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1ovt

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{{STRUCTURE_1ovt| PDB=1ovt | SCENE= }}
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'''REFINED CRYSTALLOGRAPHIC STRUCTURE OF HEN OVOTRANSFERRIN AT 2.4 ANGSTROMS RESOLUTION'''
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===REFINED CRYSTALLOGRAPHIC STRUCTURE OF HEN OVOTRANSFERRIN AT 2.4 ANGSTROMS RESOLUTION===
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==Overview==
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The three-dimensional structure of diferric hen ovotransferrin has been determined by X-ray crystallography at 2.4 A resolution. The structure was solved by molecular replacement, using the coordinates of diferric human lactoferrin as a search model. Several rounds of simulated annealing and restrained least-squares refinement have resulted in a model structure with an R-factor of 0.171 for the data between 11.0 and 2.4 A resolution. The model comprises 5284 protein atoms (residues 5 to 686), 2 Fe3+, 2 CO3(2)- and 132 water molecules. The overall structure of ovotransferrin is similar to those of human lactoferrin and rabbit serum transferrin, being folded into two homologous lobes, each containing two dissimilar domains with one Fe3+ and one CO3(2)- bound at a specific site in each interdomain cleft. However, the relative orientation of the two lobes, which may be related to the class specificity of transferrins to receptors, is different from either human lactoferrin or rabbit serum transferrin. The angle of the relative orientation in ovotransferrin is increased by 6.8 degrees and 15.7 degrees as compared with to those in rabbit serum transferrin and human lactoferrin, respectively. Interdomain Lys209-Lys301 and Gln541-Lys638 interactions are found near the metal binding site of each lobe. The interlobe interactions and their role in the stabilization of iron binding are discussed.
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{{ABSTRACT_PUBMED_7490743}}
==About this Structure==
==About this Structure==
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[[Category: Mikami, B.]]
[[Category: Mikami, B.]]
[[Category: Iron transport protein]]
[[Category: Iron transport protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 07:41:05 2008''

Revision as of 04:41, 29 July 2008

Image:1ovt.png

Template:STRUCTURE 1ovt

REFINED CRYSTALLOGRAPHIC STRUCTURE OF HEN OVOTRANSFERRIN AT 2.4 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 7490743

About this Structure

1OVT is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.

Reference

Crystal structure of diferric hen ovotransferrin at 2.4 A resolution., Kurokawa H, Mikami B, Hirose M, J Mol Biol. 1995 Nov 24;254(2):196-207. PMID:7490743

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