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Please rephrase whole paragraph in third person past tense. In this experiment there is report of first crystal structure (at 2.

Please rephrase whole paragraph in third person past tense.


In this experiment there is report of first crystal structure (at 2.37 Å resolution) of Ni(II)HpNikR prepared directly from the holo-protein. The protein contains four nickel ions located in two distinct coordination environments.  Two nickel ions are bound to sites in a four-coordinate square planar geometry as predicted based on the structures of NikR from E. coli and P. horikoshii.  The remaining two nickel ions are bound to sites with unexpected 5 or 6 coordination geometries which were previously thought to be involved in nickel incorporation into the protein. The nickel with 5/6 coordination geometry utilizes three histidines from two separate monomeric HpNikR units along with two or three water molecules as ligands. The spatial location of the nickel in the 5/6 coordinate site is within approximately 5 Å of the expected site if a 4- coordinate square planar geometry occurred.8

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