PDB entry 1ccr - H. Ochi, Y. Hata, N. Tanaka, M. Kakudo, T. Sakurai, S. Aihara, Y. Morita (14-Mar-1983)
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Cruiser Index
Atoms bonded to metal center and bond lengths:
There are 5 nitrogen atoms and 1 sulfur atom bonded to the central iron atom.
The bond lengths are as follows:
Fe 860 and N 194 (on histidine 26): 2.037 A
Fe 860 and N 884 (on heme): 2.033 A
Fe 860 and N 876 (on heme): 1.998 A
Fe 860 and N 892 (on heme): 2.026 A
Fe 860 and N 865 (on heme): 1.964 A
Fe 860 and S 674 (on methionine 88) 2.352 A
The coordination number of Fe is 6.
Here is the article that contained the crystal structure: Ochi, H., Hata, Y.,
Tanaka, N., Kakudo, M., Sakurai, T., Aihara, S., Morita, Y.: Structure of rice
ferricytochrome c at 2.0 A resolution. J Mol Biol 166 pp. 407 (1983)