC CHEMISTRY A Short Course Second Edition

270 GROUP I AND II METALS IN BIOLOGICAL SYSTEMS: GROUP II

TABLE 6.4 Selected Bond Distances for X

• Ray Crystallographic Structures Discussed in Reference 39 (PDB: 299D, 300D, and 301D) Selected Bond Distances PDB: 299D ( Å ) pH = 6.0

A9 – G10.1

region

Mn

2+

• O

Mn

2+

• N

N

G 7

10.1

• O

1P

A

(^9)
P G
10.1

• O

G 1

10.1

P G

10.1

• O

G 2

10.1

P G

10.1

• O3

′ A

(^9)
P G
10.1

• O5

′

G

10.1

N(271)

a –

O(236) pro - R

(O) p

A

9.0

3.94

P(257) – O(258)

1.49

P(257) – O(259)

1.49

P(257) – O(243)

1.60

P(257) – O(260)

1.60

C17.0 – A1.1

region

P A

1.1

• O

A 1

1.1

P A

1.1

• O

2

A

1.1

• O

P A

1.1

• O3

′ C

17.0

P A

1.1

• O5

′ A

1.1

P(771) – O(772)

1.49

P(771) – O(773)

1.49

P(771) – O(759)

1.60

P(771) – O(774)

1.59

Selected Bond Distances PDB: 300D ( Å ) pH = 5.0

A9 – G10.1

region

Mn

2+

• O

Mn

2+

• N

N

G 7

10.1

• O

1P

A

(^9)
P G
10.1

• O

G 1

10.1

P G

10.1

• O

G 2

10.1

P G

10.1

• O3

′ A

(^9)
P G
10.1

• O5

′

G

10.1

Mn(875) – O(235)

O

1P

A

9.0

2.31

Mn(875) –

N(270) N

7

G

10.1

2.24

N(270) N

7

G

10.1

• O(235)
  O

1P

A

9.0

3.32

P(256) – O(257)

1.50

P(256) – O(258)

1.49

P(256) – O(242)

1.60

P(256) – O(259)

1.59

C17.0 – A1.1

region

Mn

2+

• O

Mn

2+

• N

P A

1.1

• O

A 1

1.1

P A

1.1

• O

2

A

1.1

• O

P A

1.1

• O3

′ C

17.0

P A

1.1

• O5

′ A

1.1

Mn(876) – O(751)

O

P1

C

17.0

7.70

Mn(876) –

N(784) N

7

A

1.1

5.77

P(770) – O(771)

1.49

P(770) – O(772)

1.49

P(770) – O(758)

1.60

P(770) – O(773)

1.58