2i99

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{{STRUCTURE_2i99| PDB=2i99 | SCENE= }}
{{STRUCTURE_2i99| PDB=2i99 | SCENE= }}
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'''Crystal structure of human Mu_crystallin at 2.6 Angstrom'''
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===Crystal structure of human Mu_crystallin at 2.6 Angstrom===
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==Overview==
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Human cytosolic 3,5,3'-triiodo-L-thyronine-binding protein, also called mu-crystallin or CRYM, plays important physiological roles in transporting 3,5,3'-triiodo-L-thyronine (T(3)) into nuclei and regulating thyroid-hormone-related gene expression. The crystal structure of human CRYM's bacterial homolog Pseudomonas putida ornithine cyclodeaminase and Archaeoglobus fulgidus alanine dehydrogenase have been available, but no CRYM structure has been reported. Here, we report the crystal structure of human CRYM bound with NADPH refined to 2.6 A, and there is one dimer in the asymmetric unit. The structure contains two domains: a Rossmann fold-like NADPH-binding domain and a dimerization domain. Different conformations of the loop Arg83-His92 have been observed in two monomers of human CRYM in the same asymmetric unit. The peptide bond of Val89-Pro90 is a trans-configuration in one monomer but a cis-configuration in the other. A detailed comparison of the human mu-crystallin structure with its structurally characterized homologs including the overall comparison and superposition of active sites was conducted. Finally, a putative T(3)-binding site in human CRYM is proposed based on comparison with structural homologs.
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(as it appears on PubMed at http://www.pubmed.gov), where 17242435 is the PubMed ID number.
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{{ABSTRACT_PUBMED_17242435}}
==About this Structure==
==About this Structure==
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[[Category: Mu_crystallin]]
[[Category: Mu_crystallin]]
[[Category: Thyroid hormine binding protein]]
[[Category: Thyroid hormine binding protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 07:13:03 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 23:59:24 2008''

Revision as of 20:59, 28 July 2008

Image:2i99.png

Template:STRUCTURE 2i99

Crystal structure of human Mu_crystallin at 2.6 Angstrom

Template:ABSTRACT PUBMED 17242435

About this Structure

2I99 is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of human micro-crystallin complexed with NADPH., Cheng Z, Sun L, He J, Gong W, Protein Sci. 2007 Feb;16(2):329-35. PMID:17242435

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