1tra

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{{STRUCTURE_1tra| PDB=1tra | SCENE= }}
{{STRUCTURE_1tra| PDB=1tra | SCENE= }}
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'''RESTRAINED REFINEMENT OF THE MONOCLINIC FORM OF YEAST PHENYLALANINE TRANSFER RNA. TEMPERATURE FACTORS AND DYNAMICS, COORDINATED WATERS, AND BASE-PAIR PROPELLER TWIST ANGLES'''
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===RESTRAINED REFINEMENT OF THE MONOCLINIC FORM OF YEAST PHENYLALANINE TRANSFER RNA. TEMPERATURE FACTORS AND DYNAMICS, COORDINATED WATERS, AND BASE-PAIR PROPELLER TWIST ANGLES===
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==Overview==
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The structure of yeast phenylalanine transfer RNA in the monoclinic form has been further refined by using the restrained least-squares method of Hendrickson and Konnert. For the 4019 reflections between 10 and 3 A, with magnitudes at least 3 times their standard deviations, the R factor is 16.8%. The variation of the atomic temperature factors along the sequence indicates that the major flexibility regions are the amino acid and anticodon stems. The two strands of the amino acid helix exhibit large differential temperature factors, suggesting partial uncoiling or melting of the helix. In this work, the occupancy of all atoms was also varied. Residues D16 and D17 of the dihydrouridine loop as well as U33 and G37 of the anticodon loop have occupancies around 70%, indicating some local disorder or large-scale mobility at these positions. One hundred fifteen solvent molecules, including five magnesium ions, were found in difference maps. The role of several water molecules is clearly related to the stabilization of the secondary and tertiary interactions. The gold sites, which were not previously discussed, are described and show an energetically favored binding mode similar to that of cobalt and nickel complexes with nucleotides.
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(as it appears on PubMed at http://www.pubmed.gov), where 3533142 is the PubMed ID number.
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{{ABSTRACT_PUBMED_3533142}}
==About this Structure==
==About this Structure==
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[[Category: Single strand]]
[[Category: Single strand]]
[[Category: T-rna]]
[[Category: T-rna]]
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Revision as of 20:19, 27 July 2008

Image:1tra.png

Template:STRUCTURE 1tra

RESTRAINED REFINEMENT OF THE MONOCLINIC FORM OF YEAST PHENYLALANINE TRANSFER RNA. TEMPERATURE FACTORS AND DYNAMICS, COORDINATED WATERS, AND BASE-PAIR PROPELLER TWIST ANGLES

Template:ABSTRACT PUBMED 3533142

About this Structure

This structure supersedes the now removed PDB entries and 2tna. Full crystallographic information is available from OCA.

Reference

Restrained refinement of the monoclinic form of yeast phenylalanine transfer RNA. Temperature factors and dynamics, coordinated waters, and base-pair propeller twist angles., Westhof E, Sundaralingam M, Biochemistry. 1986 Aug 26;25(17):4868-78. PMID:3533142

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