1dj0: Difference between revisions

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{{STRUCTURE_1dj0|  PDB=1dj0  |  SCENE=  }}  
{{STRUCTURE_1dj0|  PDB=1dj0  |  SCENE=  }}  


'''THE CRYSTAL STRUCTURE OF E. COLI PSEUDOURIDINE SYNTHASE I AT 1.5 ANGSTROM RESOLUTION'''
===THE CRYSTAL STRUCTURE OF E. COLI PSEUDOURIDINE SYNTHASE I AT 1.5 ANGSTROM RESOLUTION===




==Overview==
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Pseudouridine synthases catalyze the isomerization of specific uridines to pseudouridine in a variety of RNAs, yet the basis for recognition of the RNA sites or how they catalyze this reaction is unknown. The crystal structure of pseudouridine synthase I from Escherichia coli, which, for example, modifies positions 38, 39 and/or 40 in tRNA, reveals a dimeric protein that contains two positively charged, RNA-binding clefts along the surface of the protein. Each cleft contains a highly conserved aspartic acid located at its center. The structural domains have a topological similarity to those of other RNA-binding proteins, though the mode of interaction with tRNA appears to be unique. The structure suggests that a dimeric enzyme is required for binding transfer RNA and subsequent pseudouridine formation.
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==About this Structure==
==About this Structure==
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[[Category: Rna-binding motif]]
[[Category: Rna-binding motif]]
[[Category: Rna-modifying enzyme]]
[[Category: Rna-modifying enzyme]]
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