1b7z: Difference between revisions

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{{Seed}}
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{{STRUCTURE_1b7z|  PDB=1b7z  |  SCENE=  }}  
{{STRUCTURE_1b7z|  PDB=1b7z  |  SCENE=  }}  


'''STRUCTURE OF OXALATE SUBSTITUTED DIFERRIC MARE LACTOFERRIN FROM COLOSTRUM'''
===STRUCTURE OF OXALATE SUBSTITUTED DIFERRIC MARE LACTOFERRIN FROM COLOSTRUM===




==Overview==
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Lactoferrin binds two Fe(3+) and two CO(2-)(3) ions with high affinity. It can also bind other metal ions and anions. In order to determine the perturbations in the environments of the binding sites in the N and C lobes and elsewhere in the protein, the crystal structure of oxalate-substituted diferric mare lactoferrin has been determined at 2.7 A resolution. The final model has a crystallographic R factor of 21.3% for all data in the resolution range 17.0-2.7 A. The substitution of an oxalate anion does not perturb the overall structure of the protein, but produces several significant changes at the metal-binding and anion-binding sites. The binding of the oxalate anion is symmetrical in both the N and C lobes, unlike in diferric dioxalate human lactoferrin, where the oxalate anion binds the metal ion symmetrically in the C lobe and asymmetrically in the N lobe.
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{{ABSTRACT_PUBMED_10531474}}


==About this Structure==
==About this Structure==
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[[Category: Lactoferrin]]
[[Category: Lactoferrin]]
[[Category: Metal binding site]]
[[Category: Metal binding site]]
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